10.0

really awful
Crashes / Fires:
1 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
5,690 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2020 Ram 3500 fuel system problems

fuel system problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2020 Ram 3500:

Unsubscribe any time. We don't sell/share your email.

2020 Ram 3500 Owner Comments (Page 1 of 2)

problem #28

Jan 042023

3500

  • miles

A D V E R T I S E M E N T S

As of today, manufacturer/dealers have failed to comply with repairs based on national recalls. On several appointments, the parts are never received. Manufacturer and dealers are not complying with mandated recalls. Please take action!

- Winter Haven , FL, USA

problem #27

Dec 202022

3500

  • miles
Y78 Recall. The recall for the CP4 pump has been issued. Ive been on the dealership waitlist since the recall became available.My truck began to have rough idling and surging which it never had before. I called the dealer to ask a timeframe for when the recall would be completed, they advised me that they were no longer receiving pumps for the recall and had not received any in a few months. The lady in service advised me if I was that concerned for pump failure to try and source a pump conversion kit myself and submit for reimbursement afterwards (which I did). I submitted copies of receipts from both the retailer I ordered from as well as credit card statements showing proof of purchase which FCA required per their email. However, FCA has denied my request for reimbursement of parts. I have been in communication with them via email trying to get a explanation of why I was denied. They stated that I do not meet criteria for reimbursement even though I have submitted all required documents that they ask for. They are unable to provide explanation aside from their automated generic response saying I do not meet criteria. I have tried calling their provided customer care number to speak to a representative but have been unable to talk to anyone other than an automated system.

- Albuquerque, NM, USA

problem #26

Apr 042022

3500

  • miles
0N 4/4/2022 while traveling on interstate 64 E in WV, towing an R V camper, no warning signals on the dash screen, my truck started losing power and went completely dead, just missed by a tractor trailer rear ending me, as I rolled off to the side of the road. Iwas towed to the nearest Dodge dealership. When I arrived at the dealership a mechanic came and open the hood, he found diesel leaking and a metal rod of the camshaft sitting on top of the engine, which he stated shot through the engine block. Warranty company doesn't want to tear down engine after I gave approval to investigate issue. This is my work truck and source of income. Four weeks later, I am not getting help from dealership that sold me the truck and warranty. Warranty company is trying to use loop hole to get out of paying. I found similar complaints, reported to the NHTSA, engines falling apart while driving down the road. I had to pay for my truck to tow from WV to Charlotte NC to my driveway. I have a case# with the Dodge Customer Care Department and they are just informing me that the truck has recalls, but parts are not avaible at this time.

- Charlotte, NC, USA

problem #25

Mar 032022

3500

  • miles

A D V E R T I S E M E N T S

While towing 5th wheel vehicle check engine light came on I was out of state in arizona vehicl then started to stall I canceled my trip checking all fluids headed back to California as I was nowhere near a dealership made a appointment at ram dealer when I got there light went out I talked with technician he said would have to leave it for 3 weeks before they could look at vehicle needless to say I took it home then in early Feb about 3 weeks after the first incident the check engine light came on again made appointment which was 3 weeks away just to check it in shop and a week before they even looked at the issue they found a cracked hose on inter cooler dealer stated vehicle ok well again on March 4 2022 vehicle again has check engine light on I took to auto store to check code same as before vehicle regeneration frequency it Regenerates ever 100 miles runs poorly uses excessive fuel hesitates when pedal depressed and long cranking time so now I have to be without a vehicle again

- Hesperia, CA, USA

problem #24

Jan 152022

3500

  • miles
DEF reservoir got low and light came on indicating about 300 miles until truck goes into limp mode 5 MPH. Added 1 gallon of DEF and the guage showed to be in the safe zone. The computer system never registered that fluid was added and truck went into limp mode on the way home. When in limp mode you are unable to move vehicle off the roadway in a safe manner or even drive on any roadway without major risk of getting hit. Truck has to be towed to a dealership to have the computer reset. EXTREMELY DANGEROUS. Ironic that first responder and government vehicles with this same engine ect are omitted from the limp mode function due to safety concerns but not the general public.

- Jacksonville, TX, USA

Search CarComplaints.com for these popular complaint phrases...

problem #23

Nov 142021

3500

  • miles
As I was preparing to travel for the holidays comíng up, I was traveling to Texas to see family. I was driving around 65 mph when suddenly the truck started jerking and slowing down when the gas pedal would not give it power. The car behind slammed the brakes and in order to avoid hitting me had to went the the side of the highway. Before coming to a complete stop the truck a 2020 ram 3500 shut off and will not come off. The tow truck was able to scan the truck and the codes are for low fuel pressure and fuel pump. This was a very scary situation because I-€™m with all my family and not only did I put them in danger by this truck failing with out a notice of any kind but also put others like the vehicle behind in danger because the truck failed. I have look up and this seems to be a common issue with all the -€œnew ram trucks-€ not sure why there is no recall yet. Hoping this gets looked at and something can be done for the safety of others

- Las Vegas , NV, USA

problem #22

Nov 122021

3500

  • miles

A D V E R T I S E M E N T S

I was on my way home from the local RAM Dealer last night, where I wanted to sell my truck (after inspecting it, they offered me $82K for it), when, spontaneously, my truck started to smoke from under the hood and literally burst into flames! I had to pull over and jump out to avoid being burned alive! I am so traumatized. I'm attempting to tow what's left of this truck to the dealer this morning. I hope FCA will take responsibility for this!

- North Richland Hills, TX, USA

problem #21

Aug 282020

3500

  • miles
I was driving my truck towing a fifth wheel trailer weighing over 10,000 pounds on a rural state highway in Missouri with many hills, curves, and little to no shoulders. As I was traveling on a downhill slope at approximately 60mph my engine abruptly died with no warning, causing an immediate loss of power steering, power brakes, and engine brake. I began applying heavy pressure to the brakes slowing the vehicle and began looking for a side road to pull into. I came upon a driveway with an open gate into a field. With much manual force to the steering wheel and brakes I was able to guide the truck and trailer off of the highway into the field to a stop. I was fortunate to not have anyone stopping in front of me as I am certain I would not have been able to avoid a crash with the heavy load and no power. The vehicle was towed to a local Ram dealer and metal shavings were discovered in my fuel system. Repairs were made under warranty and after 6 weeks my truck was returned to me with a new fuel system including a new Cp4 fuel pump that had failed. This happened on 08/28/2020 and the truck had 8900 miles at the time. On 09/15/2021 I discovered metal shavings in my rear fuel filter while doing routine maintenance The truck was running appropriately with no codes or warning lights, it had 72000 miles at the time. I telephoned a local Ram dealer shop and was told it would have to be diagnosed at their shop. Unwilling to take the chance with another Cp4 pump failing I contacted a local diesel shop and was advised to replace the Cp4 with a Cp3 pump. I purchased a new Bosch Cp3 fuel pump specifically modified for replacement of Cp4 pumps in Ram trucks and paid the local shop myself to do the work. I still have my second Cp4 pump in my possession.

- Licking , MO, USA

problem #20

Jul 282021

3500

  • miles
Truck was with high pressure pump issues, spent $2600 in rental truck, $400 i. Towing truck and about one month with no truck, Chrysler still doesn't want to pay me back, this is my second truck with same issue, previous truck was a 2019 3500 ram having the same problem when truck was with only 4,000 miles on it. Now they repaired my truck but now i feel like my truck lose already torque, is using more diesel and more DEF.

- Canyon Country, CA, USA

problem #19

Oct 212021

3500

  • miles
I was towing a light trailer (4000 lbs) on I-5 in Oregon on 10/22 when I slowed from ~58 mph to about 45 mph to allow a hasty SUV to merge from the right. When I tried to resume speed the truck seemed "stuck" at 45mph for quite some time. I gave it full throttle and it didn't accelerate. I tapped the brakes, turned off cruise control and it felt like there was no power at all, like it was freewheeling. Finally the motor 'caught' and it accelerated to highway speed. I looked for the problem online and believe this may be related to the CP4 fuel pump issues. Is it safe to continue driving or should I take the truck to a dealer or what? There is no recall yet and I hear the dealership people are telling owners that it is from bad fuel and not covering it! I only have 12128 miles on the truck, please advise!

- North Plains, OR, USA

problem #18

Sep 262021

3500

  • miles

A D V E R T I S E M E N T S

At 28,000 miles my vehicle in the middle of the Highway going up a hill stall and suddenly lose boost or was inoperable to safety get out of the road. i was able to do a unsafe maneuvering to get out of the way with the momentum of speed that i have at the moment When this happened a message on my screen said power boost service require, contact your dealer. Later and after the poor customer service in moreno valley ca. And yuma az my local dealer provide., i found out that my fuel pump(cp4) went down, completely destroyed on the inside sending metal particles trough the entire fuel system. 93,000 and again my vehicle went out of service exactly for the same reason(cp4) And now at 135,000 miles my vehicle is down again the reason is idle pulley broke and my serpentine belt got damage at the same time serpentine belt damage my crank sensor and i found out today that is on back order until the 3th week of november I have all documents in order to support the complaints im here to submit today

- Yuma, AZ, USA

problem #17

Jul 182021

3500

  • miles
CP4 High Pressure Fuel pump failed @17,500 miles. I was pulling an 18,500 LB 5th wheel trailer on a 2- lane state highway. Stranded family for 6 hours in 106 degree heat until multiple tow trucks arrived to move both vehicles. 85 miles to nearest dealer. Most expenses covered by Good Sam Platinum coverage. Replacement parts and service covered by Cummins. 35 gallons of diesel NOT replaced by FCA, 5 days lodging and towing expenses denied by FCA. No warning lights or messages prior to failure. No prior issues. 3 identical trucks delivered same day to Redding, CA dealer. Crown Motors with same issue. Blame placed on Low Sulfur diesel mandated by State of CA.

- Huntington Beach , CA, USA

problem #16

Sep 222021

3500

  • miles
The component that failed was the CP4 high pressure fuel pump. Currently the truck is at RAM dealer in Champaign IL. If I need the part, I can ask for it. When the fuel pump failed, the engine quit running and I lost power steering and brakes. I was not in a high traffic area at the time and was able to get the truck w/42 foot 5th wheel travel trailer to side of highway safely. The issue with the fuel pump has been confirmed by Hendershot Chrysler Dodge Jeep RAM' Has the vehicle component been inspected by manufacturer? UNKNOWN Just prior to the engine shutting off, the following message appeared on the dash, Exhaust Service Required -€" See Dealer Now-€" This message indicates regeneration has been disabled due to a system malfunction.

- Yuma, AZ, USA

problem #15

Aug 082021

3500

  • miles
CP4 fuel injection pump and entire fuel system. The original part was replaced by the dealership under warranty. I am 400 miles away from that dealership and the truck has broke down with another suspected CP4 failure and will need a full fuel system replacement again. I do not know if it would be available for inspection upon request. It put my safety and my passenger-€™s safety at risk as it died while moving on a freeway at night. The problem was confirmed at the first dealership, it is currently pending at the current dealership. The part was inspected at the first dealership that did the warranty work. There were no warning lamps, messages, or other symptoms of the problem prior to the failure. The incident date below, mileage, and invoice is from the FIRST incident. The second incident occurred on 10/18/2021 at approximately 101,300 miles and is currently waiting to be inspected at a dealership.

- Shoreview, MN, USA

problem #14

Aug 262021

3500

  • miles
I was driving on I-44 10 past miami Oklahoma heading East bound and the truck lost all power the Dodge 3500 2020 had 35,000 miles on it had it towed to the Dodge dealer in miami ok they said the high pressure fuel pump exploded

- Apche , OK, USA

problem #13

Nov 112020

3500

  • miles
With 20k miles the High-Pressure Fuel Pump blowup in middle of the freeway in NY. This part name is CP4. My truck subtlety stops in freeway in very dangerous situation. My luck is I had a State Patrol few cars back and he help me to safety the area and wait the tow. My truck stays 2 months parked on at Dealer to fix. The reason is they don-€™t have a new CP4 to replace is because all 2020 diesel Ram trucks had the same problem. 5 months later my CP4 blowup again with 49k miles now my CP4 and my Tank Fuel Pump breakdown in same time. More 2 months to fix.by the way my truck don-€™t had 9 months old and stay parked on dealer for 4 months. I paid 4 months of car payments and insurance for not use the truck. Other point is my braking pads. I replaced my front braking pads and rotors with 29k miles. This is unbelievable all my trucks I replaced this part between 70k and 90k. I paid $900 and I believe that my truck had something wrong with braking system also. Like I explained before. In both situations my CP4 subtlety blowups and stop my truck in middle of freeway. Truck engine shutoff and in 65 mph freeway this is very dangerous. God save my life in both situations because all the tomes someone come to help me. First time was State Patrol the second time is Highway Patrol in CA. Yes the problem happened 2 times and my truck in lees the 1 year stay parked on dealer for 6 months. With breakdowns in CP4, EGR, ECM, Tank Fuel Pump, Turbo Actuator and a lot leaks and gaskets breakdowns. My truck has now 1 year and 2 months old and stay on dealer for next two weeks to replace the Turbo Actuator. Just take a look on google and you guys gonna see a lot complaints. A lot! I don-€™t know. They replaced the component but stills breakdown. Every 3 months my truck stays on dealer for 2 months for fix. Last time I pickup my truck at dealer and next day it breakdown again with a different part problem. Actually my trucks stays with check engine lights on for 8 months.

- Hercules, CA, USA

problem #12

Jun 022021

3500

  • miles
My truck like all 2019-2020 trucks have the plagued CP4 pump that could fail without showing any symptoms. FCA has failed to step up and have ownership and integrity on this issue. I have asked multiple times to RAM Cares and all I have received is cookie cutter answers from them. I do not know if mine will be next to go or ever will go but FCA has a solution in the 2021 HD Ram trucks and that is the CP-ISB21 fuel pump which looks like the old reliable CP3 fuel pump. Companies out have a solution and that is the CP3 swap but it voids the warranty on the vehicle. The warranty is what is holding me back from having the CP3 pump swap done. Can you please pressure FCA to step up have integrity to replace the plagued CP4 fuel pump with the CP-ISB21 pump. I have challenged FCA on their integrity and ask them if they have it because of the cookie cutter answers I have received from them. I have even asked them to look up what integrity is and to follow the integrity example from the Naval Nuclear Power Program because that program is built on integrity. That program has safely steamed on Nuclear Power for over 60 years. Please again force FCA-€™s hand on this because this is unsat of them. Look at the forums online and you will see people posting their trucks that have a failed CP4 pump. With that failure FCA is just replacing it another CP4 pump. Also people-€™s HD rams are down for weeks up to months waiting on the repair. I have also talked to dealership service managers about this issue and they are stumped on why FCA has not issued a recall. Thank you.

- Coronado, CA, USA

problem #11

Feb 222021

3500

  • 61,589 miles
My 2020 Ram 3500 cummins 6.7 lost the injector pump (CP4.2) and I'm told it's about 15K to fix and will take 2 months to fix due to back ordered parts.

- Corinth, ME, USA

problem #10

Feb 052021

3500

  • 3,700 miles
I am one of the many 19-20 hd Ram owners out there that have the plagued Bosch CP4 fuel pump. It is essentially a time bomb waiting for off because when it goes it send metal throughout the fuel system making the vehicle inoperable. That is bad especially those of us that tow heavy. I have asked Ram multiple times on when they plan to help us 19-20 owners out and I keep getting a cookie cutter answer from them that nothing is in the works even though the 2021 model hd Ram have the reliable CP3 fuel pump and it is a direct swap out. Luckily nothing has yet happened to my vehicle but I worry when I drive towing our home around, full time living in an rv, that the fuel pump will grenade itself. When that fuel pump goes about half of the time the dealerships are not honoring the warranty claim because they blame it on bad fuel but how can we control if the fuel we get is bad or good, specifically water in fuel. Owners are being stabbed with a 10K to 20K repair bill to replace the entire fuel system. Please force Ram to issue a recall to replace the CP4 pump with the CP3 pump so that we do not drive around with a plagued fuel pump anymore. Tell them to do their job because you expect me to do mine. I am nuclear propulsion plant operator/supervisor for 20 plus years in the navy and we scrutinize everything to ensure safe and reliable operation of nuclear propulsion plants.

- Coronado, CA, USA

problem #9

Jan 252021

3500

  • 2,600 miles
I bought my truck just over a month ago and was told I had to add lubricant to my fuel in order to keep my fuel pump from blowing up, as well as only put in 'good diesel.' I know diesel can change from one gas station to another, but to add a lubricant in order to keep my fuel pump from blowing up on and brand new $80000 truck! all because of the CP4 that Ram decided to use for two years, then went back to the CP3 in 2021. Thousands of people have having their pumps blow up in the first 10000 miles, being left stranded for months because they have to redo the entire fuel system at a price tag of $17000. I have had surging issues that are making me nervous to the point that I'm willing to take a $10000 loss on my truck and trade it in for a different one. I don't want to be left stranded on the way to work one day because fca doesn't want to recognize they put in a defective part that is cause catastrophic failure and leaving us consumer out of a vehicle for months. This has to change!

- Peyton, CO, USA

Read the next 8 complaints »

Not what you are looking for?