Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
145,582 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.

2003 Toyota Tacoma engine problems

engine problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2003 Toyota Tacoma:

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

2003 Toyota Tacoma Owner Comments

problem #3

Aug 152016


  • 200,000 miles


I was driving down the highway experience loss of power such as fuel push the throttle down a couple of times it pick back up happened to more times within 10 mi1nutes it did not throw a code been checking it may relate to a throttle body problem been reading about problems with the throttle body do not want this to happen in heavy traffic or pulling out in front of traffic please let me know what or how to take care of this problem

- Sunrise, FL, USA

problem #2

May 312016


  • 246 miles
I was driving my vehicle 2003 Toyota Tacoma on highway 156 downhill to hollister, ca I was going approx 65 mph and it just jerked back and lost power I was only able to go 40mph no higher, the engine light has not turned on and it seems I am getting no kind of diagnostic error of what could be wrong.

- Hollister, CA, USA

problem #1

May 192014

Tacoma 6-cyl

  • 236,500 miles
Car stumbles/hesitates intermittently at various speeds. Have spent time/money trouble shooting the problem/making repairs with no affect on problem. Problem appears to be drive by wire throttle body Toyota part # 22030-62020 (Toyota data per VIN shows this part should not be on my car). Toyota has a program to replace throttle body if found to be defective (for a limited time) except problem cannot be duplicated in the shop and it does not cause any codes. On-line research indicated problem is with the throttle position sensor (tsp) or the accelerator pedal position sensor (apps) on the throttle body failing. Research indicates Toyota is aware of this problem as they will replace part free if proven defective and apparently has redesigned their throttle body. Issue is, most of the time the dealer cannot reproduce the problem in the shop and since it does not cause a code they will not honor the warranty program because they will not be reimbursed without proving the part is defective. The problem with this throttle body has been identified in vehicles with as little as 30000 miles to over 250000 miles per on-line research. While riding with me the dealer's technician has seen and felt the stumble/hesitation (RPM drops about 150 to 250 RPM when traveling at a constant speed for no reason) but has never been able to duplicate it in the shop or identify the cause. This stumbling/hesitation occurs everytime the car has been driven for longer than 20-30 minutes since the 1st occurrence. Twice it has stumble while making a left turn at an intersection causing me to almost get hit by an on coming vehicle. This throttle body is a non-serviceable part and cannot be repaired, per the dealer it is required to be replaced as a unit. This part needs to be recalled and Toyota required to replace it at no cost now instead of only when it fails before someone is killed.

- Sumter, SC, USA

Not what you are looking for?