NHTSA — Engine And Engine Cooling Problems


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
50,319 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.

2005 Scion tC engine problems

engine problem

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2005 Scion tC Owner Comments

problem #3

Nov 112010

tC 4-cyl

  • 107,000 miles


Both catalytic converters failed and need replaced. Dealership ( fort bend Toyota ) stated the failure was unusual and premature. Defective equipment for that model/ year / and mileage.

- Rosenberg, TX, USA

problem #2

Jul 032008

tC 4-cyl

  • 43,561 miles
The throttle body stuck open causing it to rev to excessive rpms and then would finally die. This happened while driving at highway speed in 7/08. The throttle body was replaced and then once again it failed, this time sticking closed causing the car to die in an intersection. This was in 3/11 (this year) with only 73K on it total miles ( only 30K on this throttle body). When we received the new part this time, it had been obviously redesigned with a vent allowing corrosion not to occur. This is a real hazard when you have no control over engine speed while driving. With the redesigned part ( a Toyota/Scion part) it is obvious this was a "known" problem, yet no recall was ever issued or received.

- Cypress, TX, USA

problem #1

Apr 132005

tC 4-cyl

  • Automatic transmission
  • 397 miles
The vehicle started shaking uncontrollably and a loud knocking noise had come from the front of the vehicle. The driver was able to control the vehicle, and took it to the dealer. However, the mechanic maintained that the problem could not be duplicated. The vehicle would knock and shake after being started. When driving on the freeway, the vehicle would rattle and felt as if the vehicle could not be controlled due to the shaking of the motor. The mechanic found various problems with the air hose mounts, air cleaning housings and later the motor and engine mounts needed replacement due to weakness. The transmission mounts and the right side engine mount were removed and replaced.

- Norwalk, CA, USA

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