TCC solenoid failure possible

Tiny
JEFFREY TATE
  • MEMBER
  • 2005 CHEVROLET AVEO
  • 1.6L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 155,000 MILES
Slight buck/stumble when trying to cruise along at highway speeds. When it's under load or out of overdrive it does not do it. We have changed plugs, cleaned throttle body, and the car is generally very well maintained (it got it's second timing belt at 125,000 and it is at 155,000 now). Injectors all replaced at some point but not recently. No codes stored.
Started going through 'cheap' fixes to try to find the issue. I replaced the TPS and that was not it. We also replaced the MAP sensor and that did not solve the issue. The only other thought I had was the TCC solenoid but I am not sure if the solenoid can even cause this symptom. I would think the only way this stuttering would happen is if the solenoid is 'leaky', but to me it seems like it should be an on or off situation for the valve. Maybe there's buildup inside the TCC solenoid valve? Is that even possible? Thanks in advance!
Do you
have the same problem?
Yes
No
Tuesday, June 25th, 2019 AT 8:50 AM

1 Reply

Tiny
KEN
  • ADMIN
Hello,

Have you run the codes? even if there is not a check engine light on it can still store soft codes which can point us in the right direction. Here is a guide to help us see whats going on:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

It could be the transmission TCC solenoid or the input shaft speed sensor here is the location so you can change it out. Check out the diagrams (below). Please let us know what happens.
Was this
answer
helpful?
Yes
No
Wednesday, June 26th, 2019 AT 11:35 AM

Please login or register to post a reply.

Recommended Guides