Welcome to the site! Take a minute to register and join us. It's FREE! (and fun)
The ORIGINAL Aztek Fan Club Welcome, Guest. Please login or register.
Did you miss your activation email?
Always stay logged in

Login with username, password and session length
Home Gallery Help Login Register
Pages: [1]   Go Down
  Print  
Author Topic: Unintended acceleration- attempting to push through brakes  (Read 1971 times)
0 Members and 1 Guest are viewing this topic.
slimbobaggins
Noob
*
Offline Offline

Posts: 1


« on: August 25, 2016, 10:58:53 AM »

Hi folks,

This is actually a question about a Buick Rendezvous, but fan support for that model is poor, so I'm hoping someone here might be able to help me.

I've been called to troubleshoot a 2005 Buick Rendezvous that is suffering unintended acceleration.  The family friend reports that sometimes when breaking the engine speeds up, and the car attempts to push through its brakes.  It happens at random, and isn't intentionally repeatable.

Last night, she said that it happened for the first time while cruising.

Internet searching is a dead end for me.  Off the top of my head, I'm thinking TPS, IAC, or throttle body vacuum leak, as culprit.  I'd considered the possibility of a brake booster vacuum leak, but that wouldn't explain accelerating while cruising.

Anyone have any thoughts or suggestions? I can't find any report of this online.  If anything, it's usually the opposite... having trouble accelerating.

Thanks,
Jim
Logged
aztekmarathon
Member
*
Offline Offline

Posts: 3


« Reply #1 on: July 23, 2019, 12:05:36 PM »

I had a similar issue but mine also would not coast to a stop as if the throttle was stuck open. I found the TPS was the problem. Replaced that and a few miles down the road it ran fine.
Logged
aztekmarathon
Member
*
Offline Offline

Posts: 3


« Reply #2 on: July 23, 2019, 12:06:45 PM »

Mine would do this but also it wouldn't shift properly while accelerating. I replaced the TPS and it stopped.
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by SMF 1.1.20 | SMF © 2013, Simple Machines
Theme Underground Yellow