Runaway 2000 Impala with the 3.4 engine is caused by a flaky Throttle Position Sensor module (TPS). May take up to 3 years before it throws the code. Will do 50 mph uphill with foot off the gas. Replaced the TPS a year ago and has been running well since.
Just thought I'd send along the tip as it was a real stumper for this here shade tree mechanic.
A D V E R T I S E M E N T S
Runaway 2000 Impala with the 3.4 engine is caused by a flaky Throttle Position Sensor module (TPS). May take up to 3 years before it throws the code. Will do 50 mph uphill with foot off the gas. Replaced the TPS a year ago and has been running well since.
Just thought I'd send along the tip as it was a real stumper for this here shade tree mechanic.
- Paul C., Phoenixville, PA, US