Reduced engine power warning & traction control off

[guitarfish]

Well I thought I'd post back on this for an update. The car is still having the same issue with the reduced power. 99% of the time it's happening within the first 5-10 minutes of my morning commute, virtually every day.

I asked the dealership why they replaced the computer. They said because it wasn't responding properly when they connected their diag tool. They said they spent hours messing with it, called GM, and GM advised replacing it. If that was in fact needed, it was a separate issue. When I told them the car is still exhibiting the same behavior, they said they could install a new throttle body for $260 (part) and offered to eat the labor.

gmpartsonline.com sells the TB for $198. I also found one at a reputable online salvage company from a Prix that got totalled with only 4K miles. They want $130 for it, with a lifetime warranty.

So, I'm thinking about going ahead and buying the one for $130 and popping it in. I don't really have any other ideas. The behavior is very odd. Why does it fail once per day, and so close to the same time every day? Very strange.

[jmmay]

Start with your battery, its electrical.. Just had this happen to me. Car would run only for 2 minutes then go into safe mode. Its not giving enough power to the ecu. Replace the battery first, clean the throttle body, new filter etc. Mine had 131,220 miles on it. So far so good.

[guitarfish]

Originally Posted by jmmay

Start with your battery, its electrical.. Just had this happen to me. Car would run only for 2 minutes then go into safe mode. Its not giving enough power to the ecu. Replace the battery first, clean the throttle body, new filter etc. Mine had 131,220 miles on it. So far so good.

Necropost much?

It was the throttle body... 5 yrs & 105,000 miles ago. Still running strong.

[kyky0303]

Hello,
I have ran into this issue where my Grand Prix 08 went in engine running on reduced power, from regular driving. So far Ive had the throttle body changed twice, the accelerator, the computer and the issue is engine is still running on reduced power HELP!!!!! btw I did have my hub barron replaced.

[Tech II]

More often than not, it is not the throttle body.....the problem usually is the wire harness to it....could be a bad connector in the harness onnector or a broken wire in the the harness(insulation intact, but wire could be broken inside it)....