6.4
fairly significant- Typical Repair Cost:
- $180
- Average Mileage:
- 138,200 miles
- Total Complaints:
- 5 complaints
Most Common Solutions:
- not sure (4 reports)
- new iac valve/clean throttle body (1 reports)
engine problem
Helpful websites
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A D V E R T I S E M E N T S
For the past month or so my 2001 Pontiac Grand Am SE 2.4L, V4, began to lose RPMs while idling (usually dropping from '7' to '5-6') before jumping back up to the normal idle rate. The real issue however would come when making a turn while also pushing down on the brake, when I would lose all power at times, including power steering and brakes. Luckily, this only happened to me on residential streets with no traffic so I was able to coast to a stop and throw the car into park and then turn it off. After turning the car off, I would able to restart it right away with no issues and go on my way.
After reading some reviews/possible fixes I went ahead and took off the intake manifold and changed the IAC valve and cleaned the throttle body valve. I also poured in a fuel system cleaner just for good measure. After buying the new IAC valve, throttle cleaner, and fuel system cleaner, it came out to be around $100 for parts and with the driving around to get the parts, to be about 3-4 hours of work under the hood (did the repairs with my Dad in the garage). I've been driving around since we did the repairs and the rough idling seems to have been fixed and I have not lost power while decelerating (and I've been running it really trying to get it to repeat the power failure/rough idle). I'll update if anything changes, but it looks like this did the trick!
Update from May 26, 2016: After a few days, I lost power again while turning in a residential area and again shortly after on a heavy traffic stretch of road (stop and go). I finally caved in and took it into the shop. The reason for the losing power was a bad hose going into the intake manifold that was not sending the right amount of air, causing the engine to stall out. It's been about 3 weeks now since the hose was replaced and I have not lost power since. Every now and again I will have a rumble while idling, but it's not nearly as severe as it was previously.
- Ryan D., Omaha, NE, US