![]() The idle also seems to resolve itself for a while when the throttle body is removed (like it was for the fuel cleaning and also the plenum gasket). There appears to be at least some correlation with getting gas in my car and the low idle. I've called several mechanics and they flat out refused to even look at the car. The poor acceleration has continued throughout all of this, it never resolved with anything that we did to the car. It is much less frequent than it was but it's still there. After that rough start the car is now idling low in reverse and when I'm stopped in drive. I had actually let go of the key and the ignition continued to turn over and then it started. Today I went to start my car after work and after three attempts it finally started. Today marks the 11th day since the gasket was changed and the 6th day since i last filled up. However it only did it that one time and then not again until today. It idled low immediately after i filled up. So my brother replaced the intake plenum gasket in the throttle body and we thought that had done the trick. They refunded me for the fuel cleaning and told me that they had no idea what was wrong and to take it somewhere else. They checked for a vacuum leak did a fuel pressure test and probably several other things but they couldn't find anything out of the ordinary. After that the low idle returned with a vengeance. They claimed that there was quite a bit of carbon build up in the throttle body and promised that they had fixed it by cleaning out the fuel system. After a couple of weeks I took into the shop. He scanned it and it didn't throw any codes and the check engine light isn't on. We also put new spark plugs and cleaned the corrosion off the battery just in case. My brother is a mechanic so he cleaned the throttle body and the mass airflow sensor thinking that could be the cause of at least the idle issue. When i give it gas its very slow to go and then a few seconds later it realizes I'm trying to go faster and it kicks in all at once. Oh and to top it all off it isn't accelerating like it should. I noticed that it helped it start when i gave it some gas. ![]() It cranks over for a long time and then will eventually start but it is ROUGH. Then it started having trouble starting (intermittently of course so i can't demonstrate for anyone). Eventually it got really bad in reverse, the whole car shook and it actually did stall once or twice. The idle was random at first, not really that bothersome and some days were worse than others. The rpms fluctuate down to 500 or so and the car vibrates pretty bad. I took it on a road trip in march and shortly after I got home I noticed that it was idling very low/rough when I was stopped at stop lights. I have 2009 Pontiac vibe with roughly 130k miles on it. I'm hoping someone can help with the issues my car is having. ![]()
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