Rough Start on Cold Days

[hans911]

Hi guys need your help here, this is the issue.

2005 corolla 1.8L, When it gets cold out side it starts but the rpms start jumping to 2500 and to 500 and back to 2500, and so on, the car shakes, and i feel a miss fire on 1 or 2 cylinders !!!

Once i press GAS PEDAL that all goes away and when i let go of the gas pedal same thing again. Then eventually after 5 to 10 min of driving it goes away.

Check engine came on we scanned it and showed miss fire on 1 and 2 so we changed spark plugs! It was fine fro 2 days but it was Zero degrees outside so car started fine. As it got cold again same thing started happening again and we scanned the check engine and show that its running to rich!!

Has any one had this issue, i dont knw weather to replace the o2 sensor or cold it be a coil pack or coolant temp sensor, i just dont know anymore.

PLEASE HELP
Hans

[tarbasd]

Typical symptoms of a manifold gasket leak. Do a search: it is a common problem.

[hans911]

Thanks so much i cleaned the MAF sensor today and the manifold is next if the problem occurs again.

Thanks