Car starts when cold.When press on accelerator when cold, it tries to cut off. It will idle but surge the whole time. Once warm, it still surges. When driving down the road, it has cut off and then will not start back. did have a p0102 code and so we replaced the MAF sensor. Still same problem. Have done a tune up including spark plugs, fuel filter, and oil change. when car quits running, it sometimes will not start back. when we let the pressure out of the fuel rail, it then starts back and then starts again. Any suggestions?
Get it check out call someone to do it for you
SOURCE: surging while driving
there is a broken or diconected vacuum pipe, you can listen for air leakage with engine running and hood open, push pipes and note difference, goodluck.
SOURCE: 97 bonneville intermitant stalling
leake intake manafold or bad vac line... try warm soapy water on running motor out of a spray bottle to find leak... the reason the censor seemed to hel is that the take time to set them selfs... after set back to square 1 leak in the air side of motor... typical in your car...
SOURCE: 84 Fiero. trouble starting and runs rough and the surges/stalls
It sounds like a fuel pump. Check the fuel pressure. What size engine?
SOURCE: Why is my Grand Prix surging/stalling when ideling?
If you did not disconnect the battery and drain the voltage from the ECM, it could be using old settings when the problem existed.
When a problem occurs, the computer tries to correct it or find new settings to work around the problem. When you fix a problem you have to clear the codes and sometimes erase the memory from the computer to allow it to start back at the factory settings.
When you disconnect something and the check engine light comes on, the computer goes into limp mode and uses values for the sensors preset by the factory. The car will almost always run rich to ensure the driver can get back to a place for repairs.
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