starting/idle problems?

Fuzzyneon · Post by **Fuzzyneon** » Wed Nov 21, 2007 12:52 am

okay this is evry frequent now either when i start it it wont start unless i rev to get it going even then somtime rpms jsut drop and it stalls or it dips to 400 rpms and doesnt regain till i rev and sit there for like 10 minutes i thinking my IAC once the idle gets to normals its fine i can drive for hours stop and go never stalls or acts odd jsut getting it started is the pain any ideas guys?

Post by **occasional demons** » Wed Nov 21, 2007 7:49 am

hmm..., not sure if a coolant sensor would cause this w/o setting off a cel. If it was reading normal temp all the time, don't know if the pcm would recognize that. I know the sensor has two seperate wires - one for the gauge and one for the pcm. What I don't know is if both wires run off the same sender. This ia where an A/F gauge would be nice. If the mix was lean @ cold then it would point to improper temp reading. (Or clogged injectors, but that would show in other areas) As far as the IAC, does it oen when you key on? (without crankig the starter) Have some one turn the key on and listen feel the IAC it should make a noise this is the PCM cranking it wide open for starting, once the engine fires it adjust the idle down. If there is no noise then it is prolly stuck. if there was a broken wire or the driver is bad you should get a cel.

hansken_yo · Post by **hansken_yo** » Wed Nov 21, 2007 9:55 am

How cold is it where you are at? If it is cold then you might be needing to make sure that you have proper fluids for the temperature and try doing the recommended start up for cold starts.

Fuzzyneon · Post by **Fuzzyneon** » Wed Nov 21, 2007 11:24 am

Oh its only like 40-50 not even bad yet lol just saying when the engine isnt at warm temps

Fuzzyneon · Post by **Fuzzyneon** » Thu Nov 22, 2007 10:04 pm

60trim · Post by **60trim** » Fri Nov 23, 2007 12:30 pm

I'd start with the IAC and TPS. Check your vacuum lines also. See if you have any leaks anywhere. Start there and let us know what you find.

Fuzzyneon · Post by **Fuzzyneon** » Mon Nov 26, 2007 11:15 pm

what am i looking for on these seonsors?