dies when ac turned
Senior User
Joined: Dec 2007
Posts: 199
Likes: 2
i figure when they say disconnect the idle motor they mean the iac. right ?. also now when its cold i have to start it at least 4 times then it will start and idle great. once its warmed up its perfect. could the sensor in the thermostat housing being causing this. when the engine is cold doesn't that sensor send a signal to the computer to tell it where to idle and to richen up the fuel.
Thread Starter
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Elder User
Joined: Mar 2004
Posts: 759
Likes: 1
From: mohave valley, arizona
anyway my problem of dying when ac switched on is gone. the only problem im having now is when i start up when cold, it starts then stumbles then dies and ill start it again and it will stumble, so i hold the throttle down until it will idle smooth. pressure is good and iac is new, tps is new and tune up and timing is on. no vacuum leaks, vacuum is 18hg and when reved it drops then goes back to 18hg. seems this start problem is pretty common, by searching posts at least. also seems there isn't a common fix for it, in fact i don't really see a fix listed anywhere in any post. i guess its a problem needing to be fixed by a shop, trial and error, and maybe it fixes itself. i swore id never buy another fuel injected vech. i have two porsches and they each have fuel injection, each is different, mfi and csi or is it cis, i forget, i sold the csi one but the mfi is a keeper. the csi was pretty simple, cold start valve, thermo time switch, air aux valve, pretty easy going after you figure it out and pretty easy to test, but the elec. fuel, hell what a nightmare, mas, tps, iac, abc, def, and so on and so on.
