Car wants to die when AC is turned on MAX
Car wants to die when AC is turned on MAX Twice so far ive turned my ac on max and the cars idle drops and doesnt want to go anywhere. Just installed and ls6 intake, and im throwing an o2 code for the passanger side.
would that 02 cause the problem?
Its only done it twice and when i turn off the ac the idle returns to normal, and when i turn the ac on max again it wont do it. what the deal?
would that 02 cause the problem?
Its only done it twice and when i turn off the ac the idle returns to normal, and when i turn the ac on max again it wont do it. what the deal?
TECH Regular
Joined: Mar 2007
Posts: 455
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It is common for a vehicle with a defective(IAC)Idle Air Control valve to run rough or die.If the IAC is restricted by Carbon,when you turn the A/C on it puts a load on the engine which is already starving of air,and drops the idle enough to cause it to die.I would check your IAC on your Throttle Body first.There is a good chance...that is the reason you are getting a DTC from the O2 sensor.
12 Second Club
Joined: Jul 2004
Posts: 2,923
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From: Lynnwood, WA
Just a guess but, if unmetered air is some how getting in on that side the a/f ratio it could be causing the ECU to think that the O2 on that side is bad because it's reading such a vastly different a/f ratio than the drivers side? Because it sounds like it could be a vac issue.
I know it's not the same beast but my old 94 Thunderbird SC had the MAF before the supercharger and all the intercooler piping. If there was even the slightest leak in the intercooler piping (which was only amplified by the supercharger) it wouldn't idle at all. So as an example unmetered air on a MAF system can really mess up your idle and make the car not want to run well.
Maybe something isn't completely sealing on the passenger side of the intake manifold? one of the lil rubber oring type seals around the intake port?
I know it's not the same beast but my old 94 Thunderbird SC had the MAF before the supercharger and all the intercooler piping. If there was even the slightest leak in the intercooler piping (which was only amplified by the supercharger) it wouldn't idle at all. So as an example unmetered air on a MAF system can really mess up your idle and make the car not want to run well.
Maybe something isn't completely sealing on the passenger side of the intake manifold? one of the lil rubber oring type seals around the intake port?
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something as simple as a ac that is charged to much. when the charge is to high and the clutch grabs, it will put unwanted strain on the belt causeing the motor to not want to idle so easy.
not saying it is the case but it is worth a 2 second check.
not saying it is the case but it is worth a 2 second check.
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