VSC & CEL lights
09-23-11, 12:42 PM
#16
But I would get that code read and chase that down before looking at anything else. Lots of things can make it run poorly.
09-23-11, 03:03 PM
#17
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Idle issues are often the IAC valve" https://www.clublexus.com/forums/rx-...out-yours.html
But I would get that code read and chase that down before looking at anything else. Lots of things can make it run poorly.
But I would get that code read and chase that down before looking at anything else. Lots of things can make it run poorly.
I did get the codes read at both an Autozone store and at an Advance Auto Supply.. Both said it was the up stream A/F sensor.
My question was just could that sensor cause an idle problem.. On a fresh startup (can't have a 'cold start' in Florida with 90 degree temps!!) there are the occassions that the engine will idle very low. leading to several stall outs. After driving for a few minutes, the problem ALWAYS goes away. On a second start up the problem does not occur.
What code will the IAC throw?
Lastly, how do I clear the codes? disconnect the batt??
Again, thanks!
09-23-11, 05:02 PM
#18
The A/F sensor can cause it to idle like crap, but I would think you are probably having issues with the IAC valve. The IAC valve will not really throw a code on it's own, just screw up the idle. I would still replace the A/F sensor before doing anything else though. Just disconnect the battery for a few minutes to clear the code.
09-24-11, 01:01 AM
#19
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The A/F sensor can cause it to idle like crap, but I would think you are probably having issues with the IAC valve. The IAC valve will not really throw a code on it's own, just screw up the idle. I would still replace the A/F sensor before doing anything else though. Just disconnect the battery for a few minutes to clear the code.
09-24-11, 08:43 AM
#20
Carguy- It would always be best if they popsted the DTC #. If it's the heater, that's not likely to cause the idle problems, to say nothing of the fact I don't have a lot of faith in the people pulling the codes. They know what the code reader says, but it takes someone a little more experienced to know when it's throwing a code that isn't actually telling you the problem and you've just thrown hard earned money away. (maybe YOUR money wasn't hard earned, but MINE was!)
Last edited by carguy07; 09-24-11 at 08:48 AM.
09-26-11, 12:43 PM
#21
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HAving read this thread.. I have checked my sensor asnd it is the heater ... No continuity between the blk wires.. all 3 lights are on and an occasional low idle.. Now today, never a problem with idle!! go figure! Where the hell is my old Yugo??
09-26-11, 12:47 PM
#22
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The A/F sensor can cause it to idle like crap, but I would think you are probably having issues with the IAC valve. The IAC valve will not really throw a code on it's own, just screw up the idle. I would still replace the A/F sensor before doing anything else though. Just disconnect the battery for a few minutes to clear the code.
I have a F-150 that has an idle problem..below 1500 rpm it is as rich as Saudi Arabian!.
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