rough idle and almost stalling
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rough idle and almost stalling
got a question for you guys
my car just stalled out a few days ago for no reason, power steering turned off and car just came to a stop
went to the shop, cleaned out the iacv and replaced sparks and wires (spark #3 was cracked, wires were 20 years old), worked again
recently my sc300 has been idling very roughly (2,000 at park...) and dips into the low rpm's while driving and then slingshots back up (kinda like stuttering), very rough idle sometimes when i come to a complete stop almost to the point of shaking
anyone ever have this kinda situation? i'm not so sure on what to do
i was thinking it might be my MAF or throttle body..but...i'm really not too sure
my car just stalled out a few days ago for no reason, power steering turned off and car just came to a stop
went to the shop, cleaned out the iacv and replaced sparks and wires (spark #3 was cracked, wires were 20 years old), worked again
recently my sc300 has been idling very roughly (2,000 at park...) and dips into the low rpm's while driving and then slingshots back up (kinda like stuttering), very rough idle sometimes when i come to a complete stop almost to the point of shaking
anyone ever have this kinda situation? i'm not so sure on what to do
i was thinking it might be my MAF or throttle body..but...i'm really not too sure
#4
been having the same kind of problem with my 92 SC400. mine will idle at 1500 rpm then almost stall out with i press on the gas. a friend of mine said something about the fuel pump fixing to go out. it took forever to crank over last time i started it, and when i did have it in drive, i couldnt get it to move my pressing on the gas. all it would do was creep along just from the rpms at idle. i cant figure it out
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been having the same kind of problem with my 92 SC400. mine will idle at 1500 rpm then almost stall out with i press on the gas. a friend of mine said something about the fuel pump fixing to go out. it took forever to crank over last time i started it, and when i did have it in drive, i couldnt get it to move my pressing on the gas. all it would do was creep along just from the rpms at idle. i cant figure it out
it could be IACV bearing is the problem or fuel ECU
http://planetsoarer.com/IAC/iac.htm
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Thanks guys this info. is great. I haven't checked or noticed the rpm's but I do periodically get the chocking and turning off. Then some days (for days) it's runs perfectly. It has not passed smog due to the timing. Smog guy said it would pass if I could just get adjust timing. Was just told to have timing adjusted to 10 degrees, but best guy could get it was 13 w/out taking more time and getting in there to completely turn it. He also said if he got it to 10, I would lose power and that I do need to have the TPS checked. Don't quite understand, but was also told that maybe Toyota/Lexus may fix/replace TPS for free as this is a recurring problem w/this car. 93 sc300. Think I can find a TPS used, jk yard maybe? With these issues, wondering if car is on last leg..256000miles, not sure how much $ needs to be spent to get it healthy and passing smog. Any thoughts, on cost..will check out/replace sparks today.
#7
it could be IACV bearing is the problem or fuel ECU
http://planetsoarer.com/IAC/iac.htm
http://planetsoarer.com/IAC/iac.htm
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Last edited by LEXZ400; 09-18-11 at 03:56 PM.
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yeah, the IACV should be fine for your car
anyways guys, thanks for the input
i brought it back to the mechanic, they said it was the fuel injectors stuck open, they replaced 2 of them, and now my car is a goner blowing white smoke throughout the neighborhood feeling like a lawnmower
im gonna guess that the old fuel injectors were crap and were clogged so that not much fuel was being pulsated even if they were wide open the whole time but now with new ones, it's a nightmare
so, i'm gonna replace the ecu and tell you guys what happens
anyways guys, thanks for the input
i brought it back to the mechanic, they said it was the fuel injectors stuck open, they replaced 2 of them, and now my car is a goner blowing white smoke throughout the neighborhood feeling like a lawnmower
im gonna guess that the old fuel injectors were crap and were clogged so that not much fuel was being pulsated even if they were wide open the whole time but now with new ones, it's a nightmare
so, i'm gonna replace the ecu and tell you guys what happens
#14
do believe this man might be right on the vacuum leak. been reading stuff on the net and thats what sounds like is happening to our rides. the fun part will be tracking down where exactly the leak is. gonna have to get me some carb cleaner and spray along the intake manifold and a few other spots to find where its coming from. the net also said it could be a bad EGR (or ERG...can remember the correct way it is....been working for about 16 hours today.)