stuck and need help with idle problem
#1
stuck and need help with idle problem
codes: p1298- manfacurer control. fuel air metering
p0141: o2 sensor heater circuit malfunction. bank 1 sensor 2
p0135: o2 sensor heater circuit malfunction. bank 1 sensor 1
idles bounces between 1500rpm and 2800rpm. searched for a vacuum leak and couldnt find anything. even put a fog machine and still nothing.
now i searched and got similar results. first code didnt exactly show up but the description was the same. and others also had the two other codes come with the first code. majority of the time ppl said to clean the iac. and i did but still didnt help. (maybe the thing too a crap and i need a new one?)
anyone got any other ideas? this happened a few days ago when the weather went from 20deg to 40deg. before all this it drove fine and with out a problem. then after work i get this idle problem out of no where.
p0141: o2 sensor heater circuit malfunction. bank 1 sensor 2
p0135: o2 sensor heater circuit malfunction. bank 1 sensor 1
idles bounces between 1500rpm and 2800rpm. searched for a vacuum leak and couldnt find anything. even put a fog machine and still nothing.
now i searched and got similar results. first code didnt exactly show up but the description was the same. and others also had the two other codes come with the first code. majority of the time ppl said to clean the iac. and i did but still didnt help. (maybe the thing too a crap and i need a new one?)
anyone got any other ideas? this happened a few days ago when the weather went from 20deg to 40deg. before all this it drove fine and with out a problem. then after work i get this idle problem out of no where.
#2
Chapter Leader (Southeast Region)
I had a problem with IACV and swapped one from another throttle body and cleaned but still had the problem. Thought for sure I had a vacuum leak but couldn't find one. Got a new one and the problem went away
#4
3.5 psi
iTrader: (1)
i had that problem after doing my valve adj. and it was the iac gunked up. Cleaned it really well with carb cleaner.
Try plugging the IACV with your finger, if the revs stabilize then it's the valve.
Try plugging the IACV with your finger, if the revs stabilize then it's the valve.
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#9
3.5 psi
iTrader: (1)
so sounds likely to be a vac leak. Spray carb cleaner around gaskets (intake manifold, throttle body etc.) while the engine is running. where the rev's stabilize is your leak.
Did you do any engine work recently?
Did you do any engine work recently?
#12
Chapter Leader (Southeast Region)
try spraying carb cleaner to see if you have a vacuum leak. Also I swapped a couple of different iacv figuring more than one couldn't be bad but I was wrong. Try the carb cleaner first.
#13
lowrd on tein CS biatch
iTrader: (2)
Don't clean the iac before trying it. I have tried the whole cleaning iacv before and it led to problems half the time..so. Don't do it unless u have to. Are you sure you did not mess up and connect sensors in the wrong spot... Cause it can happen there around the throttle body areaish... I Dont kno when this problem occurred but if you had to put a bunch of connectors back on I think it may be s simple as that. Try it out...
My guess is its something uve overlooked and I doubt u thought you may have swapped connectors
My guess is its something uve overlooked and I doubt u thought you may have swapped connectors
#17
lowrd on tein CS biatch
iTrader: (2)
so my guess is ur looking at a bad temp reading?? therefore u need to replace the intake temp sensor (s). I would do an ohm check on everything related to idle and intake.. that should let u know if a sensor is causing the problem or if u gotta look elsewhere
i feel for you pal.. and i wish u all the best.
i feel for you pal.. and i wish u all the best.
#18
dont think its the temp sensor. started the car today ( 36deg outside) and it was idleing at 1400rpm then once it was warmed up it started bouncing around again. sprayed carb cleaner around the tb, vacuum hoses, im runners, im gaskets and no change. another code did pop up.
p0505- idle control system malfunction. everything is hooked up.
p0505- idle control system malfunction. everything is hooked up.
#19
Chapter Leader (Southeast Region)
I still think its the IACV i had the same exact problem and couldn't get it to go away after trying for a few weeks I got a new IACV and the problem went away. I would also check and make sure you don't have a crack in your runners
#21
AM To WDP In My Garage
iTrader: (40)
I just cleaned mine not to long ago now its working just fine. Make sure you do a really good job at cleaning it and make sure the magnet knob turns freely. Also clean the surface where it makes contact with the gasket.
Here's a little fake video after I cleaned mine.
It looks like I was having to much fun with it lol.
Here's a little fake video after I cleaned mine.
It looks like I was having to much fun with it lol.
Last edited by acura_dipset_tl; 03-13-2013 at 12:30 AM.
#25
Chapter Leader (Southeast Region)
Did you try a new one? other than the IACV the only thing I can think it would be is a vacuum leak but you already tried spraying carb cleaner to see if that worked.
#30
put in the new iac and cars runs good. a bit rich but idles and drives good. but i still have the first 3 codes that i had before (i cleared the codes and unplugged the battery prior to replacing the iac).
now, i did take off the sensor that the motor mounts are hooded up to and then the other vacuum line goes to the IM. not sure what thats called but would it throw the codes: p1298, p0141 , p0135? i did cap off the port on the IM.
now, i did take off the sensor that the motor mounts are hooded up to and then the other vacuum line goes to the IM. not sure what thats called but would it throw the codes: p1298, p0141 , p0135? i did cap off the port on the IM.
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