Another irratic idle thread...I'VE TRIED EVERYTHING!!!!
03-05-2003, 03:45 AM
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Another irratic idle thread...I'VE TRIED EVERYTHING!!!!
My idle fluctuates when I hold it between 2K- 3K RPMS. D16Y8 (OBD II), T3, 450cc DSM's, Walbro 255 intank, and VAFC hack- 42, 40, 40, 38, 36, 35, 35. Here's a list of everything I've tried...
2) IAC is good
3) Ignition timing is good
4) Blade in the throttle body is good (cleaned the TB out too)
5) Fuel is good, 35 psi to the rail (lowered it from 40psi thinking it may of been rich, still fluctuating
)
6) Bled the coolant and filled it
7) Couldn't find a vacuum leak
I have a permenant secondary o2 code, no cat, could that be doing it? I know these threads are a dime a dozen. I found a ton when I searched, but I'm about to lose it. PLEASE HELP!!!!! TIA
[Modified by Tony Starks, 4:30 PM 3/6/2003]
2) IAC is good
3) Ignition timing is good
4) Blade in the throttle body is good (cleaned the TB out too)
5) Fuel is good, 35 psi to the rail (lowered it from 40psi thinking it may of been rich, still fluctuating
)6) Bled the coolant and filled it
7) Couldn't find a vacuum leak
I have a permenant secondary o2 code, no cat, could that be doing it? I know these threads are a dime a dozen. I found a ton when I searched, but I'm about to lose it. PLEASE HELP!!!!! TIA
[Modified by Tony Starks, 4:30 PM 3/6/2003]
03-05-2003, 04:09 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (Tony Starks)
to elimnate the seconday o2 code from comming back remove the o2 from the cat and hang it somewhere under the car keep it away from any thing plastic cause the sensor is heated and will melt stuff and then plug up to o2 hole with a junk o2 or a plug please respond with what was the prblem when you fix it 
03-05-2003, 04:10 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (Tony Starks)
does it fluctauate at idle?
i ahd the same problem,turned out to be a wrong TB gasket,h22 throttle body and tried to use a type r gasket.
i ahd the same problem,turned out to be a wrong TB gasket,h22 throttle body and tried to use a type r gasket.
03-05-2003, 04:20 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (Tony Starks)
did you reset the ecu after you made these changes? is your idle set correctly?
03-05-2003, 04:23 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (civictypenos)
does it fluctauate at idle?
i ahd the same problem,turned out to be a wrong TB gasket,h22 throttle body and tried to use a type r gasket.
i ahd the same problem,turned out to be a wrong TB gasket,h22 throttle body and tried to use a type r gasket.
to elimnate the seconday o2 code from comming back remove the o2 from the cat and hang it somewhere under the car keep it away from any thing plastic cause the sensor is heated and will melt stuff and then plug up to o2 hole with a junk o2 or a plug please respond with what was the prblem when you fix it.
03-05-2003, 04:23 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (quis23)
did you reset the ecu after you made these changes? is your idle set correctly?
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03-05-2003, 06:20 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (civictypenos)
Like two weeks ago. It just started doing it. It didn't start right after I installed something. Idled like crap since I put the VAFC in though. Cured the rough idle yesterday by decreasing my fuel pressure to the rail. Too rich.
03-05-2003, 06:22 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (civictypenos)
could it be your ficv (fast idle control valve..) or a bad evap system? check for vacuum leaks in your evap.
03-05-2003, 06:35 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (mugen76)
I'll check the FICV. Dunno where that it is off the top of my head, but my helms will tell me. Someone told me to check under my TB for that "plate with two screws." My TB didn't have one.
03-05-2003, 06:35 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (mugen76)
check for vaccum leaks broke, intake manifold gasket, or anything that plugs up to the intake mani....take some brake cleaner/carb cleaner and spray around to see where the leak is, depending on what you use, the engine will DIE or REV up where the leak is.
03-05-2003, 06:39 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (kwik2nec)
check for vaccum leaks broke, intake manifold gasket, or anything that plugs up to the intake mani....take some brake cleaner/carb cleaner and spray around to see where the leak is, depending on what you use, the engine will DIE or REV up where the leak is.
03-05-2003, 07:35 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (Tony Starks)
Must......get.......more......suggestions......
A very reliable source from H-T told me he lived with this problem the entire time he had his mini-me. Anybody else just living with it? I'm close to giving up too.
A very reliable source from H-T told me he lived with this problem the entire time he had his mini-me. Anybody else just living with it? I'm close to giving up too.
03-05-2003, 08:39 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (mugen76)
could it be your ficv (fast idle control valve..) or a bad evap system? check for vacuum leaks in your evap.
03-05-2003, 08:52 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (autoEXturbo)
herer is an answer to your problem but no way to fix it i have the same one.....
i put a header and cat back on my car with a pipe in there instead of a cat back now mine is doing as you discribe idles really low almost dies or dies everytime. but my car is running rich. a dx has 2 o2 sensors, and ex has 1. The dx has one before cat. and 1 after. you need the dummy o2 sensor..which i have no clue where to get one. or dril a hole and mount the second o2 sensor so both read that will make the check engine light go off and that will also make the car idle strait again...exuast shops can help you out most for free. jsut ask.
i put a header and cat back on my car with a pipe in there instead of a cat back now mine is doing as you discribe idles really low almost dies or dies everytime. but my car is running rich. a dx has 2 o2 sensors, and ex has 1. The dx has one before cat. and 1 after. you need the dummy o2 sensor..which i have no clue where to get one. or dril a hole and mount the second o2 sensor so both read that will make the check engine light go off and that will also make the car idle strait again...exuast shops can help you out most for free. jsut ask.
03-05-2003, 08:56 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (robbieshonda)
i got the same problem!!!!i need help on this but no 1 seem to kno the answer i guess its somewhat normal...does it feel like your car is lobing? as if you had cams in it on idle?
03-05-2003, 08:57 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (romeo619romeo)
i changed the uhhhhh....... **** what's it called. Under the throttle body, that's what i changed and it stopped. Idles fine now.
03-05-2003, 09:01 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (robbieshonda)
herer is an answer to your problem but no way to fix it i have the same one.....
i put a header and cat back on my car with a pipe in there instead of a cat back now mine is doing as you discribe idles really low almost dies or dies everytime. but my car is running rich. a dx has 2 o2 sensors, and ex has 1. The dx has one before cat. and 1 after. you need the dummy o2 sensor..which i have no clue where to get one. or dril a hole and mount the second o2 sensor so both read that will make the check engine light go off and that will also make the car idle strait again...exuast shops can help you out most for free. jsut ask.
i put a header and cat back on my car with a pipe in there instead of a cat back now mine is doing as you discribe idles really low almost dies or dies everytime. but my car is running rich. a dx has 2 o2 sensors, and ex has 1. The dx has one before cat. and 1 after. you need the dummy o2 sensor..which i have no clue where to get one. or dril a hole and mount the second o2 sensor so both read that will make the check engine light go off and that will also make the car idle strait again...exuast shops can help you out most for free. jsut ask.
03-05-2003, 09:03 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (romeo619romeo)
i got one maybe its a vacuum leak in the injector area!
03-06-2003, 04:01 AM
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Re: Another irratic idle thread...I'VE TRIED EVERYTHING!!!! (tominos)
It only fluctuates at idle, it fluctuates about 250 to 500 RPM's inbetween 2K and 3K. Thats it. Thats the only bad spot in the RPM range and only at idle!!!! To answer the post a couple above, yeah it lobs a little bit at idle. Still a little to rich, I think.