#117816, "Troubleshooting P1294" Oct-18-07 10:50 AM by Shadow2877
Hey everyone,
Well its that time of the year again where I must get my car inspected, Ive been driving with it expired for a week or two, and I finally got pulled over for it. The only reason I have not got it inspected yet is because of a check engine that just poped up not to long ago, heres what the Autozone paper reads:
TROUBLESHOOTING P1294 OEM Brand: MITSUBISHI
Definition Idle Air Control Motor Circuit Probable Causes 1.-Open or short circuit condition 2.-Poor electrical connection 3.-Failed IAC Valve
I need to get this taken care of by monday so I dont have to pay the citation for the inspection sticker. Anyone have any ideas on what i should start checking for first? Any pictures or write ups? The car has a CAI on it if that helps.
Thanks, -Cody
--------------------------------------- 1997 Eclipse GS Current Working On: Suspension/Handling
#117817, "RE: Troubleshooting P1294" In response to Reply # 0
usually when I see this code, it is due to things that affect the IAC, but not the IAC itself. Check that the harness isn't damaged (laying on the EGR pipe, for example) and that it's not caused by something external (vacuum leaks causing idle issues). if that fails, reset the ECU and driving it. if the code comes back, try a known-good IAC.
______________________________ If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.
'95 Eclipse TurboGS (garage deco) '95 TSi AWD (restoring a survivor) '97 Talon ESi-T (poor impulse control) '99 Eclipse RS-T (daily beater) '13 Evo X (mostly stock) '17 Sienna (Middle Aged Dad Mobile)
#117818, "RE: Troubleshooting P1294" In response to Reply # 1
Originally posted by DarkOne usually when I see this code, it is due to things that affect the IAC, but not the IAC itself. Check that the harness isn't damaged (laying on the EGR pipe, for example) and that it's not caused by something external (vacuum leaks causing idle issues). if that fails, reset the ECU and driving it. if the code comes back, try a known-good IAC.
Are there any pictures or diagrams to show the IAC and all the componets around it?
--------------------------------------- 1997 Eclipse GS Current Working On: Suspension/Handling
#117819, "RE: Troubleshooting P1294" In response to Reply # 2
Not that I have handy.
______________________________ If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.
'95 Eclipse TurboGS (garage deco) '95 TSi AWD (restoring a survivor) '97 Talon ESi-T (poor impulse control) '99 Eclipse RS-T (daily beater) '13 Evo X (mostly stock) '17 Sienna (Middle Aged Dad Mobile)
#117820, "RE: Troubleshooting P1294" In response to Reply # 3
The IAC sits on the throttle body no real other componets too it. It's on the back of the TB IIRC there are only 2 sensor type hook ups bact there the IAC and the TPS. The TPS sits higher on the back side and I think the IAC is just below. The animal you are looking for has a round body. I hope that helps with the location. After you check the connections if the light comes back after the reset you can also try cleaning the IAC, although if it was dirty you would prolly be seeing bad performance as well as a code. You can search here for the proper cleaning method.
I edited to the wiki!
Originally posted by DR1665 NOTE TO SELF: Go commando to wedding. Scar the Irishman for life.
#117823, "RE: Troubleshooting P1294" In response to Reply # 6
Originally posted by mcgyvr
Originally posted by Nightfall Why not just remove the check engine light bulb from the back of the cluster and get it inspected
Because in most states its not a fail because of the light being on its a fail because they hookup to the ECU and read the codes..
He is correct, I even went so far as to reset the ECU yesterday befor my inspection and the ECU did not have all the numbers on my car and ended up failing because 4 of the sensors could not complete the test. I had a fun 50-60 mile drive allowing my computer to re-calibrate everything. They also have a new fun law in Texas where you still have to pay the 50 bucks if you fail, luckly the guy who attempted to pass mine was cool about it and just told me to drive around a little bit and come back, but still the thought is just scary.
Thanks for your help guys. -Cody
--------------------------------------- 1997 Eclipse GS Current Working On: Suspension/Handling
#117825, "RE: Troubleshooting P1294" In response to Reply # 8 Oct-19-07 11:34 AM by Shadow2877
Originally posted by slowmitsu
Originally posted by Shadow2877 Are there any pictures or diagrams to show the IAC and all the componets around it?
Thank you ^^ I picked one up today because I could not track anything else causing the problem, I will install it tonight and let you all know how it went.
--------------------------------------- 1997 Eclipse GS Current Working On: Suspension/Handling
#125352, "RE: Troubleshooting P1294" In response to Reply # 9
i am having the same issue , i replaced all vac lines , the map sensor, the ml, the iac ! now what i cant figure it out! and i have excellent fuel pressure!
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