sr20det (redtop) idle problem

[dontdriveitdriftit]

when i turn on the car at frist it wants to turn off then when it get hot it will run but the idle will keep moveing from 800 too 1100 .. i have all ready change the water temp check the coil packs and change the maf , it has 740cc and a jim wolf ecu . when i check it on the computer it said that the o2 sensor was not working to i change it and still runs the same .... if any one knows wat else i can do to slove my problem .....

[kamilp1908]

Maybe IACV needs cleaning? It is responsible for idle.

[venom369]

If its saying the 02 sensor is not working, AND you just replaced it, then check the 02 sensor wiring. It has to be faulty or something.

[dontdriveitdriftit]

ok ill try that .. and venom i did check the wiring and it has power but still nothang

[kingtal0n]

ok ill try that .. and venom i did check the wiring and it has power but still nothang

IF everything is perfect (no air leaks, good maf, good fuel pressure, proper inlet / outlets, good compression, proper timing etc...) I repeat if EVERYTHING is correctly installed and operational....

Your problem is inside the ECU. A "hunting idle" is typical of "off the shelf" tunes. All the more reason to go true-standalone and have a proper tune dialed in.


to help ease this situation, you may want to install a ball valve on the IACV (yes from home depot) that way you can regulate the maximum amount of air that the engine can achieve at idle. This WILL fix your problem, but its just a BANDAID, albeit a semi permanent one.

[dontdriveitdriftit]

ok thanks for the info i will try it ... and post back on it

[dontdriveitdriftit]

the 02 isnt reading i found the problem runs good thanks for all the help