Cascade Crew

86toy · Posted: Wed Jan 20, 2010 7:25 pm Post subject: engine light

okay guys this has got me mad,my check engine light wont go out, car was idling high so i replaced iac, also replaced 02 sensor jumped adl and adjusted iac. also took off battery cable, still light is on, did a scan shows no codes just code 12 all clear. car still idles high. could it be the egr is leaking?also no smog pump its frozen up.
thanks shad.

aaron_sK · Posted: Wed Jan 20, 2010 8:22 pm Post subject:

Smog pump wont throw codes. EGR usually doesn't throw codes till you drive around for awhile.

Out of curiosity, if you unhook the battery and wipe the codes, then hook it back up, does the light come on immediately?

86toy · Posted: Wed Jan 20, 2010 8:32 pm Post subject:

yes it does within like 5 seconds its pissing me off lol Evil or Very Mad

aaron_sK · Posted: Wed Jan 20, 2010 8:35 pm Post subject:

Have you jumped the ALDL, or are you using a scan tool?

86toy · Posted: Wed Jan 20, 2010 9:25 pm Post subject:

ive done it all bro, thats what pissing me off damm gm car should have stuck with fords lol
Confused

90droptoproc · Posted: Wed Jan 20, 2010 9:56 pm Post subject:

ya, that sounds better, right now you have a light with no real problems, with the ford you would have lots of problems, and no light Razz

86toy · Posted: Wed Jan 20, 2010 10:45 pm Post subject:

yes i do still have problems read up. idle still to high in nuetral and in drive way to high,light wouldnt be on if there wasnt a problem.i know this from my 30 years of working on cars, i just hate these new pos electronic cars.

aaron_sK · Posted: Thu Jan 21, 2010 7:02 am Post subject:

d00012 · Posted: Thu Jan 21, 2010 7:16 am Post subject:

30 years of experience? POS? Stuck with fords? Why did you buy the car?

Sorry, had to ask. Anywho, yeah, check for vacuum leaks. Adjust the idle screw...no codes? You're using the right scan tool?

Dewey316 · Posted: Thu Jan 21, 2010 7:20 am Post subject:

86toy · Posted: Thu Jan 21, 2010 7:40 am Post subject:

idle= about 800 to 1000 rpm in neutral, in drive about 650 should be 500 cant lower any more. i bought this car because i love transams , was always a ford guy but now in converted Laughing

im gonna pull off upper intake and check egr for leaks and spray around intake for leaks. i adjusted iac valve per instructions in package. also tried adjusting per haynes manual still light is on and NO codes. maybe ill just put a damm carb on it lol.and pull off all emissions, go old school.

Twilightoptics · Posted: Thu Jan 21, 2010 7:51 am Post subject:

Vacuum leak with MAF causes run bad, typically not a high idle.

You need to reset the TPS when you adjust the IAC.

http://www.thirdgen.org/tpimod2

Follow those instructions.

Dewey316 · Posted: Thu Jan 21, 2010 7:54 am Post subject:

Do you have the defrost on? I am pretty sure whenever the AC compressor is running, it clicks the target idle speed up a little.

Since I have a 5-speed car, I don't know your idle targets, my computer calls for 625 rpm w/o AC, and 675rpm with AC. I don't have a in gear target, but those are the idle speeds my car was programed with.

86toy · Posted: Thu Jan 21, 2010 8:21 am Post subject:

twilight ive done them all. including thirdgen instructions, thats why now in thinking its a vaccum leak somewhere, im serously thinking about going to carb setup,im planning ona big cam and gear drive and a set of zz4 or lt1 heads , headers and so on. Very Happy

Al Hasse · Posted: Thu Jan 21, 2010 3:19 pm Post subject:

Don't know about the engine light, but I've had a coolant temp sender cause a high idle without setting a code. My idle at the time was 1000-1500 after the engine was at operating temperature, should have been 800 or so (V6 5-speed).

aaron_sK · Posted: Thu Jan 21, 2010 5:44 pm Post subject:

86toy · Posted: Thu Jan 21, 2010 9:26 pm Post subject:

car runs good no smoke or pinging just high idle and surges a little

aaron_sK · Posted: Thu Jan 21, 2010 9:45 pm Post subject:

Out of curiosity, have you read the plugs? That could eliminate lean/rich or vacuum issues.

86toy · Posted: Thu Jan 21, 2010 9:53 pm Post subject:

hey aaron check your pms, no havent checked plugs it doesnt ping or smoke or run rich it will burn the tires all day long.

aaron_sK · Posted: Thu Jan 21, 2010 10:04 pm Post subject: