B18c1 Revving 500 to 3500 cold start tryed almost everything I think????
05-07-2012, 01:19 PM
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B18c1 Revving 500 to 3500 cold start tryed almost everything I think????
Hey guys looking for some help I bought a 94 del sol with a 97 (obd2) b18b1, it was running a obd2 harness pulgged in a obd1 sub harness ( the one in the car) with was plugged into a obd1 PR4 ecu, motor ran strong but during start up it would rev up and down between 500ish - 3500 rpm for like 5 mins until it warmed up then it would be fine, stay at a normal idle. I have tryed cleaning adjusting replacing the IACV and FICV. No luck....
I had gave up and decided to so a swap, I went with a 94 b18c1, with p72 ECU reused my harnesses ( used my obd2 injectors ) changed the plug for the evap, got a sub harness for rywire for the new vtec plugs and KS and IAB, the problem is still there??????? This is with new IACV and FICV new map, all sensors were changed....... I'm banging my head agains a wall trying to figure this out without changing every part?
Everything I read is about a idle jumping a few hundred rpm.... This is not my case it's literally like from normal idle 900ish to 3500-4000 like a kid just sitting there and pumping the throttle???? I'm so lost and frustrated right now and just looking for some help!!!!
I had gave up and decided to so a swap, I went with a 94 b18c1, with p72 ECU reused my harnesses ( used my obd2 injectors ) changed the plug for the evap, got a sub harness for rywire for the new vtec plugs and KS and IAB, the problem is still there??????? This is with new IACV and FICV new map, all sensors were changed....... I'm banging my head agains a wall trying to figure this out without changing every part?
Everything I read is about a idle jumping a few hundred rpm.... This is not my case it's literally like from normal idle 900ish to 3500-4000 like a kid just sitting there and pumping the throttle???? I'm so lost and frustrated right now and just looking for some help!!!!
05-07-2012, 01:32 PM
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Re: B18c1 Revving 500 to 3500 cold start tryed almost everything I think????
No check engin lights, it turns on when I turn the key forward so I know it's not burnt out or any thing but I have never plugged a diagnostic tool into it ( due to no CEL coming on
05-07-2012, 03:04 PM
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Re: B18c1 Revving 500 to 3500 cold start tryed almost everything I think????
Is there anyone in the Torrance CA area have a OBD1 diagnostic tool willing to make a house call?
05-07-2012, 05:33 PM
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Re: B18c1 Revving 500 to 3500 cold start tryed almost everything I think????
I'm going to need to get a code reader before I can do this, I need to wait till Wednesday for my shift linkage to arrive to take it to a garage. Would that make since seeing how it was 2 diffrent ECUs, well I guess ya it would seeing how it's had the same wiring harness maybe a short in the harness?
Once again anyone got an Honda OBD1 diagnostics reader? In or around Torrance CA? That could help a guy out with a reading?
Once again anyone got an Honda OBD1 diagnostics reader? In or around Torrance CA? That could help a guy out with a reading?
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05-07-2012, 05:44 PM
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Re: B18c1 Revving 500 to 3500 cold start tryed almost everything I think????
Ok ya the small blue clip? As you can tell I'm new to the Honda world, if I do the paper clip trick what should I be looking for what will it do?
05-07-2012, 05:52 PM
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Re: B18c1 Revving 500 to 3500 cold start tryed almost everything I think????
That's a great link thanks but like I had mentioned can this work if I never had a CEL? You said it could be stored?
05-07-2012, 06:10 PM
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Re: B18c1 Revving 500 to 3500 cold start tryed almost everything I think????
Obd0 TB? Don't have one, this issue has happened with 2 diffrent motors, one with an obd1 and the other with an obd2
05-07-2012, 07:41 PM
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Re: B18c1 Revving 500 to 3500 cold start tryed almost everything I think????
No worries man going to try jump the connectors tomorrow, wish me luck I will post any findings or if it's back to the drawing board
05-12-2012, 02:28 PM
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Re: B18c1 Revving 500 to 3500 cold start tryed almost everything I think????
IACV try cleaning it if that doesnt work then you'll need a new one. thats whats known as the honda idle and about 99.9% of the time is caused by your iacv
05-13-2012, 11:58 AM
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Re: B18c1 Revving 500 to 3500 cold start tryed almost everything I think????
Having the same problem here, only.difference is my car is on a s300. During cold startup will.go up to.2000rpms then down to 500. When hot works fine. It was working fine before, will be trying to change the idle speed control and.see what happens.
05-13-2012, 04:56 PM
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Re: B18c1 Revving 500 to 3500 cold start tryed almost everything I think????
Could have something to do with your harness something may not be wired properly. Why not just run an obd1 vtec harness? Would make more sense since your using all obd1 stuff now
