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Thread Tools | Display Modes |
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#1
04-19-2008, 09:51 PM
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Car runs very rich after warmed up
when my car gets up to temp, it will slowly start puffing smoke and runs really rich...the smoke definitely smells like raw fuel..once warm, it will continue to smoke..gotta love the burn in your eyes..lol any suggestions? new o2 sensor,injectors,regulator..fp is at 44 line off.. any help is greatly appreciated!
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#2
04-19-2008, 10:58 PM
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Any codes? Do you have a scan tool?
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'86 Gn with an RPE bullet. Almost everything else is from Cottons. 100% street car!
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#3
04-21-2008, 02:40 PM
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If you have a scantool, what are the intake air temp, and the coolant temp readings? I'd say you could have a bad coolant temp. sensor or a broken wire to it. If it goes, your ecm will see it as (I think) -5 deg, and will dump alot of fuel. It won't be as noticeable when the engine is cold, but as it heats up, it will become more noticeable.
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Brian Keep it shiny side up, but show them your dirty side once in a while. 11.3@123mph on 195/75/14" whitewalls. Yes, 195s! 11.2 on the big giant slicks. What's the point? Maybe I'll go back to the whitewalls. They are lighter and have less rolling resistance.
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#4
04-21-2008, 03:02 PM
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If you don't have a scan tool, remove the wheels you just installed. I have a feeling the car doesn't like them and is having a fit. On the serious side---is your SE light flashing? Also, you will want to pick up a new O2 sensor (to install after you solve your problem), as your present one is going to foul if your running as rich as you say.
__________________
'86 Gn with an RPE bullet. Almost everything else is from Cottons. 100% street car!
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#5
04-21-2008, 09:31 PM
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thanks for the replies..i have a scan tool coming tomorrow. i will post my findings...
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#6
04-23-2008, 10:23 PM
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ok..i got a scanmaster 2.1 in the car..this is what im getting:
af-07, l8-45, bat-13.4, int-125, bl-121, mph-0, clt-193, ats-81, r-850, tps-.40, iac-00, cc 247(fluctuates) no malfunction codes.. is the iac bad? Last edited by bnbperformance; 04-23-2008 at 11:29 PM.
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#7
04-24-2008, 02:39 PM
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Glad you edited it. I was going to say replace the battery or alternator before doing anything.
IAC: At 00 that means the computer is telling it to not open...ever. I would say you either have the throttle plate open too much, or you have a vacuum leak somewhere. The IAC is supposed to open a little here and there to adjust your idle. With it not opening at all, the computer has no control over your idle.
__________________
Brian Keep it shiny side up, but show them your dirty side once in a while. 11.3@123mph on 195/75/14" whitewalls. Yes, 195s! 11.2 on the big giant slicks. What's the point? Maybe I'll go back to the whitewalls. They are lighter and have less rolling resistance.
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#8
04-24-2008, 04:52 PM
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i was watching my scanmaster again last night and noticed the af was 07-08 and the iac would build up from 0-8 than go back down to 0...all at idle
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#9
04-24-2008, 06:23 PM
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The ideal reading for IAC would be 20-30. At least that is what I have heard. With it that low, I would try looking for vacuum leaks before trying to adjust it. See if you have any cracked lines, or if you maybe have a leak in the fuel pressure regulator. If that is leaking, you not only will be losing vacuum, you will also be adding fuel. That would make it run real rich.
__________________
Brian Keep it shiny side up, but show them your dirty side once in a while. 11.3@123mph on 195/75/14" whitewalls. Yes, 195s! 11.2 on the big giant slicks. What's the point? Maybe I'll go back to the whitewalls. They are lighter and have less rolling resistance.
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