1995 SSE Rough Idle - FIXED!!!
#12
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Another question about the issue... Why would my car try to pulse ahead every time it'* about to die while it'* idling rough? This happens when I'm at a stop with the car in drive. I've been putting it in neutral and giving it gas to keep it goin when I have to.
#13
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What do you mean by 'pulse ahead'? Under some conditions, the ECM will command a higher RPM (maybe 1,000 RPMs or so) while idling, and it will then command the RPMs to drop down to the normal level (roughly 725 RPMs) within a few seconds after that.
#14
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The 1995 PCM will not flash the SES like the OBD 2 cars when there is a Multiple misfire..
But the 95 PCM will display cylinder misfires in data group 2, any sudden slowdown in crankshaft speed will be seen as a misfire by the PCM
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But the 95 PCM will display cylinder misfires in data group 2, any sudden slowdown in crankshaft speed will be seen as a misfire by the PCM
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Originally Posted by billha
What do you mean by 'pulse ahead'? Under some conditions, the ECM will command a higher RPM (maybe 1,000 RPMs or so) while idling, and it will then command the RPMs to drop down to the normal level (roughly 725 RPMs) within a few seconds after that.
Could it be something with the electronics where the misfiring causes something in the trans/torque conv to grab on during one of the misfires?
#16
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Got the coils from Boosty in and it'* still acting up. After some searching I found that bandit had a problem that sounds like what'* going on with my car. Here'* the thread... http://www.bonnevilleclub.com/forum/...f+test&start=0
I should be getting my Auto Xray this week sometime and will get to play around with that some and see if I can find anything. One thing is that the SES light doesn't come on all the time, just randomly. Maybe the EGR test can point me in the right direction.
I should be getting my Auto Xray this week sometime and will get to play around with that some and see if I can find anything. One thing is that the SES light doesn't come on all the time, just randomly. Maybe the EGR test can point me in the right direction.
#17
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I noticed today that I now dont have any kickdown... When I get on the pedal it starts to misfire. I think I'll check the plugs this afternoon just to make sure.
tested my old coils and am just adding this to have the info somewhere...
primary/secondary
Boosty'* coils
1-4 0.7/5.67
2-5 0.7/5.64
3-6 0.7/5.62
my old coils
1-4 0.7/5.63
2-5 0.7/5.51
3-6 0.7/5.81
tested my old coils and am just adding this to have the info somewhere...
primary/secondary
Boosty'* coils
1-4 0.7/5.67
2-5 0.7/5.64
3-6 0.7/5.62
my old coils
1-4 0.7/5.63
2-5 0.7/5.51
3-6 0.7/5.81
#18
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I found while checking the front 3 plugs that there'* some exposed wire just off of one of the fuel injector plugs. Could being exposed mess with something or would it have to be able to short out to something metal for it to cause a problem? Ran out of time to check the back 3.
And for a lil more detail on what'* goin on. I was driving today at around 35-40mph, engine'* sitting at 3000rpm, I give it some gas and the rpms drop to 2500 and it starts missing. Also it decided to throw in a few backfires right after that. A friend of mine said it could be the fuel pump. We tested the fuel pressure not too terribly long ago, may have to do it again.
And for a lil more detail on what'* goin on. I was driving today at around 35-40mph, engine'* sitting at 3000rpm, I give it some gas and the rpms drop to 2500 and it starts missing. Also it decided to throw in a few backfires right after that. A friend of mine said it could be the fuel pump. We tested the fuel pressure not too terribly long ago, may have to do it again.
#19
DINOSAURUS BOOSTUS
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Exposed wires can be an issue. Fix them up and report back.
Also Luke.. you'll want to test the primaries of the coils as well as the towers (or secondaries) that you already tested. Procedure in Techinfo.
Also Luke.. you'll want to test the primaries of the coils as well as the towers (or secondaries) that you already tested. Procedure in Techinfo.
#20
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Originally Posted by BillBoost37
Exposed wires can be an issue. Fix them up and report back.
Also Luke.. you'll want to test the primaries of the coils as well as the towers (or secondaries) that you already tested. Procedure in Techinfo.
Also Luke.. you'll want to test the primaries of the coils as well as the towers (or secondaries) that you already tested. Procedure in Techinfo.
Thanks