Idleing problems
Thread Starter
Racer
Joined: May 2009
Posts: 364
Likes: 3
From: merced ca
Idleing problems
ok well not exactly idling problem but almost. I recently put a super ram on the 89 a few months ago. Pretty much got it tuned but I have a couple issues. So if I try to tap the gas let’s say trying to back out of the driveway or parking spot right after I let go of the gas and car starts slowing down it dies or tries to die. It does this going forward or reverse. And just recently when I was playing car shuffle at home. I started it up turned on my headlights and it wanted to die. What I’ve done so far. I’ve already replaced the battery and put on a power master alternator. I replaced the iac with an ACDelco unit. I read something about fuel pump voltage and it seemed low on tuner pro. So I checked some wires and repaired by fuel tank and replaced the fuel pump relay. I’m still looking at doing some stuff like fixing the ecm wire at the battery it looks kinda crappy. The problem seems to happen when the car is warmed up so must be doing it in closed loop. Not sure what else to look at. Other than that the car runs good and has power. Any ideas from any other super ram users?
Team Owner
Joined: Jul 2004
Posts: 28,378
Likes: 3,261
From: Hartford WI
Why exactly did you replace the IAC? What was it doing? What do you mean "pretty much got it tuned"? Was an idle speed change needed for the SR? Have you checked fuel pressure, spark and IAC counts?
Thread Starter
Racer
Joined: May 2009
Posts: 364
Likes: 3
From: merced ca
I replaced the iac because of the problems I was having. As far as the idle speed I did have a higher idle speed but it also would cut out on me with the higher idle speed. I put it back to stock. I started off with a stock ARAP tune and got my blm’s pretty darn close. 122-130 range. Funny thing is when I first got it running with the super ram I really did not have have any problems with it cutting out. It just started happening suddenly. Really discouraging makes me not want to drive it. Does the ecm need to learn the idle position? I also have an ostrich 2.0 hooked up. Would that cause any weird problems?
Team Owner
Joined: Jul 2004
Posts: 28,378
Likes: 3,261
From: Hartford WI
I replaced the iac because of the problems I was having. As far as the idle speed I did have a higher idle speed but it also would cut out on me with the higher idle speed. I put it back to stock. I started off with a stock ARAP tune and got my blm’s pretty darn close. 122-130 range. Funny thing is when I first got it running with the super ram I really did not have have any problems with it cutting out. It just started happening suddenly. Really discouraging makes me not want to drive it. Does the ecm need to learn the idle position? I also have an ostrich 2.0 hooked up. Would that cause any weird problems?
Thread Starter
Racer
Joined: May 2009
Posts: 364
Likes: 3
From: merced ca
Ok so I looked at the last log I did and the iac position got as low as 13. Definitely not in the 20 -30 range. I’ll try and hook up the laptop tomorrow and see if it says different. I probably check my fuel presssure too.
Team Owner
Joined: Jul 2004
Posts: 28,378
Likes: 3,261
From: Hartford WI
Was everything but the motor off? If so, try opening it up by turning the screw in, red and recheck
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Thread Starter
Racer
Joined: May 2009
Posts: 364
Likes: 3
From: merced ca
Thread Starter
Racer
Joined: May 2009
Posts: 364
Likes: 3
From: merced ca
Ok so my iac position was way low. I adjusted the throttle so now it’s between 20-30 and readjusted the tps. I checked my fuel pressure. Just shy of 44psi with vacuum unplugged. Once I get to drive it I guess I’ll see how it does.
Last edited by kitttransam; Nov 15, 2018 at 05:51 PM.
Thread Starter
Racer
Joined: May 2009
Posts: 364
Likes: 3
From: merced ca
Well I’m out of town now. But this thing just does not want to keep running. I mean it’ll run after I rev the crap out of it from getting pissed off. It’s like. Maybe it is the program. Well I’ll try something sometime when I get back from holiday.
Thread Starter
Racer
Joined: May 2009
Posts: 364
Likes: 3
From: merced ca
I am at a loss. unless I have a vacuum leak that I just can't find I don't know what else to do at this point. I put a stock tune in on a chip not the otrich. I took the performance coil and ign module out and put the stock ones in. I rechecked the iac and position somehow it changed on the stock tune. This is whats it's doing consistently though. I give a little throttle hold it at around 1300 rpms and when I let off it dies. Anybody want to see a log let me know. apparently I can't upload it here not an accepted file type.
Team Owner
Joined: Jul 2004
Posts: 28,378
Likes: 3,261
From: Hartford WI
I am at a loss. unless I have a vacuum leak that I just can't find I don't know what else to do at this point. I put a stock tune in on a chip not the otrich. I took the performance coil and ign module out and put the stock ones in. I rechecked the iac and position somehow it changed on the stock tune. This is whats it's doing consistently though. I give a little throttle hold it at around 1300 rpms and when I let off it dies. Anybody want to see a log let me know. apparently I can't upload it here not an accepted file type.
Thread Starter
Racer
Joined: May 2009
Posts: 364
Likes: 3
From: merced ca
Why would you think it would NOT change on stock? Did you try resetting it using only the IAC counts? So if it is at 3 counts close the TB plates by turning the screw out, rev and see what it settled down to with everything but the motor off. If you have the screw all the way out and still cannot increase the count, see if you can find a vacuum leak.