Runing like a cammed big block
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Elder User
Joined: Aug 2005
Posts: 763
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From: Dallas, Texas
Runing like a cammed big block
Ever seen this before?
I have no codes.
New Fuel Filter, oil change.
This just started happening today. The truck has not been drivin in 3 days. Now after 15 - 20 miles of driving it starts lobing. When I come to a stoplight the truck is surging forward while idling like a 208/210 cam in a big block. Maybe two revs per second. After a minute or so, it will slowly come back to idle at 720-750. Anybody?? I am going to call Edge to see if they have seen this.
I have no codes.
New Fuel Filter, oil change.
This just started happening today. The truck has not been drivin in 3 days. Now after 15 - 20 miles of driving it starts lobing. When I come to a stoplight the truck is surging forward while idling like a 208/210 cam in a big block. Maybe two revs per second. After a minute or so, it will slowly come back to idle at 720-750. Anybody?? I am going to call Edge to see if they have seen this.
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Elder User
Joined: Aug 2005
Posts: 763
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From: Dallas, Texas
No, same oil. Seems like a fuel problem. I don't think my "water in fuel" light is even on my speedo face. I'm going to check that today. I suspect the fuel, fuel pump, cam sensor or TPS. When it starts doing the wierd thing, I put it in neutral and it slowly goes away back to a regular idle. The truck is also idling at 1050 every once and a while. Otherwise she runs fine.
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Joined: Jun 2003
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From: SC
I "think" it will be in your tuner. If I start my truck in program #2 it will do the same thing. It will lope like hell; it goes from 500rpms to 1000rpms very quick. Just like a huge cam would do. It goes away as soon as I flip to another setting. If I switch it back to #2 it is not there. Setting # 2 on my flip chip is the stock setting. I know we are talking about 2 different programmers, but mine does the same thing. My 8 year old loves it.
Elder User
Joined: Sep 2002
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Either scan it or put a gauge on the hpop, you might have a problem with your IPR. I have a buddy whos truck is doing the same thing, his ICP is at 1600 just Idling. does the truck sound louder and clatter more when idiling?
Last edited by jesse460; Oct 11, 2005 at 10:25 AM.
Freshman User
Joined: Jul 2005
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Wow, Buickturbo I have the same problem. I spoke to Jody and he said it's the IPR. What's your email address? I have a document from Jody on how to clean the IPR. I'm gonna do this today, I'll let you know if it fixed the problem.
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From: Dallas, Texas
Either way, I believe that abreviations always cost a lot of mooooola.
SO what can I expect to happen as either of these problems progress?
What, other than complete part replacement, are better options? (aftermarket)
And when quoting prices on these items, will someone be prepared to hold and nurture me?
SO what can I expect to happen as either of these problems progress?
What, other than complete part replacement, are better options? (aftermarket)
And when quoting prices on these items, will someone be prepared to hold and nurture me?
Hotshot
Joined: Jan 2002
Posts: 17,988
Likes: 207
From: La La Land
Have a look at:
http://cw-diesel.com/LuxSite/IPRInfo.htm
It details the cleaning of the IPR. You may just have some gunk in yours. Lack of regulation would cause the symptoms you describe.
Pop
http://cw-diesel.com/LuxSite/IPRInfo.htm
It details the cleaning of the IPR. You may just have some gunk in yours. Lack of regulation would cause the symptoms you describe.
Pop