[s-cars] ARGH!! Stalling at idle

[R. Mair]

FPR can cause cold start problems, but as you noted, it will be backed up by problems in other areas. Marks problem seems to only be cold starts. After a few minutes everything seems normal. FPR, when bad, will not be selective about only one facet of a drive cycle, unless you have a very very rare issue. If it favors lean, it will always stay lean. Same goes for Rich. If mark was having trouble with cold starts, and the FPR was at fault, then he would likely also notice a lack of power or a miss at WOT. If the FPR sways rich, it will start OK but will go through fuel and will be noticed at the pumps when you have to fill up more frequently,among other things like black smoke and lopey idle. My initial post was that given the exact problems mark spoke of, the FPR cannot be the problem alone. Given your problems however, i can see where the FPR would be an issue.

Rolf

  ----- Original Message ----- 
  From: Mark Strangways 
  To: RM ; s-car-list at audifans.com 
  Sent: Thursday, February 10, 2005 8:31 PM
  Subject: Re: [s-cars] ARGH!! Stalling at idle


  Well, with out starting another war, I am going to disagree with you.
  In my case, maybe only my case, I had (through my own intervention) a very 
  sick little FPR. It caused all sorts of strange little issues.
  Cold starts where a BITCH.
  Warm starts where and where not problems, depended on the day.
  Yet, WOT would run SOOOOO rich, it looked like a diesel.

  I am NOT saying that this is Marks problem, but it should be easy enough to 
  check the running pressure, and bleed down after shut down.

  And that is all I gots to say on this one.

  Mark (not wanting a contract) S
  ----- Original Message ----- 
  From: "RM" <waves at epix.net>
  To: <s-car-list at audifans.com>
  Sent: Thursday, March 10, 2005 11:10 AM
  Subject: Re: [s-cars] ARGH!! Stalling at idle


  >
  > Mark, no matter what anyone says, fuel pressure is not the issue here. FP 
  > is vacuum adjusted, not temp. driven. Yes, in effect the FP reg. could be 
  > bad, but it would affect more than just cold starts. The CTS is the 
  > leading input to the ECM for cold starts. Check here first. Having said 
  > all this, your 95.5 is possibly OBD-2 compliant and requires proper 
  > experience, info systems and tools to diagnose correctly. Most anyone can 
  > visually look for problems (broken vacuum lines or hoses) and most 
  > everyone can replace sensors and switches out of frustration. I have at my 
  > disposal the real factory info system and thousands of $$$ of quality 
  > diagnostic tools, and i still can find difficulty finding problems, esp. 
  > with older cars that have a few miles on them. Unless this is a common 
  > problem with these cars, which it isn't all that common, you'll be subject 
  > to allot of specualtion and that could cost you more than if you took it 
  > to a trusted technician.
  >> Rolf Mair
  >> waves at epix.net
  >>
  >> 94 UrS4
  >> 90 20v turbo 90q
  >> 69 camaro conv.
  >> 02 Allroad (wifes)
  >>
  >
  >
  >
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