[V8] Slight acceleration issue

Michael Larosa Jr Mc.Larosa at Sun.COM
Wed Mar 2 12:05:46 EST 2005


There is also a water temp sensor in the rear of the passenger side head.....

Cheap part.. like 10-30 bucks or so...


Mike



Ed Kellock wrote:
> My surge issue is largely cured.  The most recent fix was the vacuum
> line that comes from the lower passenger side of the intake hole when
> the lower filter box is removed.  Since then, I'm fairly convinced
> that it's time to renew caps, rotors and since those were replaced
> last right after I bought it in '99.
> 
> I replaced the fpr, the spark plug wires, the oxs, the intake air temp
> sensor, and the throttle position sensor without any noticeable
> difference.  The oxs probably made the most difference of any of them.
>  I'm using a 4-wire with the groud wire connected to one of the bolts
> that holds the cruise control diaphram bracket to the top of the back
> edge of the block, chosen because there is another rather
> significant-looking ground wire located there.
> 
> When I got my car the cams were not properly timed from a previous
> timing belt replacement (after catastrophic failure), supposedly by an
> Audi dealer.
> 
> That was corrected a couple of years ago and the car ran much better,
> but still surged.  When I first bought it I went through the vacuum
> hoses, but the cc hose was either not caught or developed over time.
> 
> I guess I'd do the OXS first, then the FPR, then resolder the intake
> air temp sensor connections because these are all cheap and easy.
> 
> Ed
> 
> On Wed, 2 Mar 2005 07:52:44 -0800 (PST), S_Matus <scott_matus at yahoo.com> wrote:
> 
>>I'm guessing the fix is the FPR, but I'll explain the symptoms.
>>
>>While in 3rd gear under moderate accelleration (not WOT).
>>
>>The car pulls strong, but there is a slight hesitation (reduced power) that lasts for 3/4 to 1 second in lenght. The car then pulls strong again for 1 second.  This sequence repeats up to redline.
>>
>>I'm guessing this is a fuel issue.  Is it the Fuel Pressure Regulator or fuel filter?  Other?
>>
>>Thanks,
>>Scott
>>'91 V8QM
>>
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-- 

     _/_/_/  _/    _/  _/     _/      Mike LaRosa
    _/      _/    _/  _/_/   _/       TSE - HAS
   _/_/_/  _/    _/  _/  _/ _/        1617 Southwood Drive
      _/  _/    _/  _/   _/_/         Nashua, NH 03063
_/_/_/   _/_/_/   _/     _/
   S U N                              Phone: 781/442-1250
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