[DML] Re: Fuel pump gets hot...
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[DML] Re: Fuel pump gets hot...



Tom,
     Great question, and thanks for pointing to us.  Yep, we have A 
LOT of experience with fuel delivery issues.  Let me go point by 
point in your email.

A pump sound and quitting isn't good.  Time to go into the tank and 
inspect everything: the pump, the baffle, and the lines.  Chances 
are your pump is letting you know it is giving up.  Mid 70's on a 
full tank is a great fuel situation so for your pump to quit there's 
definitely an issue.  I'd bet on the pump, but visually inspect 
everything and see if you can find an obvious problem.

A bunch of us bought John Hervey's air dam over the past year.  I 
can tell you right off the bat it does not hurt or do anything 
detrimental to the fuel system or to handling.  I have had my car in 
excess of 130 MPH with the air dam and there was no front-end float 
of any kind.  I find it works best when idling or moving in city 
traffic.  Since asphalt temperatures can exceed 130 degrees in the 
summer, the rubber air dam directs that excessive heat away from the 
fuel tank and certainly does its job.  I had a quiet fuel pump all 
summer.

Marv had major pump issues this summer up in Las Vegas.  He 
installed a temperature sensor the pump area to monitor conditions 
and even used a small transmission cooler setup mounted in front of 
the radiator to cool return fuel before being dumped back into the 
tank.  While I agree that this is overkill in most places, it has 
worked for Marv with great success.  Pictures can be found on the AZ-
D Yahoogroup.

While these are good solutions to the symptoms, they won't fix the 
problem, although they have a good chance at alleviating it.  Start 
with a visual inspection and let us know what you find.

Good Luck,

Matt Olans
VIN 16816
www.az-d.org




--- In dmcnews@xxxxxxxxxxxxxxx, "Tom Tait" <TTait@xxxx> wrote:
>
> I know this has come up before, and that AZ-D probably has the most
> experience with hot weather operation - but in this case it seems 
extreme.
> 
> I've just gotten my car running regularly in the last month or so -
 and on
> some days, even in the mid 70's the fuel pump overheats.  It even 
happens
> when the tank is nearly full.  In all occurrence it seems to 
happen when the
> car idles a lot, as opposed to just driving a lot.
> 
> First the pump gets loud, then it quits, it takes about 90 minutes 
before it
> runs again.
> 
> Is this a sign that I have a kinked pickup line?  Defective pump?  
It sure
> does seem to be tied to the fans blowing hot air on the tank 
because it
> happens during heavy idling periods...
> 
> What experience do any of you have with SpecialTautos Hot air dam?
> 
> Tom
> 10902
>








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