Fuel Pump Relay question

[Chris Hall]

On 6/6/05, Huw Powell <audi at humanspeakers.com> wrote:
> 
> Don't assume anything.  There must be fifty ways to get an engine to
> backfire.

Really?  I thought pretty much the only two reasons for a backfire
were poor timing (ECU stopping and starting spark randomly falls under
this) and too rich of a mixture.

> I would say, test items to see what to replace, rather than randomly
> trying to "think" of what it might be.  

I don't think in this case it's gonna be that simple.  The car runs
99% of the time, so whatever is causing the problem is WORKING (and
going to test as so) 99% of the time also.  That's the biggest problem
with this type of problem.

It was like 90° yesterday, so I couldn't coax my girlfriend out to sit
in a hot car to watch the tach to see what happens when I pull the
hall sender plug.  If my memory's served me wrong all this time, and
the tach -doesn't- drop straight to 0, then I think I'm really gonna
have to suspect the hall sender more than anything else.

>By the way, methodically cleaning up all the electrical connections
under your hood might accidentally fix the problem.

What should I try cleaning up other than the battery terminals (no
corrosion on them at all), the battery ground wire (and all wires
associated with it on the side of the battery tray...), and the ECU
wires (they've been done in the last year), etc?  Am I forgetting
something?


-- 
Chris Hall
badcomrade at gmail.com
"making girls cry since 1974"