Fuel Pump Relay question

[Huw Powell]

> With the backfiring problem, I have to assume that something is 
> telling the ECU stop spark.

Don't assume anything.  There must be fifty ways to get an engine to
backfire.

> Maybe I should just go ahead and replace the hall sender.

I would say, test items to see what to replace, rather than randomly
trying to "think" of what it might be.  By the way, methodically
cleaning up all the electrical connections under your hood might
accidentally fix the problem.

> Isn't it VERY rare for the sender itself (not the wiring) to fail
> though?

That would be a good reason not to replace it.  If it were a regular 
repair item it might be a different story (like your cap & rotor, for 
example).

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/