Re: Fuel System Problems : Help!

["Mark Madison" <markie@proaxis.com>]

Oh damn,  this sounds SOOO FAMILIAR.

A few years back when I was on Active duty in the Marines I was stationed in
Hawaii, and found a sweet deal on an 84 GTI.  I bought the car for $200.00
and only thing wrong with it was it would die in right hand turns.  Come to
find out that the car had a busted pickup line in the gas tank.  replaced
it, and it ran fine.  Well anyways enough of that tangent.. I'll let you in
on some of the other things that was wrong with this "beater".  I quickly
learned all about how a VW worked.  Lots of things were wrong with this car.

I had a problem similar to yours.

First off I thought I had a problem with my fuel pump relay as well.. I
would accellerate and it would cut off and then start going again.  It was
really weird.

Well the way a fuel pump relay works in a VW is like this.  whenever you get
a pulse from the coil  #1 on the relay you get an "on" situation for your
fuel pump.  You also get this "on" situation  when you first turn your key
on because the coil is charging for the first time.

Okay,  Now this #1 is also hooked to your tachometer.  So in  a sense you
could be getting a weird signal sent to your tachometer if your fuel pump
relay was screwy sometimes.
If this happens quite regularly you can make a jumper wire for your fuel
pump relay and just take it out and replace it with this wire.
you need to jump across #87 and #30 contacts to get your pumps running.  Now
don't leave this wire in because this circuit is always hot and if you leave
it in you will run your battery out.  If you really want to get technical
you can put a switch in on that wire soyou can turn it off.  If your car
still sputters and dies for a second then it could be what was really wrong
with my GTI.  I thought the same way you do that it was probably the fuel
pump relay.  Often times I keep a spare wire in my glove box because the
relays going bad in these cars is quite common.  Or you could go the
junkyard and pull one off of any VW and keep it for a spare in  your car.
That should help with other problems.

Well off of that tangent again.  I found that my ignition control module was
bad in my GTI and when I revved the engine and tried to really get on it,
the car would die for a sec.  I replaced this control module and my
situation was cured.

hope all of that babbling helps you out.

Mark Madison

85 GTI
85 Scirocco



----- Original Message -----
From: Night Shadow <soltwede@ucsub.colorado.edu>
To: jason. miller <j.miller@shaw.wave.ca>
Cc: <scirocco-l@scirocco.org>
Sent: Friday, February 12, 1999 1:33 PM
Subject: Re: Fuel System Problems : Help!


>
>
>Ok...from what you said, I'd say that your coil, for some reason or
>another, is not firing momentarily...2 reasons I say that, one- your fuel
>pump relay is controlled by the coil, if it turns off, so does the relay.
>2- your tach jumping....same idea..coil cutting out, tach runs off the
>coil
>
>Eric
>
>
>On Fri, 12 Feb 1999, jason. miller wrote:
>
>> Having some problems with the list!  This is the 3rd time I've sent this
message...  Hope it goes through!
>>
>> Oh great Scirocco guru's,
>>
>>     I have been having some problems with my good old Rocco 16V 2.0L
lately.  I'll try and keep it short and to the point.
>>
>>     While I'm driving my car (this happens all the time, though MOST
often when under slight acceleration, and I mean VERY slight acceleration,
when the engine is warmed up).  The car will "cut out" for a second and then
keep on going again.  I can also hear a "clicking" noise (just like when you
turn on your signal light) sometimes in rapid succession coming from around
the fusebox area.  I also looked at my gauges today, and when this happens,
my tach will usually jump up about 100 - 200 RPM's if you look closely.
>>
>>     I know what your all saying right now... "Damnit, its the Fuel Pump
Relay!".  Well, I'm pretty sure that's what's the problem.  This keeps on
happening more and more often, and it's really getting annoying.  I was
wondering if this problem could go deeper?  Could there be a problem with my
Fuel pump or ignition system?
>>
>>     Also, what the heck does a Relay do?  What is making it "trip"?  Is
it sort of like a re-usable fuse?  If so, then why do I keep on getting
"surges" or whatever?
>>
>>     Help, help, help!
>> --> Jason "Honda Killer" Miller (The Ignitionless Wonder)
>> 1987 16V 2.0L Scirocco
>>
>
>
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>


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