CIS starting problem

[green536@hotmail.com (Chris DeLong)]

Doesnt soudn like a fuel pump cause you say it works when you put the key in 
the crank position. Probably an ignition switch.

However I find it rather strange that you say when you jumper terminals 30 
and 87 of the fp relay that the pump doesnt hum. are you sure you are 
jupering the right relay? cause terminal 30 should have constant power fromt 
eh battery and 87 goes directly to the pump.



Chris DeLong
ICQ#45030867
Seattle, WA USA
'80 16V 'Rocco ragtop
'91 GLi 2.0 16V
'77 Rabbit 16V
'80 'Vert (parting out!)
'61 17 Window type II
'91 Vanagon
'78 Rabbit
'84 Jetta





>From: "Doug C." <cdczajka@msbx.net>
>To: "Scirocco  List" <scirocco-l@scirocco.org>
>Subject: CIS starting problem
>Date: Thu, 12 Dec 2002 19:29:41 +0000
>
>The car in question here is the 88 cabriolet (quickly becoming a 
>headache...just bought it less than 2 months ago and already had to replace 
>the alternator, and now this mess...), anyway the car would not start last 
>night.  It cranks fine, so it's not the battery (has 12.7V so it's fine).  
>I haven't checked for spark yet, but i don't think that is the problem 
>because everything from the coil forward is brand new.
>
>Here's what i have checked.  When i turn the ignition on, there is no 
>audible hum from the fuel pump.  Pulling the relay and jumping terminals 
>87+30 also yeilds no hum from the fuel pump.  A check of power at the fuel 
>pump relay terminals 2 to ground and 4 to ground reveals 12V so the relay 
>is getting power.  A check from terminal 2 to 1 and 4 to 1 gives 12V so the 
>relay is grounding fine.  So i'm suspecting the fuel pump is shot...
>
>Now when i try to start the car it will stay running as long as i hold the 
>key in the start position and give it gas (At which time I can also hear 
>the fuel or transfer pump humming).  As soon as i cease either of these 
>two, the car dies again.  So i'm thinking the fuel pump is shot and the 
>humming that i hear when cranking is the transfer pump.  Is this 
>possible/plausible?
>
>I haven't checked the cold start valve yet or the thermo-time switch 
>because i don't have a helper until later tonight when my girlfriend gets 
>home :(  (same reason i haven't checked for spark).
>
>Any Ideas or Confirmation of a bad fuel pump or what else i should check?
>
>Thanks!
>
>Doug C.
>'88 16v
>Asheville, NC
>
>
>
>
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