Hi Pete
Thanks for the quick response. The truck stopped running a 2 days
ago. At first it would start and idle - but not run. Now it will not
even start, and there is no sound from the fuel pump (as there was
before) - which led us to the Haynes manual and their diagnostic info
on checking the prime circuit. We did check it KOEO - no light at the
test light. Next step was check the relay - but we don't know how to
remove it. Are you saying to push in on those 2 little slits at the
bottom of the relay while pulling upward??
Again - TIA
K in NC
On Feb 12, 3:25 pm, "Pete C." <aux3.DO...@[EMAIL PROTECTED]
> wrote:
> K in NC wrote:
>
> > thanks for all the info so far -
> > in checking the haynes manual, they suggest - listen for sound at
> > pump with ignition key on.
> > it was doing this before - but has since stopped (battery ok at 12V) -
> > they say
> > " if no sound...check prime circuit with test light and turn ignition
> > key ON"
> > Question 1- do they mean KOEO or crank
>
> Key on. When switching the key from off to on, the computer turns on the
> fuel pump for about 3 seconds to prime the fuel injection system. Since
> you aren't cranking the engine at this point the fuel pump should be
> easy to hear.
>
> > Question 2 - how do you remove a relay from fuse box - there seems to
> > be 2 small slits at the bottom of the relay (one on each side) - do
> > these get depressed to pull relay out ?
> > does the relay just pull out with brute stregth?
>
> Not positive on that one, but they are usually just push in and should
> pull out with modest force and a little wiggling.
>
> > Thanks in advance for any info
> > We have checked the vacuum lines visually - no apparent problems there
> > - but have not checked them beyond visually.
>
> If the fuel pump was screaming and now it isn't, will the truck even
> start and idle now? If not then you've found your problem. Replacing the
> in tank fuel pump is DIYable, but it isn't fun (I've done it twice on my
> '97).
|
