I started to say "check the crank sensor" too but I
didn't. Dang! I might have seemed smarter to people if
I'd suggested that too! No,actually I
wouldn't've,prolly. Too high of a hill to climb for
me!
I'm going to bed.
Steve P.
--- "Bernd D. Ratsch" <bernd@dodgetrucks.org> wrote:
>
> Check the crank sensor harness - the older models
> have a silver cover (heat
> shield conduit) that sometimes touches the starter
> connection and causes
> starting issues (crank sensor voltage). Bumps in
> the road can cause the
> problem to come and go at random.
>
> On the fuel pressure, put a pressure gauge on the
> line and see if it falls
> right away after the engine is turned off.
>
> If you happen to have access to a scanner, watch the
> cam/crank sync when the
> problem happens as well.
>
> - Bernd
>
> -----Original Message-----
> From: Ned Buckmaster [mailto:Ned@Buckmaster.com]
> Sent: Sunday, July 01, 2007 8:18 PM
> To: dakota-truck@dakota-truck.net
> Subject: DML: 2002 Dakota 4.7 hard start
>
>
> I have a friend with a 2002 quad cab 4.7L 4x4
> Dakota. For about 6 months
> now, he has had intermittent starting problems with
> it. Sometimes, it will
> start right up (like my 2K 4.7L 2x4 does all the
> time. Other times he has to
> crank it for 10 to 20 seconds before it will slowly
> start to fire and then
> start. It mostly happens after it sits for 5 or more
> minutes, but sometimes
> it can sit for days and start right up. Once
> started, it runs fine, gets
> good gas mileage, all is well. It has never shown
> any code on my code
> reader. We tried Chevron Techtron injector cleaner
> first, and it seemed to
> help for a few days. In fact, everything we do
> _seems_ to help for a few
> days, then it goes back to not starting.
>
> He took it to an independent mechanic, who measured
> the fuel pressure and
> said the fuel pump was bad - and wanted hundreds of
> dollars to replace it.
> We ordered one from RockAuto, and put it in about a
> month ago. It started
> right up for a few days, then started doing the same
> thing.
>
> we then installed new plugs and removed and cleaned
> the throttle body.
> Installed a new PVC valve. Worked good for a day or
> two. At this point we
> started swapping parts between his and my truck. IAT
> first - same thing.
> Then the IAC valve - same thing. My truck still
> starts fine.
>
> He plans to get a fuel pressure gauge, and see what
> it is reading when the
> truck won't start. But since we have already
> replaced the pump, and there is
> no filter or anything in the line, I can't see low
> fuel pressure being the
> problem.
>
> Anyone have a thought on what else could be going on
> with this truck? We are
> running out of ideas.
>
> Thanks,
>
> Ned
>
>
>
>
>
>
>
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