RE: moving distributor, injector sync.

From: Holloway,Frank T (Frank.T.Holloway@kp.org)
Date: Fri Jul 31 1998 - 14:04:18 EDT


> -----Original Message-----
> From: Holloway,Frank T
> Sent: Friday, July 31, 1998 10:21 AM
> To: 'shetland@erols.com'
> Subject: RE: moving distributor, injector sync.
>
> Patrick,
>
> I did some reading and playing last night and I am even more confused
> then
> I was before. In the service manual 95 Section 8 It does talk about
> injector
> phase being controlled by the camshaft sensor located in the
> distributor. And
> indeed if you hook up the scan tool, you can bring up a screen that
> tells whether
> you are "within limits" and how many degrees you are off. You even
> have and error
> code associated with it "error 54 no fuel sync (camshaft signal)
> during engine cranking".
> My confusion centers around wether or not Dodge is using this sync
> signal as the "primary"
> source for injector phase. Dodge also uses a crankshaft position
> sensor on the Magnum
> engines. This sensor is used for ignition, and I would hope that it
> would be used as the
> primary sensor to trigger the injectors. It's a heck of lot more
> accurate then the one in
> the distributor (timing chain stretch, camshaft flex, etc). The only
> use that I can see for
> a camshaft position sensor, would be to locate number #1 TDC power
> stroke, once located
> there would be no need to even look at it. Remember crank turns at
> twice the speed as
> the camshaft. With the crank sensor, you would not know whether you #1
> TDC power or
> exhaust stroke. If you start the engine, you can actually un-plug the
> camshaft sensor
> and it still runs. The real question then becomes "after start" does
> Dodge use the crank or
> camshaft as the "primary" sync signal for firing the injectors. Only
> the Dodge powertrain
> Gods now for sure.....
>
> Frank
>
> -----Original Message-----
> From: Patrick and Kelly Engram [SMTP:shetland@erols.com]
> Sent: Monday, July 27, 1998 4:15 PM
> To: dakota-truck@buffnet.net
> Cc: Holloway, Frank T
> Subject: Re:moving distributor
>
> The TSB was for a '94 5.2L, but it probably overlaps onto many
> other
> years.
> As for setting codes, etc. I really dont know, I have no answer
> to that
> Maybe chrysler made that the adjustment so small that the effect
> is
> insignificant.
> Any one have a snap-on scanner that can check into this?
> Patrick



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