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Old 10-01-2006, 02:03 PM
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93 Plymouth Acclaim fuel pump relay

OK I got a problem with my girlfriends car.
She was on her way to work this morning and the car died.Appearantly she says it started pinging going up this hill and 1/2mi down the road she let off the gas to let a car out and after it wouldn't accelerate,the car had shut off.
I get there and turn the key on,no fuel pump sound in tank.I try starting it and it won't fire.So I pull the plug to the fuel pump relay and jump it with a wire(hot wire to pump wire)and I can hear the pump.
Go to the junk yard(dies 1/2 mile up road LOL) and get a relay same problem.So now with the new relay plugged in,I try jumping from main hot to the relay actuator and the relay clicks and the pump runs.
I keep it jumped but no start.It also feels like as she trys to start the car the relay is clicking off then back on(with it jumped main hot to actuator).So I get thinking maybe I flooded it by keeping the pump running to long.So I tell her to hold the gas to the floor with no pump jumped,it started I expected it to stall but I drove 5 miles home.Ran normal as day.

I know I'm asking for a long winded story to be decoded here but I really have no clue what to think.I'm not very car electric savy.But I don't want her getting outta work at 10pm and having the car die some night again.

Any help is cool.
THX
Sam
Edit:I went out a little while ago after the monsoons stopped and turn the key on and I can hear the pump in the tank and it starts on one click.
Is there sensor that controls the pump relay?

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Last edited by 78 monte; 10-01-2006 at 04:09 PM.
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Old 10-01-2006, 05:08 PM
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Doc here,

One of the things I find Very helpful..

Before deciding anything..

It's always good to know what car it is...

Nevermind..just saw it in the title block..

Does the Car have an engine stop relay? check that..it may be getting a code..

Also when you turn the key on..I think normal power is bypassed from the pump relay to get it started until it gets up to speed..you may have been flooding it..with a jumper..

meantime , I'll try to find a schematic for an better , more exact answer..


Doc
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Old 10-01-2006, 07:24 PM
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Quote:
Originally Posted by docvette
Doc here,

Does the Car have an engine stop relay? check that..it may be getting a code..
Doc
I'm not sure what that is??Its got a starter relay next to tghe fuel pump relay I know that.?
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Old 10-01-2006, 09:56 PM
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Dodge products of that era were plagued with ASD relay issues. (Auto Shut Down) The relay controls a number of systems, mainly being spark and fuel. Bad grounds to it and corrosion were the main culprits.
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Old 10-01-2006, 10:30 PM
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Quote:
Originally Posted by sbchevfreak
Dodge products of that era were plagued with ASD relay issues. (Auto Shut Down) The relay controls a number of systems, mainly being spark and fuel. Bad grounds to it and corrosion were the main culprits.
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Old 10-02-2006, 02:04 PM
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Well.................the car started right up and ran took it for a 40 min ride last night.
Today the GF took the car too see a freind in the hospital and she hit the railroad tracks and boom out it went again.
Any clue how I should go about looking for a bad ground?I have no clue how theese are wired and were the ground points for the ASR is??
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Old 10-02-2006, 04:55 PM
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Doc here,

Bad grounds as well as power, Ill Fitting sockets / Plugs are always the first place to start..as well as relays loose in the socket or burned base plate for said, same relays..

Go Here:
Schematics

And Choose the PROPER diagram for your car..(there are about 100 of them, another milestone..)

Then go here :

Componet locations

To Locate where the Fine People at Plymouth Hid all that (and I use the word freely)..CRAP..at .

Then apply normal Harness/ Device troubleshooting procedures.

Doc
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Old 10-02-2006, 07:00 PM
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Any clue what body an Acclaim is?The schematics are listed by body code.
If all else fail could I just hack the relay out and wire the pump off a keyed hot??
Or do these EFI piles turn the pump on and off according to fuel pressure?

Last edited by 78 monte; 10-02-2006 at 07:07 PM.
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Old 10-03-2006, 12:01 AM
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Quote:
Originally Posted by 78 monte
Any clue what body an Acclaim is?The schematics are listed by body code.
If all else fail could I just hack the relay out and wire the pump off a keyed hot??
Or do these EFI piles turn the pump on and off according to fuel pressure?

Doc here,

Call and ask the dealer what body the Acclaim is...

If you hack the relay out, I see two possibilities for problems..
  • The relay control circuit will now not have a resistance (coil resistance) and open loop the Computer..shutting down the ASD relay (no start)
  • The relay was placed there to buffer or current handle the fuel pump..If you "hacked around" it..to the control wire now..you'd burn up the computer..If you used a wire to the ignition , you run the risk that the pump may pull more than the system your hacked into may be able to tolerate..AND it may be looped into some other sensor...where it needs regulation to run right..

Also it may code all the time on you..whatever the requirements are where you live..a light will get you a fail on a smog...something else to consider..

Doc
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Old 10-03-2006, 09:28 AM
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I will call the dealer today and ask a few Qs.
Doc,I got reading the Haynes manual for my Shadow(basically same car)and the ASD sounds more like the problem than the fuel pump relay I origanaly thought.
The ASD description in my haynes manula say Quote:
"If there's no ignition(distributor)signal,present when the ignition key is turned to the RUN position,the auto shutdown relay interupts power to the electric fuel pump,the fuel injectors,the ignition coil and heated oxygen sensor."
She says when the car died it just shut off COLD.No burble or stumble like when ya run outta fuel.Just off like ya turned the key off.
So from what I gather..............the hall effect in the distributor sends signal to the computer which tells the ASD to close.........Right??
ASD is code 42 in my manual.

So does this sound like a plan??

1)Read the code in puter
2)Check the connector to both the ASD relay,and hall effect.
.....if those aren't it.........
3)Try change the ASD relay
......if thats not it........
4)Change Hall effect
......if thats not it....
5)Change the computer??

Another thing I don't think this effects it,But when she got the car the kickdown linkage was rusted stuck downshifted.When I pushed it all the way back with pliers the car would not start.So I pulled it forward just enough so it would start and left it(3-4months ago)I left the kickdown cable disconnected.When it wouldn't start that would be more to do with the neutral saftey than this right??
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Old 10-03-2006, 01:51 PM
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OK so I read the codes and if I did it right I got the ASR code(42).The connection to the distributor hall effect and the ASR relay look OK and feel tight.

Start changing parts now??
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Old 10-03-2006, 06:13 PM
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Quote:
Originally Posted by 78 monte
OK so I read the codes and if I did it right I got the ASR code(42).The connection to the distributor hall effect and the ASR relay look OK and feel tight.

Start changing parts now??

Doc here,

Swap the relay out with another (not effecting the ignition system) And try it again (you may have to clear the codes)If it works get a new relay...

The signal from the Distributer sets up the timebase for the computer reference (on most) tells the injectors to run faster / Slower..smog parts to adapt..So a Bad pulse OR a shorted tach could kill spark..

I assume you already have checked all the fuses..ECM, ECU, COMP, INJ..ECT..and they were ALL good..right?

Doc
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Old 10-03-2006, 07:20 PM
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Well I called the dealer and talked to the parts guy.Told him what was goin on,Code 42,dies for no reason,no fuel pump while its dead.He goes "does it start after it sets awhile" I say "yep". He says Hall Effect.He said 99.9% of the time its that.So I put one in,new sorensen so far so good but we'll see I guess.
If nothin else while the cap was off I got to see that the cap and rotor are due for replacement soon.
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Old 10-04-2006, 12:29 AM
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Doc here,

Keep us updated..

BTW: change that cap and rotor post haste..a jumping spark inside the dizzy can wipe the opti spark and module..aand again, no ref. pulse..no fire..

Doc
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Old 04-19-2007, 03:09 PM
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same problem

so whats the final verdict
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