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1995 plymouth acclaim Only starts when it wants to
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zx6rf7
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Oct 22, 2005, 7:15 AM
Post #1 of 19
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1995 plymouth acclaim Only starts when it wants to
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I have a 1995 Plymouth Acclaim with a 4 cylinder 2.5l engine. It will run good for a couple of days and then it decides it doesn't want to start. It will turn over but it won't fire, it seems to be tripping the auto shut off relay. I changed the engine controller and the shut off relay figuring it was one or the other but they where not the problem. I have been told it might be the Hall Effect Pickup, and to jump a wire between the battery positive and the ignition coil positive to determine if thats the problem. Any Ideas??
(This post was edited by carjunky on Oct 27, 2005, 8:38 AM)
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DanD
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Oct 22, 2005, 9:26 AM
Post #2 of 19
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Re: !995 plymouth acclaim Only starts when it wants to
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When the car doesn’t start have you checked for the lack of spark or fuel?
Running a jumper wire to the ignition coil is not how to check the pick-up coil. If your no start is from lack of spark and you want to test the pick-up coil, you have to jumper a cross two of the three terminals of the wiring harness at the distributor. By making and breaking this connection as quickly as possible you will fool the SMEC (computer) to think it’s receiving an ignition pulse from the Hall Effect pick-up coil.
I’m not a very good artist but have a look at this attempt of a drawing as to which two to jumper.
Here’s how to do the test.
Disconnect the distributor’s wiring harness at the base of the distributor, turn the ignition switch to the run position, with a jumper wire make and break the connection (I’ve shown in the diagram). Make sure it’s the wiring harness side of the terminal you are jumping not the distributors harness.
As you are doing this you should hear the ASD (auto shut down, relay) and fuel pump relay activate, along with the ignition coil arcing a spark, that’s if you have the ignition coil set up to test for spark.
The pick-up is easy to replace undo the distributor cap, remove the ignition rotor and the pick-up coil is sitting there to be lifted off. There is a locator on one of the pick-up coils attaching through holes, so be careful not to install the new one 180 degrees out of alignment from where it should be.
Dan.
Canadian "EH"
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zx6rf7
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Oct 22, 2005, 9:56 AM
Post #3 of 19
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Re: !995 plymouth acclaim Only starts when it wants to
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Thanks Dan I tried the wire test I was getting the Autoshutoff relay to turn on and off and could also here some sounds from the distributor area. I haven't checked for spark lately since this is been and on going problem but I did have spark before and I have changed the igintion coil as well a cap rotor and wires. As for fuel I am not getting the priming cycle So that is why I was figuing it was the Hall effect pickup. But the only thing that is screwing me up is that I am not getting the code showing that there is no igntion signal from the pick up
What do you think???
And do you think I should test for spark at the coil and How??
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Tom Greenleaf
Ultimate Carjunky
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Oct 22, 2005, 11:16 AM
Post #4 of 19
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Re: !995 plymouth acclaim Only starts when it wants to
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Just my two cents. A totally flooded out car may not start without new plugs or burning them to a glow. Careful if you try that. Rare but distributer bearings and the "hall Effect" will screw up. Check dwell and no more that 5 degrees change is right with raised RPM. Good luck with the fix, T
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zx6rf7
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Oct 22, 2005, 2:01 PM
Post #5 of 19
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Re: !995 plymouth acclaim Only starts when it wants to
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I changed the pick up and still no luck it doesn't want to start it just turns over. I also unpluged the map sensor to see if that was the problem but it didn't work either. I am going to check for spark again tomorrow, Any other ideas to check??
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DanD
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Oct 22, 2005, 2:53 PM
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Re: !995 plymouth acclaim Only starts when it wants to
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Well if you can hear the ASD when you’re jumping the pick-up harness you know that the SMEC can recognize an Ignition pulse and the noise you’re hearing from the distributor is likely spark jumping the ignition rotors air gap.
Now try (with a helper) to see whether you have spark during cranking, the way it sounds you know how to so I wont go into explaining, if not let me know.
With you saying you don’t hear the fuel pump prime cycle, I would be going back to the fuel pump connector at the tank and checking whether you have power to the fuel pump. If you do and you have ground at the connector the pump may be at fault for the no start.
I can’t remember what the wire color is off hand but there are only a few wires back there and one should have power to it during initial key on lasting couple of second (prime cycle), during cranking (constant power) and it should last a couple of seconds after cranking. It may be a blue or green wire?
Dan.
Canadian "EH"
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zx6rf7
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Oct 23, 2005, 8:27 AM
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Re: !995 plymouth acclaim Only starts when it wants to
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Got it running by wiggling the wires behind the batteryand taking a couple of connectors apart. but then I couldn't get it not to start to try to find where exactly the problem is so it is going to take the next time it quits to find the problem. Thanks for your help
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Tom Greenleaf
Ultimate Carjunky
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Oct 24, 2005, 12:32 PM
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Re: !995 plymouth acclaim Only starts when it wants to
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Intermittent problems are a major cause of hair loss! They are like fixing Christmas lights!!!! Touch somthing they work - touch something else they fail. Trash can !! and off to a store. Cars are too expensive for that. Keep at it and keep your hair! It's your car so you have a chance to catch it. Imagine the bazillion cars that go to a shop working perfectly. Got the T-Shirt! What the heck are you supposed to do?? There are some where you can make a good guess. This is where info from the customer is critical.
Be well all, enjoy fall if it is where you are, T
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zx6rf7
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Oct 24, 2005, 4:53 PM
Post #9 of 19
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Re: !995 plymouth acclaim Only starts when it wants to
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Well the car is running but it quits wiggle the wires and it runs again. I looked at the wiring today and i didn't find anything but I was looking at the wiring diagram in the Haynes manual there is a splice that comes off the ASR and then splices to the fuel pump and different ignition componets But I wasn't able to locate this splice to check it. I was wondering if anybody knew where this splice is located or have the actual wiring diagram of a 1995 2.5l acclaim.
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Tom Greenleaf
Ultimate Carjunky
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Oct 24, 2005, 6:03 PM
Post #10 of 19
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Re: !995 plymouth acclaim Only starts when it wants to
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Seems like you found the spot!! You can take apart a connecter and just gentlty torque a tad on the male side spade of the connection - grease it all up (dielctic or silicone best) and give it a go. WD-40 works too but doesn't last as long as the greases. Good luck - let us know, T
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DanD
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Oct 25, 2005, 4:57 AM
Post #11 of 19
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Re: !995 plymouth acclaim Only starts when it wants to
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Your probably talking about the dark blue wire it’s been known to give problems, the splice they used for this is stamp welded and then just taped to insulate it.
In most newer car models wiring diagrams they will tell you where all the splices are but not back then, at least not on the diagrams I have, so posting the diagrams I have wont help you to find its location.
I think you’ll find it within 1 to 2 feet of the relays and all I can suggest is to carefully open up the harness until you find the corroded connection.
Don’t overlook the connectors at the relays, the actual connector may fit nice and tight but the individual terminals can corrode and make an intermittent connection.
I’m also just assuming it’s the dark blue wire so do not neglect any of the others leaving the ASD relay any one could cause the system to shut down.
It’s not hard work just very frustrating if you do not find it right away.
Dan.
Canadian "EH"
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Tom Greenleaf
Ultimate Carjunky
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Oct 25, 2005, 7:05 AM
Post #12 of 19
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Re: !995 plymouth acclaim Only starts when it wants to
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Just to add: If you find a corroded connector - check others. Rust buster then grease them up. I use a flux brush in a cap of silicone grease.
If you find a splice as Dan suggested I would cut that whole area out and solder in new wire. I really like the product called "liquid elecrical tape" -- way better than real tape and comes brush in cap. dries quick so put the cap back on. Napa sells it and so does Home Depot and no doubt others. Get rid of that problem! - T 
(This post was edited by Tom Greenleaf on Oct 25, 2005, 9:36 PM)
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zx6rf7
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Oct 25, 2005, 6:00 PM
Post #13 of 19
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Re: !995 plymouth acclaim Only starts when it wants to
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I'll check those connectons. The wire I was thinking about is a green and red one that according to what i have should feed the fuel pump and injector parts
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zx6rf7
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Nov 27, 2005, 3:14 PM
Post #14 of 19
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Re: !995 plymouth acclaim Only starts when it wants to
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The car still isn't starting right we have been wiggling wires and it runs Ok and the next time you start it you have to wiggle them again. I haven't been able to find the bad wire. I was wondering if it is possible to change out the whole wiring harness on the car so that I can eliminate the bad wire all together???
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Tom Greenleaf
Ultimate Carjunky
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Nov 28, 2005, 2:43 AM
Post #15 of 19
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Re: !995 plymouth acclaim Only starts when it wants to
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It's impractacle to replace the "whole" wiring harness since you know the area now. If this is that common they may sell a section with a new connector for the car. -T
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zx6rf7
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Nov 28, 2005, 5:37 PM
Post #16 of 19
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Re: !995 plymouth acclaim Only starts when it wants to
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I need to check out things a little more before I try to change the wire harness or part of. I was wondering if anybody had any wire diagraims for this year other than the haynes manual and if you know which relays are which on the front left fender???????
Thanks
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DanD
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Nov 29, 2005, 5:17 AM
Post #17 of 19
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Re: !995 plymouth acclaim Only starts when it wants to
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Here are the best diagrams I can come up with, I’m not sure what you’re looking for on them, you already know where or approximately where the problem is. A wiring diagram shows you how things are wired not how the harness is routed. Well not on these older diagrams anyway. Don't ask me why one part is in color and the other isn't, because I don't know. They are for the same car though.
Dan.
This is a schematic of the left shock tower showing the relays.
Canadian "EH"
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zx6rf7
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Dec 6, 2005, 6:32 PM
Post #18 of 19
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Re: !995 plymouth acclaim Only starts when it wants to
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Thanks dan for the diagrams. The hanes manual did not show the Fuel pump relay at all so I was getting confussed on the wiring but your diagram helped and it lead me in the right direction. to the fuel pump relay which seem to have the bad connection.
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DanD
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Dec 7, 2005, 3:42 AM
Post #19 of 19
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Glad you found the problem.
Dan.
Canadian "EH"
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