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1994 Chrysler Concorde runs for 30 seconds then dies

Tiny
MULLIGANSTEIN
  • MEMBER
  • 1994 CHRYSLER CONCORDE
Engine Performance problem
1994 Chrysler Concorde 6 cyl Front Wheel Drive Automatic 178k miles

Hi Folks,
I started this question a few days ago and then got cut off. Sorry for the lack of detail.
I can get the car to run for a few seconds or maybe a minute but then it just dies. It won't re-start. If I let it sit for a few hours or a day, it will start again but then kick off after 30 seconds. Sometimes it will sputter a little first, but usually, it will just quit. I replaced a clogged fuel filter a couple of weeks ago and it ran fine for about a week and a half. I can hear the fuel pump engage when I turn the key on and I have disconnected the new fuel filter and watched fuel pump strongly through the line at that point while someone else cranks it.
I put a fuel pressure gauge on the test port and it read 40psi (the book says to look for 39 psi with vacuum connected). But 30 seconds later, it drops to 0 as the car quits. If I try to re-start, it will sputter and maybe run for a second or two as the gauge stays right around 0.
Also, what is this ASD relay the book (Haynes manual) is talking about? Is it a factor here?
Thaks very much for your help.
Bob
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Thursday, February 5th, 2009 AT 6:42 PM

11 Replies

Tiny
ZACKMAN
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ASD (Automatic Shut Down) relay usually powers the PCM, fuel pump, and ignition. Chrysler installs it a a safeguard from burning out your fuel pump, PCM, and/or other necessary electronics. From your description, it is very likely that the ASD relay has gone bad on you.

It is located under the hood, inside the power distribution center. While you are at it, you may want to check the fuel pump relay and main relay as well. The ASD relay is also controlled by a fuse inside your fuse panel.


https://www.2carpros.com/forum/automotive_pictures/55316_94concordefuse_1.jpg

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Thursday, February 5th, 2009 AT 7:35 PM
Tiny
MULLIGANSTEIN
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I'll check the fuse and the relays. Is there a quick way to test the relays? Ohm test or voltage from computer.I'm not sure which pins are which and the schematics are pretty tough to decipher for me.
Also, would the car even run for a second or two if the fuse that protects it opens up?
Not to get ahead of myself, but if there is still some sort of clog in the fuel system; on the engine side of the filter perhaps, could that be why the ASD is shutting down?
Thanks a million,
Bob
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Thursday, February 5th, 2009 AT 8:48 PM
Tiny
ZACKMAN
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The fuse will always allow the electrical current goes through to the relay. When the relay, especially the ASD relay, gets the current, it will work work for about a minute or two, and then shut down once the internal resistor gets too hot from the electrical current. I have seen many of these relays shut down in Chrysler vehicles.

While you valid a valid point with the clogging of the fuel system, it will cause the engine to run rough and/or cutting out. But, it won't shut the engine down and then comes back after an hour or so.

You have to have an ohmmeter (red and black leads).


https://www.2carpros.com/forum/automotive_pictures/55316_Relay_1.jpg



With the key on, check continuity from #2 (red) to #4 (black). If there is continuity, your relay is bad.
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Thursday, February 5th, 2009 AT 11:38 PM
Tiny
MULLIGANSTEIN
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Ok, here's the latest.
According to the book, there should be continuity between 30 and 87 whenn the coil is energized. I think you may have had it backwards or I'm seeing it backwards, but anyways.I tested the ASD relay and the fuel pump relay (which I am assuming is good because it pumped fuel when it was told to). Both relays check the same: without power, theres continuity between 30 and 87A (NC switch). With power (85 connected to ground, 86 connected to 12v+) There's continuity between 30 and 87 (NO switch).
I also checked the fuse and it was fine.
Now, after sitting over night, and checking the relays, I tried to start it again and it just cranked. Then I was able to get it to sputter and run poorly for a few seconds with some ether in the throttle body. (Althewhile the fuel pressure gauge read 0)
I'm beginning to think the fuel line is clogged again between the filter and the manifold.
What do you think?
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Friday, February 6th, 2009 AT 5:39 PM
Tiny
ZACKMAN
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I found this while searching TSB. Try this diagnostic procedure.


https://www.2carpros.com/forum/automotive_pictures/55316_94concordefuel1_1.jpg



https://www.2carpros.com/forum/automotive_pictures/55316_94concordefuel2_1.jpg



https://www.2carpros.com/forum/automotive_pictures/55316_94concordefuel3_1.jpg



Let me know what you find out.
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Friday, February 6th, 2009 AT 7:47 PM
Tiny
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Zackman,
Thanks for that Information. It led me back to the fuel pump. I didn't put the pressure gauge in line but I removed the filter and watched for gas while cranking. Nothing.
I traced the wires to the fuel pump and found that it was receiving power but not pumping.
I took the pump out and applied power and it didn't work so I banged on the side and it started working.
I got another pump from the junk yard and whalaa!
All Good.
So, it looks like the pump was bad all along but intermittent. And the ASD relay was doing what it was suposed to.
Does that sound right? '
The car is running well now and I am cleaning the fuel system with an additive. Should I be worried that there could still be a potential blockage further up between the filter and the injectors? I'm wondering if something burned up the pump.
Thanks alot for your help, you made things alot easier for me. This is a fantasic website.
Bob
P.S. I just wanted to add one more piece of information. I don't know what this websites relationship with original keyless is, but I bought a remote from them (because I saw their add on your website) and it would not program to my vehicle (the one I got from the dealership programmed fine) so I returned theirs for a refund and they just flat out dissapeared. No more email contact, no more phone contact, NO REFUND. It's like they dropped off the planet. I'm only out $40.00 but I am a little smarter. I just thought you might want to inform your bosses or warn other potential customers.
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Sunday, February 8th, 2009 AT 4:17 PM
Tiny
ZACKMAN
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The way that I was trained is that you always diagnose before ruling any part as bad. In your case, it does. The ASD relay working the way it should.

It is quite possible that your plugged filter was responsible to burn up your pump. If you are worried about potential blockage, you can remove the fuel line after the fuel filter and before the fuel rail. You have to have an air compressor (minimum of 20 gallons) and you must have a filter drier attached to outlet line. Blow the compressed air from the engine side down to the filter side.

While I am not involved in the advertising or any monetary fields (for that matter), I will do what I can. Can you post the name brand and (possibly their website) so I can alert the webmaster?
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Sunday, February 8th, 2009 AT 9:53 PM
Tiny
MULLIGANSTEIN
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The company name is Original Keyless, they are in Arizona.
I bought a keyless entry remote for my '06' Monte Carlo. I even spoke to their tech support beforehand and they reassured me that the remote I was ordering was the right one for my car. When I recieved it, it was beat up and scratched (obviously used). Which Ididn't mind because it was at a discounted price.
However, when I got to the part where it does not function at all,

PO Box 25398
Prescott Valley, AZ 86312
(928) 772-3420
(fax) (928) 772-3420
OriginalKeyless@aol. Com

Anything you can do is appreciated, but this is my own fault for not tracking the return package. Like I said, lesson learned.
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Monday, February 9th, 2009 AT 6:23 AM
Tiny
ZACKMAN
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Bob, I have forwarded your concern to the moderator/webmaster section of the forum. If I hear anything from them. I will let your know.

Thanks.
Zack
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Monday, February 9th, 2009 AT 8:45 PM
Tiny
MULLIGANSTEIN
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  • 21 POSTS
Zackman,
I owe you an apology. I just discovered that I was on a different website when I found that remote keyless entry company.
I suppose it doesn't hurt to warn others about "ORIGINAL KEYLESS" and inform everyone I can that they are unreliable, but I certainly don't want to associate 2carpros with anything adverse as this is one of my newest and most favorite sites.
Thanks,
Bob
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Thursday, February 19th, 2009 AT 8:55 AM
Tiny
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Hi Bob,

That is quite all right. I will forward this to the webmaster as well.

You have a good day.
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Thursday, February 19th, 2009 AT 9:57 PM

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