Question about Dodge Dakota

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Hello, my 1991 dodge dakota 4x4 with 5.2 engine is in the shop & they can't figure out yet what is wrong. So far the plugs, tps, wires, cap, rotor & 2 reman computers were installed. They put in a new computer twice & the truck will run great for maybe about 5 miles or so and then just die and won't restart. They take the first computer that was in it along on the test drive because at least the truck will start with this computer but really runs terrible. Cannot figure out why these new computers are going. By the way, the truck was driving great before I myself put the new spark plugs, wires, cap, & rotor on it. The shop showed me where a piece that was broken off inside the old computer so maybe while I was changing the sparkplugs I leaned on it & broke it, Anyway, this still does not explain why the old computer will at least start the truck & all of these new ones just go & won't even start it no more. Appreciate any & all help. Thanks!!

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  • myduke51351 Oct 07, 2010

    Thanks, but when they drive it

  • myduke51351 Oct 07, 2010

    Thanks, I guess you did not get my first reply because I sent in the wrong place. Anyway, the shop has tested the hall effect by replacing it with a new one & also tested the fuel pressure. When they put a new computer on it, it will run great for about 5 miles or so & then the computer will fail with no faults or any readings what so ever. Something is just making the computer go bad I guess & cannot figure it out. But like I said before they can't even get any reading from the computer at all after it goes.

  • myduke51351 Oct 07, 2010

    Hello, anyone else have anything that could help me without taking it to the dealer because I already spent a alot. They have checked spark, fuel pressure, & everything else but something is making these computers fail with no readings or faults or anything. Maybe I could check myself some wires going to the computer or something if I had an idea where to start. Thanks alot!!!

  • myduke51351 Oct 07, 2010

    No, when they put the scanner on the truck after it won't start, no readings or codes come out at all as if the computer is just dead. Thanks

  • myduke51351 Oct 08, 2010

    Hello, no they did not replace the fuel injectors yet which I really don't think it is because it runs so great before I replaced the plugs & everything & when you put a so called new computer on it, it will run great again for maybe 5 miles or so until the computer fails. At least the first computer that was in it will start it yet but runs terrible with alot of missing, backfire, and like bucking forward at a stop with your foot on the brake & also the idle will run high and low & want to die unless you keep your foot on the gas & brake. The firing order is also correct. I have spent over 1500 dollars already on it and that is why I cannot afford to take it to the dealer. Now, before I put in the new plugs & everything it also ran great without no problems whatsoever. The only reason I replaced all them things was because they were so old but I should have left it alone I guess. I just don't understand why the new computers just die when at least the old one which is also not the orinigal part will at least start it . Thanks;

  • myduke51351 Oct 08, 2010

    Well, called the shop & they said they already tried that several times I guess. I worked on cars & trucks most of my life & just can't figure out why the first computer in it at least starts it & the other 2 made it run great, but only for about 5 miles or so & then it won't start until they put the old one back in which then of course starts but only can make it back to the shop. They said they tried what you suggested on all the computers including the 1st one but I do appreciate the help. Thanks: This is really a tough one I know!

  • myduke51351 Oct 08, 2010

    Hello, thanks for the tip but like the shop said, that would not explain why the first computer at least starts the truck & they also changed the Hall Effect pick-coil on the first try and that still did not work. I am thinking as they are that the remanufactor computers are just no good where they are getting them from. Thanks again!

  • myduke51351 Oct 09, 2010

    nope, that is not it either. The fuse is good. checked several times. Is it possible that the wire harness itself might be bad or some wire under the dash is causing this? The harness seems find though! Don't know what to tell you! Thanks anyway

  • myduke51351 Oct 09, 2010

    Hello, thanks for the input & I think that is what they are going to try to do because the old computer at least starts it. I won't know until Monday now what they are really planning to do but it is a good shop & that is where I always take my cars or trucks. I have taken some vehicles to dealers where they keep replacing different parts at my expense & still don't fix the problem. I just hope this place figures out what it is because it is a very good running truck with only 53000 miles on it when of course it is running. Thanks again!!!!!!!!

  • myduke51351 Oct 10, 2010

    Hello, yes that is the first thing they thought it was so they replaced the Hall effect sensor & that did not help at all. But thanks for asking. Right now, I have ordered a used computer to see if that cures the problem, I sure hope so because I just can't spend another dime on it. Boy, once they started putting computers on these trucks & cars they really messed up. It would be different if even the dealer could fix them. I have been through this before with a dealer when the check engine light kept coming on & they said it was this & then that which cost me a fortune on a 1981 camaro. The car ran good thought & I finally put a piece of black tape over the light & never had another problem with it. Of course I don't have the problem with the light on this truck, it just won't run. It is really odd that the old computer will at least start the truck & once the reman are put on the truck will run great for mabye 5 miles or so & then the truck just dies & won't start and nothing comes out of the reman, computer as it is dead. They carry the old one with them to change along the road because like I said it will at least start the truck but it really runs terrible. missing, backfire, idle up & down. and if you have to stop it will try to like buck forward when you have your foot on the brake & gas & just pray it does not stall. Anyway, I went to the extra exspense to buy this used one which I won't receive for several days and really am hoping that is what the problem will be. Thanks alot for your help though!!!

  • myduke51351 Oct 10, 2010

    No, they have not tried that with the original one because they showed me a piece that broke off from the back of the old one. I am not even sure they know how to reprogram them anyway but I will mention it to them on Monday. Thanks again!!

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6 Answers

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  • Dodge Master
  • 1,675 Answers

Hi just as a matter of interest has the distributor been checked out? as this could be a hall effect sensor fault? just shutting down with no fuel and no spark is part of the fault do you get this? i think it would be worth a look at just to see, maybe a recon distributor would be your best bet...hope this helps

Posted on Oct 10, 2010

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  • steve morris
    steve morris Oct 10, 2010

    sounds like the ECM might need to be reprogrammed have they tried doing that?

  • steve morris
    steve morris Oct 10, 2010

    the original one , not one of the new ones...

  • steve morris
    steve morris Oct 14, 2010

    by the sounds of things i really would get them to at least check the program on the original one, it might have a bad program in it, there's only one floor with this though, they will have to try to get a program that is the same and compare them, if the new ones are not helping i do not thing the software in them will be of any use, but the garage might be able to get a copy from the manufacturer of the ECM to compare it, have you contacted Dodge ( might be a silly question but still worth the ask) and asked if they had a bad batch of ECM's on recall? or is there an inherent fault with the system that could be a straight forward fix maybe?....

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  • Dodge Master
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Well, maybe they should try to get a good used computer rather than a remanufactured computer.

You're right, I would think that that the remanufactured computer would be just as good as a new one.

Good luck on this repair.

Posted on Oct 09, 2010

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  • Dodge Master
  • 14,036 Answers

IF YOU SHORT OUT COMPUTER MORE LIKELY YOU HAVE SHORT OUT DISTRIBUTOR PICK UP COIL OR SENSOR .

Posted on Oct 08, 2010

  • Jonah Oneal Oct 08, 2010

    CHECK ECM FUSE.MAKE SURE ITS GETTING POWER.

  • Jonah Oneal Oct 09, 2010

    I SAY PROBLEM IN THE PCM ELECTRICAL CONNECTOR.BUT I WOULD GET A CODE SCANNER CHECK FOR ECM FAULTS CODES THAT WAY YOU KNOW WHAT THE PROBLEM IS.COULD BE ECM OR FAULTY WIRING.

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  • Expert
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Hi! Actually we can't really rely on new computers. Everywhere you go it's a trial and error thing for after market replacements can be a victim of factory defects. Have they replaced the fuel injectors? The injectors may be worn thats why it runs terribly.

Posted on Oct 08, 2010

  • dj_relly999
    dj_relly999 Oct 08, 2010

    Alright thanks for the clarification. Please try this. Remove the positive battery connector and let it sit for atleast 10mins. then reconnect it again. Sometimes the computer needs to relearn itself.

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  • Master
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Do you have any error codes popping up?

Thanks!!

Posted on Oct 07, 2010

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  • Dodge Master
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What electronic engine control fault codes does it have? does it have spark? does it have fuel pressure, give me something to work with here.

Posted on Oct 07, 2010

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  • yadayada
    yadayada Oct 07, 2010

    I guess u know this needs to go to a Dodge dealer, u have a wiring problem is my guess here and not a computer issue, the failure rate of Chrysler electronics is less than 2%, so that is not the problem.

  • yadayada
    yadayada Oct 07, 2010

    Until u get this to the dealer and have proper testing done on Dodge testers u won't be driving this anytime soon, been doing this 35 years and do know what it takes to fix these types of problems. well good luck, u will need it.

  • yadayada
    yadayada Oct 10, 2010

    add

  • yadayada
    yadayada Oct 10, 2010

    U might consider taking this to a shop that knows what they are doing.

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SOURCE: I need the correct diagram

tractormanan.jpg Just follow the firing order starting with the white dot as number one.

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1 Answer

1991 1 dodge Dakota 4 cl won't start when it's cold out but after the weathers warms up its fine. I replaced the fuel filter but don't believe that was the problem


Fuel Filter -- doesn't know or care about the temperature

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Oxygen Sensor --over 100,000 miles,replace it

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What your saying-- is when cold-- it is in open loop & won't
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1998 dodge dakota 3.9 runs great for about 10 min. than starts to miss and backfire no check engine light


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Need fairly good spark plugs
Clean Rotor and Cap
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1 Answer

Hello, My 1991 dodge dakato was running great before I changed the spark plugs & wires because they were old. Now, it seems to be running not nearly as good. It seems like their is a loss of power or...


Mess with the TPS( Code 24)
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If you probe one outer wire at a time with red lead of a VOM and black to any metal (ground) you will find one with 5 volts. Leave your probe on it and move the blk to the center sensor wire.
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Starting issue with a 1991 dodge dakota with a 318 v8. I have replaced spark plugs, plug wires, cap and rotor, and now the coil pack after I had the truck stall out and would not start 3 weeks ago. Now...


You may have a bad engine ground to the frame. Check & clean any ground wire connections. Also there may be a ballast resistor mounted on the firewall &/Or the starter that has cracked. This will only allow the truck to start in dry conditions. Make sure your red starter cable is not frayed & in good condition & clean the connections at the battery & starter. Hope this helps. Good luck!

Sep 23, 2010 | 1991 Dodge Dakota

1 Answer

Some of the spark plug wires on my 1991 Dodge Dakoa Sport V8 inadvertantly got removed from distributer cap and I'm not sure I put them all back in the correct order. If anyone can provide information on...


For the 1991 Dodge Dakota 318 cubic inch = 5.2L V8

Firing Order:
1-8-4-3-6-5-7-2

Cylinders:
..........(back)...........
|...8...|..........|...7...|
|...6...|..........|...5...|
|...4...|..........|...3...|
|...2...|..........|...1...|
..........(front)

Distributor:
............3
....4..............6...
.......................(+)-screw: rounded-end of Cap
8......................5
(+)-screw: square end of Cap
.....1...............7
..............2
.........(front)

Rotation: Clockwise

Let me know if this helped, or if you have additional information questions. Feel Free to contact me at FixYa.com!

Aug 26, 2010 | 1991 Dodge Dakota

1 Answer

Firing and cylinder order for 91 dodge dakota 5.2L


isnt there a sticker inside the engine bay somewhere?

Aug 23, 2009 | 1991 Dodge Dakota

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