Recent content by RedBeast

  1. R

    1989 MJ 4.0 No Spark

    Well that did it i retarded the distributor a tooth and now it runs just fine. So my when i timed the Cam and Crank i must of messed up tho i double triple and quadruple checked it cause i didn't want to screw it up, i still must of some how. The resistance in my sensor grounds was some...
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    1989 MJ 4.0 No Spark

    I dont think that the sensors slightly being off from a slightly high resistance ground is the source of my problem it may add to it but it isnt my main cause. Ill check my ohm readings at the various sensors but this isnt what i think is causeing it. Does anyone have a timing light that they...
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    1989 MJ 4.0 No Spark

    My TPS was set to .60v and about 4v at full throttle testing the green and yellow wire. I have since set it to about .78v at closed and 4.4v at full throttle. I checked the TPS slowly opening it and there was no dead spots in the readings tho it would jump about .1v every time it did show a...
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    1989 MJ 4.0 No Spark

    Alright got it running my ignition control module was bad then those grounds i found in the loom on the fire wall were for the ecu so i cleaned them up and attached them to the oil dipstick stud then i got spark. still woundnt run after some checking and double checking i found i had the...
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    1989 MJ 4.0 No Spark

    Well i cleaned the bottom of the relays cleaned out all the grease which i was assuming was di-electric used brake cleaner which made it allow easier to clean no broken wires. So everything should be good there. I was double checking grounds and the starter relay wires and when i was checking...
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    1989 MJ 4.0 No Spark

    So i have to undue that bunch of wires on the starter relay and find what is causing me to have only 3v instead of 12v right? What wires am i looking for thick gauge wire running in the loom to the ecu or to the fuse block? What do you mean by fusible links? The fuse block or a plug wire...
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    1989 MJ 4.0 No Spark

    The 1st 30 relay pin i think for the heater has no voltage the second 30 relay pin for fuel pump is 3.7v and the last 2 30 relay pins for oxygen sensor and something else are at 12.6v. What would cause the red fuel pump wire to be at only 3.7v is it a bad ground or is it something to do with the...
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    1989 MJ 4.0 No Spark

    I wasnt sure of the yellow wire you talked about so here is the Single Small Wire in the Dual plug at 9.23V Here is the Big Yellow Wire in the Triple Plug at 12.12V
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    1989 MJ 4.0 No Spark

    This is the second relay 30 pin the Fuel Pump Relay With only 3.71V I cleaned the relays when i was finding the fuel pump issues and they are pretty clean
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    1989 MJ 4.0 No Spark

    Ill check the wiring out at the coil and fuel pump relay. Im looking for 12v at yellow at the coil with key on. and then 12v at the red 30 pin of the fuel pump relay too? The fuel pump primes sometimes by sometimes i mean it will and others its like its still primed and doesn't try. I doubt the...
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    1989 MJ 4.0 No Spark

    I have a very loud clicking coming from my relays which i just assumed was from my seized fuel pump and i replaced it with an aftermarket carter fuel pump which is not OE style which is why i assumed it would keep doing it. What does ASD stand for and what might cause that relay to click and...
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    1989 MJ 4.0 No Spark

    Hey there i have a 1989 Comanche base model MJ 4.0 5spd. I got the truck in poor condition and in pieces for free. I have recently rebuilt the motor (Rings and Bearings) and with all new paper gaskets except for head gasket, vlave cover and oil pan and of course main seal. I have duplicates...
  13. R

    1989 MJ 4.0 No Spark

    Hey there i have a 1989 Comanche MJ 4.0 5spd. I got the truck in poor condition and in pieces for free. I have recently rebuilt the motor (Rings and Bearings) and with all new paper gaskets except for vlave cover and oil pan and of course main seal. I have duplicates of every sensor from...
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