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  1. C

    weak spark

    I got a 1988 comanche with a 93 4.0 h.o in it for a plow truck. the other day I was pushing back some snow banks and while getting ready so push another bank it started stuttering and just died. ive tried every thing i can think of. new coil new, ignition module,pick up coil, tps ,checked the...
  2. C

    MJ brakes not working

    I have the valve on the back but it appears to be a block of rust and is disconnected. there are two lines going back from the valve in the front and they just T together with the line on the axle. I think the fluid is coming from the master cylinder and going right back. If I pump the brakes a...
  3. C

    MJ brakes not working

    I have just finished my 4.0 H.O in to my 1988 comanche and had to replace a few rear brake lines. I Have bled them several times but they still don't work right.I can't even drag them on the wet dirt. I think it may either be the booster or master cylinder. i have to pump them several times with...
  4. C

    please help MJ Spittin' and Sputterin'

    the MJ was originally a 5-speed so I swapped over the flywheel and left everything else alone,maybe i should of said that in my question but anyway it was the MAP sensor, had the wire hooked up but not the vacuum line. once that was hooked up it ran beutiful ever took it for a spin around the...
  5. C

    please help MJ Spittin' and Sputterin'

    I picked up a 1988 comanche with a blown motor for free from my father. While looking for an engine i ended up getting a 94 H.O from my uncles shop for $50.00 with around 30,000 on it. I got it all swapped in and hooked up but damn this thing runs terrible. it idles at about 450 and shakes all...
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