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4.0 HO not starting...

320 Views 4 Replies 1 Participant Last post by  TOM85CJ7

I went big time jeeping this weekend, and i soak my Cj, with a '94 4.0 Mpi engine, in a few feet of mud...

i was pull out and i drove back... but 20 minute later, my engine did stall, and i was stuck to get the Jeep on a towing back home... i let it dry and i succesfully started it, but when i shut it down, it didn't want to stat again...

it crank right, the computer have juice... but there's no juice after the coil... i seem to have current before the coil.. but no pulse on the other when it was wet... Any clue??? is one sensor preventing coil ignition? My computer is ok, since i succesfully started it...What else could it be?

My front diff have a big leak at the back, is it a simple seal to change?

Thanks a lot

Egg cj-7 '79

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The negative side of the coil goes to the ignition computer. If its not putting out pulses then the problems is there, in the dist or the engine crank position sensor (located in the bell housing). My advice would be to start checking connections.

As for the will have to replace the pinion seal. Unless you are finacialy someone to do it....its not too easy....

John......southern CA
84CJ7,3"lift,32"BFG,4.11's,ARB,Solid Axle's
Sorry to hear about your Jeep. What language is your post in?

1985 CJ7 4.2L, T-176, Dana 300, 2.5" lift, 32"BFG MT, Durabak On-Board Air
Thanks, the Jeep is gonna be Ok... My language... Well it's suppose to be english, but i guess i have an accent even when i write... my main language is french...

Glad to hear you have another language to rely on. Keep working on the English. Your English is a bit like my Spanish.


1985 CJ7 4.2L, T-176, Dana 300, 2.5" lift, 32"BFG MT, Durabak On-Board Air
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