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3.9L MPI...NO SPARK?!?!?!...Please help 

 

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Posted: Mon Jul 18, 2005 9:26 pm 
Getting Side Ways
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sarcasticmrknowitall wrote:
Anyone ever had probs getting the dizzy out? Both a mate and me had to use a pry bar to get it out (and yes we did take the retaining bolt out first), and now its as tight as to get it back in. Its stopped dead about 5mm before it should. Any thoughts on why???


The bottom tip of the dizzy is not matching up with the gear drive at the bottom of the dizzy hole. Keep trying they are a bit tricky but you will do it without forcing it in.

 

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Posted: Mon Aug 01, 2005 12:14 am 
Parts Gopher
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OK, eventually got around to putting in the new dizzy today...and the bastard still wont start.
We have timing set, we have spark and fuel...so why the f*** wont it start?!?!? Once again, any help is really appreciated. Thanks guys.
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Posted: Mon Aug 01, 2005 11:29 pm 
Parts Gopher
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Any ideas?....anyone?
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 Post subject: Re: 3.9L MPI...NO SPARK?!?!?!...Please help
Posted: Tue Aug 02, 2005 11:19 am 
Getting Side Ways
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sarcasticmrknowitall wrote:
Last week coming home my EA 3.9 MPI just died, so we towed it home. Checking it out, I discovered the coil had split/cracked open, so we replaced it with one that was kicking around the shed. Still no go.
Checked power into coil (ok), checked power out (none). Put on a second coil from a running car. Still no go. Again checked power into coil (ok), checked power out (none).

Has this happened to anyone else?

Does anyone have ANY idea what to try next??? Could it be the TFI module? or the computer?

Any help would be greatly appreciated. Thanks.



hi

usaully the TFI module fails but when replcaed , replace also the hall affect sensor inside the distributor as rule of thumb always replace them two items at the same time.

check all leads for corrsion or broken ends or internal open circuits
chech distributor cap post conditions all 7 posts and rotor air gap check coil post and internal primary/secondary winding resistances and compare to manufactures specs.

usaully a crook ingnition lead over a long period ( places a large load on the electronics ) of time driving will cause a premature TFI/hall affect/ignition coil to burn out

if you need test procedures can post them for you if you like

have fun

cya

 

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