Turn over but no spark
Why not the full story?
it ran ok, but misfires, so decided to do a real tune up, yes?
or is this a new engine, we can not guess context ,only you can say it.
no spark at coil? all spark plugs dead.
but i bet you dont know about ASD.
and takes 2 people to check spark
because 1 person can not turn the key and see spark by him self.
and it can only last for 3 seconds
so test 1 is no coil spark is.
check that the ASD pulls in. does it? if not fix that.
if it does, do you get spark for 3second then ends as ASD drops?
bingo fix that.
this page shows how all works, and to use the DTC errors for clues.
big clues.
http://www.fixkick.com/Jeeps/ASD.html
SOURCE: 1989 jeep wrangler has no spark
if this vehicle has a crank positoin sensor, i would suspect that first before anything else. it would be mounted transmission bell housing toward top. very common poroblem with jeeps. does it have fuel pressure?
SOURCE: 4 cyl. won't start,new plugs, wires,cap,etc.
a crank sensor tells the coil to fire.are you getting a signal at the coil to fire?
SOURCE: 91 Jeep wrangler New everything idles rough, no Power then dies
you check for miss how is compression
SOURCE: 98 jeep wrangler wont start. no spark from coil.
there is only two things left. the crank sensor that is located at the top of the transmission bellhousing or the pick up inside of the dist. it is that black plate that sits between the cap and the dist housing. hope that helps.
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