1995 Jeep Wrangler YJ

PCV bad. (or its hose pinched, clogged or even backward)

1. PCV is failing fix this first for $5 or remove it and see how bad blow by is. visually. (remove only valve covers side to test )
2. or cracked or collapsed piston.
3. or cracked head gasket, compression tests pass?

yes one of the best jeeps are YJ, not full 10 stinking married computers , wish every day I never sold my 2002,
2002 is the last good jeep IMO

blow by is most mostly past bad piston rings, even warped cylinder from past overheated engine,

The YJ used a 2.5 L AMC 150 I4 or optional 4.2 L AMC 258 I6 until 1990

which one, 4 or 6 cylinders.???

YJ jeep Jurassic Park

1992 Jeep Wrangler YJ Sahara models
all are great.

ok just the word, 6cylinder.
but they had many.
early wrangler ,called the YJ jeep. true name.
be nice to know the VIN, number, xxxx on end.,
this tells the helper whats there, if still stock , is it? many are NOT.
many this old are engine swapped,
no photos by you of engine nor distributor...
nor the connector pin count on side of distributor.
lets do displacement first is it the 4.0L ?
with throttle body. injection, or a carb.?
1989 is a year of rapid changes, I had 2x 88s.
some have the french EFI , called Renix.
with 4 injectors, and a brain dead ECU. horrid.
this have there very own different spark systems.
I think the last carb ever on wrangler is 1987.
before this worse electronic carbs, yup , avoid them.
4.2L inline 6 no the 4.0L (5million made)
looks like injection did not happen on YJ until.... 1991. later
than all other jeeps, 4 years, late.
I had many of the others, my beloved, Comanche 88
500k miles long....
has spark timing, check.
has distrib. check
has sepr. coil check' has module outside, check.
im on line now at mitchells so could you.
its"
The ignition module is mounted next to the battery on all models. It is a sealed, weatherproof unit on the 4.2L engine. 1987-90 vehicles equipped with a 2.5L engine, incorporate the coil in the control module."




seem you have this. says wiki.
4.2 L AMC straight-6 engine, 358cu/in. engine.

CHECK BATTERY VOLTAGE.IT SHOULD BE 12.5 VOLTS.IF BATTERY OKAY.YOUR FUEL FILTER COULD BE STOPPED UP.OR YOU NEED NEW PLUGS + WIRES + CAP AND ROTOR.

they are probably attached to the throttle body and pcv valve probably one to the air box...without seeing it i can't help out unless i see it and what they lines look like...they might even be ported vacuum for the cruise control or brake booster

Have you had fuel pressure tested, and/or filter changed. Have you checked for plugged exhaust, such as catalytic converter? Quite often engine will also run a little hotter than normal when exhaust is plugged.

i have a 1988 jeep wrangler 6cyl with 5 speed transmission. I was shifting the jeep and it got stuck in third gear. We opened it up and saw that the linkage is aligned and everything is in place. I dont know what is wrong and what to do next. please help ....

the motoor is having trouble breathing pcv may be clogged check all breathers clean as needed or its over filled

It would be great if you could find the Ignition Control Module!!! From my experience on my Jeep...90 YJ 4.2 liter carb. it does not have one...Computer controlled only...

yes you will...
but it worth it

i just bought a used 97 CHEROKEE but i had the same problem, when i got to looking at it i found out the front driveshaft was shot, look at that, if its not it i would say its probably the transfer case especially with an older vehicle like that which is a very expenxive repair