Question about 1988 Jeep Wrangler

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I am half way through the rebuilding process of my '88 Wrangler Laredo 4.2 L engine. The fellow helping me has taken a vacation just after we reinstalled the intake and exhaust manifold. I'm left holding any number of hoses, tubes, and wires, plus the reinstallation of various critical parts. I'm looking for a step-by-step guide on how to complete this project? What do I start with next? Is anybody there to help me?

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Go to auto Zone or Any other Major auto parts store and get the Haynes or Chilton's repair manual on your vehicle. It will give you directions on how to reinstall your hoses and anything on the engine you haven't already put back on.

Posted on Aug 02, 2010

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Where is ign.module for 89 6cyl. wrangler


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.






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Nov 28, 2016 | 1995 Jeep Wrangler

1 Answer

Set timing on 88 jeep wrangler yj


The computer does all the timing adjustments on the 4.0 engine.

Jan 15, 2012 | 1988 Jeep Wrangler

1 Answer

I have an 88 Cherokee with a straight 6 and it leaks oil from my breather what can I do to fix it


Check your pcv valve and make sure the vacuum line that goes to it is not plugged up.
If that's clear and the valve is good then likely you have excessive blow-by ...that is caused by ring and cylinder wall wear. On an engine that old, it's normal but unfortunate. In that case, the only real fix is an engine rebuild but you may be able to minimize how much comes out of there by adding a good viscosity improver like lucas additive. A new breather grommet or seal may also help contain a bit of what's leaking as well.

Dec 14, 2010 | 1988 Jeep Wrangler

1 Answer

Need sparkplug gap setting for 88 jeep cherokee, 4wd, 4ltr.


Make: JEEP
Model: CHEROKEE - LAREDO
Year: 1988
Engine: L6 - 4.0L - FI - - GAS

Part Number RC9YC .035" GAP (Original Equipment Manufacturer and/or Original Equipment Equivalent)

Hope helps (remember rated this).

Aug 06, 2010 | Jeep Cherokee Cars & Trucks

1 Answer

1988 Jeep Wrangler conversion kit


Check out a site called (partsmike.com) if anyone can help Mike can.

Mar 26, 2009 | 1988 Jeep Wrangler

1 Answer

1988 jeep wrangler carb trouble


Ok... If you have any experience with carbs, you can get a rebuild kit. The most important part of any rebuild is to clean out obstructions in the passageways. Most times this can be done by using carb cleaner and spraying compressed air through them.Most times, just spraying cleaner into carb while installed is a waste of time as debris usually consists mainly of fine rust particles from inside the fuel tank, which will remain in the fuel bowl unless physically removed. If you can't do this, next best option is to search local junkyards for a similar unit. When replacing, cut the fuel line in a convenient place ahead of the carb inlet and put an aftermarket filter in the line, to prevent debris from re-entering and causing further problems. Most carbs have the adjustments blocked off. before using, it is wise to have someone who knows how to remove those plugs, do this for you so you can adjust it after installed.
Good luck

Jan 25, 2009 | 1988 Jeep Wrangler

2 Answers

My 2002 jeep wrangler sport 4 cyl engine lite stays on dashboard,it does not affect performance.


Have you taken it to your mechanic to run the diagnostics... I had the same issue and it turned out to be a vapor lock issue that required a gas tank gasket replaced.

Jul 31, 2008 | 2002 Jeep Wrangler

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