1990 Jeep Wrangler - Page 3 - Answered Questions & Fixed issues

how to who can ? ask a real question.

Wrangler. Cardone says there is not one? why not say why you think its bad, or why you want one,????? a science fair experiment? great question. are you in USA< locations matter , buying parts!!! but you failed to say what engine? 4L or 2.5L (neither have a mAF) the both engines, I have both i 2 cars. use MAP sensors. The speed density system. neither use the Air density system. let me guess, car runs crappy and guy on bar stool said, bad maf. rigth. (just joking, it was a web bunny guy who said it) better is to post the symtoms and ask for wild guessing or ask for the tests, (me) and never pick the most expensive part on top change , guessing. try a tuneup first.

wiring or electric motor prob or it could be vacum line prob too.

90 wrang . what is your hand touching, which shift lever. manual stick or auto )( tranny, we cant guess that. 4wd ( given clutch and A/T not bad) are you on ICE or dirt? or pavement.? part time 4wd does not work on dry pavement (dry means no ice) if not on ICE/Dirt.?? then read this, it tells you the end zone. the destruction.... http://www.fixkick.com/part-time-test.html

Just replace it with a genuine bosch unit ,end of story

it might just be your exhaust bagging on something

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...

Is there a question there?This is just a chat room nota repair shop or business, that quotesprices about the unknown for no reason

check fluid level. if low it will shift hard. also fix leak. could be a pan gasket or a cracked housing

does it sound like its getting faster as you accelerate? could be the throw-out bearing in your clutch

There should be a plug on the bottom of the transmission to drain and a plug on the side to fill it. No spark could be a relay or the coil among other things. You may need a shop manual and wiring diagram to troubleshoot the ignition system.

its a bad fuel pump relay. replace it with another relay. you can also take or like fog light relay and replace it with that or replace it with something less important like horn relay.

A tuneup is easy to do, You don,t need a manual, My 3 year old niece could tune up a vehicle with no help,

If you have a fuse it will be in the power distribution center near the battery main fuses and relays are inside.
Check the charging system with a volt meter right at the battery. Battery standing charge should be no lower than 12v if charging you should read between 13 and 14 volts running, about 13 with all electricals turned on. If not, the alternator isn't working OR the regulator has failed. (some regulators are part of the main computer but you need to check which system you have. AND do check for fuses.
If charging system is working you may have a system draw that is pulling the system down overnight. Check that with an ammeter between either cable (removed from battery) and battery connection...pull fuses one by one till draw disappears then check components in that system. Don't be concerned with "low Draw" items such as radio that always pulls something to keep memory and clock working.

Yes. Gebback to us. Check for timing advance when you check timing. Also check carb mounts for leaks.

my son had same problem with his land rover discovery, it was something to do with imoboliser, he shuts n opens drivers door a few times n car starts, hope this helps

may need a harness wiggle test-they jiggl the wiring around to notice a connection issues--hav an electrical specialist doit--not a dealer please--or get a haynes manual for wire maps

HAVE A WIRE GROUNDING HAVE TO FIND IT

try a new coil.some times a new coil will fail

If the check engine light does NOT come on when cranking, at the times when it won't start, and the relays are clicking and buzzing, then your ECU is in need of repair. The engine will only start after the check engine light comes on and the ecu is what controls that. ECU is likely going bad, causing the delayed start problem typical of early 90's jeeps. Reasonably priced repair or replacement services for your jeep ECU are available on ebay.