20 Most Recent 1989 Jeep Wrangler - Page 7 Questions & Answers

Whats a nutter bypass? these are none for a few things that cause a no start, the first is a fuelpump, try having someone crank the engine and at the same time beat on the bottom of the gas tank with a rubber hammer and see if it starts, if it does then pump is bad. the next thing to check is check and see if it has spark, if it does then it a fuel problem if it doesnt then i would check the coil and the pick inside distributor. start with these things first. good day.

1989 Jeep... | Answered on Aug 12, 2011

check egr valve for mechanical problem,rusted mount,bent or missing actuating rod. if so a new valve will be needed.

1989 Jeep... | Answered on Aug 10, 2011

put new timming chine and gears, getting gas , but wont start

1989 Jeep... | Answered on Jul 28, 2011

My jeep wrangler wobbles like it needs an alignment.been off roading though. how do i fix it

1989 Jeep... | Answered on Jul 15, 2011

Give me some more information about this problem. May be i can help.

1989 Jeep... | Answered on Jul 14, 2011

crappy photo hope this helps

1989 Jeep... | Answered on Jul 14, 2011

It's likly you did alot of damage. First with a well charged and correctly installed battery it's best to cheal some other things first. The large fuses near the battery( fuseable links) need to be checked to see that their connected. Use a test light to test all of them. ( a test light is a tool that has a bulb in the handle of a tllt that lloks like a clear ice pick and has a wire coming out the end oif the handle. on the end of the wire is a clip to connect to ground ( the negative post on the battry) and as you touch the piont to the positive post of the battery ( or anythign powered) the light will light in the handle showing you that the power is getting to there) The test light should be as bright as the connection at the batery was or you have detrcted a poor connection if the light is'nt as bright as the battery was. Going though all the wires coming from the battery ( theirs alot) repair any that are dead. Then go to the fuse box and do the same thing. Use the test light as a blown fuse can (look ) good and be bad. on the tops of the fuses theirs a little bare place on the fuse and just touch the test light and if lights up on both sides it's good .. If it lights on one side it's bad it it does'nt light at all it may not be on. ( key on or lights on or key turned to crank may need to happen for somes fuses to light the test light) If one side of the fuse lights the light the other side sould light too. If all the fuses check good and the jeep cranks but does'nt run you still need to check it just like any no start car. If it does'nt crank fix that first. Once cranking see that it's got spark. ( plug a plug wire and connect it to a spare plug laying on the head and chank the engine to see if theirs spark. With spark them cheak to see if it'll run with added fuel. Remove the air inlet hose on the throttle body slose a little gas it their and put the hose back on and crank it and if it starts you know it'll runn if it was getting fuel. Cheaking for fuel pump operation is next and the fuse from the pump can be on the fire wall on the passenger side. get under the jeep and put your ear against the gas tank and listen as someone turns the key one and if you hear the fuel pump come on you can say the pump works if not you need to find the fuel pump fuse and the realy that turns the pump on as this short to powercan back feed and blw relays and fuses. Most of the time theingtion module can blown on a back feed and the computer can too but the fuse often protects the computer. The computer is the box ( small cerial box size on the firewall on the passenger side) This part has to be programmed to work so a used one is no help as an old computer can'nt be reprogrammed ( to pervent thief) so a new computer has to be bought and programmed to match your car ( this is best left to a professional shop) I've even had other professional shops come to me to do this work cause you only get one chance at it and the other things i just told you about are much more likly to happen then computer failure and if the computer did fail some of these other problems have happened too and they'll need to be found.. iF THE FUSEABLE LINKS HAVE BEEN REPAIRED OR REPLACED IN THE PAST THEY CAN CAUSE THE COMPUTER TO FAIL AS THEY MIGHT NOT BLOW AND BLOW THE COMPUTER INSTAED.

1989 Jeep... | Answered on Jul 11, 2011

One possible explanation for this is that the crankshaft position sensor is going bad.

1989 Jeep... | Answered on Jul 04, 2011

Possibly fuel pressure regulator. Or the fuel pump is acting up.

1989 Jeep... | Answered on Jun 07, 2011

The fuel sending unit has a rhetrostat its a variable resitor ..As fuel is added the fuel lever mover along the rhetrostat and gives resitor signal to the fuel guage, the fuel gauge interpets this as level indicators to show on the gas tank.

1989 Jeep... | Answered on Apr 26, 2011

check the egr and the vacume lines to it,also check the cps(crank position sensor)and the connector

1989 Jeep... | Answered on Apr 15, 2011

sound like you need to find out if fuel or fir is droping out,install a fuel pressure tester and see if fuel psi drops when it dies??????

1989 Jeep... | Answered on Apr 11, 2011

is the transfercase in nuetral ? check that as that is the only thing that could stop a manual trans from moving trk unless the output shaft in trans broke but that only you will know.

1989 Jeep... | Answered on Apr 03, 2011

may want to do an oil change/filter on trans-then neccisary ajustments from a repair manual--if still persist then rebuild may be in order--trans can last 250 thou miles but heat is the killer

1989 Jeep... | Answered on Mar 25, 2011


It seems from the description of the problem that the fuse has blown. Please check the fuse box for a blown fuse and replace it with an exactly the same value.

1989 Jeep... | Answered on Mar 13, 2011

Upgrade to the 2000 Jeep Grand Cherokee its AWESOME

1989 Jeep... | Answered on Feb 28, 2011

try checking the 4 way switch and make sure it goes back to the original position. Sometimes these switched can get stuck in an inbetween state that causes this issue. hope this helps. its what i would check first

1989 Jeep... | Answered on Feb 28, 2011

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