Question about 1992 Jeep Wrangler

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I have a 92 jeep wrangler that won't run

It has no spark and no fuel pressure, but the fuel pump is good. could it be the computer? or control modual? it has the 4 banger in it.

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Sounds like the crank sensor. One way to check is while cranking watch the tach. If there is no movement then most likely it needs a crank sensor. If the sensor is good you will see a slight bounce in the tach.

Posted on Aug 13, 2008

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Crank sensor

Posted on May 11, 2009

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1990 jeep wrangler 2 carbureted fuel pump runs about a second ,fuel shoots out pline at back of carburetor, but none will spray inside


must be 4.2L engine the 2.5 is EFI TBI.(French EFI)
the 4.2 has computer controlled carb from H3LL
never ever buy a jeep like this, ever.
if hellbent on this bad car, to fix then buy the service manuals off fleabay.. (id not even hesitate there)

my guess is the carb is bad, what checks matters are.
fuel nozzles dead, is that.
1: fuel pressure at spec. not dribble tests. (no dribble yes, means pump dead) (using a real pressure gauge)
2: float level correct. ? if bowl dry bingo. !
3: jets not clogged, inside carb.
4; carb computer working (Tests stated in SM)
5: dead carb solenoids.

there is no worse car than a ECM controlled carb. horrid system.
ended in 91. as Chrysler took over..from AMC

join a real jeep forum and hear them moan, ?

2 fuses need to be good, F1 and F2, 1amp rated.
in the diode fuse assembly.
or the idle solenoid goes dead.

Mar 13, 2017 | 1990 Jeep Wrangler

1 Answer

NO SPARK TURNS OVER HAS FUEL PRESSURE


What jeep?
If its a wrangler with the carberator/Ford computer, replace computer. If you cannot find replacement, if the distributer has mechanical and vacuum advance on it, add an MSD with magnetic trigger and it will run great.

Feb 12, 2015 | Jeep Cars & Trucks

1 Answer

Will i get fire and gas if the computer is bad?


Great question. On a 1991 vehicle, that's all what the computer was about-engine management functions, that and some emission requirements. Turns the pump on, runs the injector circuits, and figures spark timing. Only has so many sensors, and so many output controllers. If your spark is good as in a blue, snapping spark, and the injectors are pulsing, and nothing wrong with the pump circuit (check your fuel pressure to verify), then the computer has that much going for it. Even so, a diagnostic flow chart could lead you down a long list of tests or things to check before it arrives at the computer as the possible problem. And when all is said and done, they will often say "Substitute a known good computer and see if problem persists."

Feb 06, 2014 | 1991 Jeep Wrangler

1 Answer

92 wrangler wont start


Jiggle the wire connectors going in to the computer under the hood -- first check battery cables/terminal connections at battery -- beleive it or not, connection could SEEM good because you get crank & lights, but if it's faulty, loose, engine won't start - computer requires good solid voltage flow.. next check a fusible link very close to the battery off of the positive cable. check fusible link carefully. this could cause your problem for sure.

Aug 10, 2012 | Jeep Cars & Trucks

1 Answer

After I drive my wrangler for about an hour it shuts off. There are no noises or sounds to indicate when this is going to happen. Also, the engine temp is normal when this happens. When I try to restart it...


BAD CRANK SENSOR ON TOP OF ****** HARD TO SEE FOLLOW WIRES, OR FUEL PRESSURE LOW BAD PUMP IN TANK..RENT TOOL AT AUTO ZONE HOOK UP TO FUEL RAIL SHOULD HAVE AT LEAST 45 50 PSI OF PRESSURE IF GOOD THEN CRANK SENSOR.WHEN IT DOESNT START CHECK FOR SPARK IF NO SPARK GOOD CHANCE ITS BAD.ITS ABOUT 45.00 BUCKS FOR NEW ONE AND ABOUT 35MIN TO PUT ON.GOOD LUCK

Aug 04, 2011 | 1998 Jeep Wrangler

2 Answers

Have a 1999 jeep wrangler sport. was having problems getting it to start and was told the engine needed replacing. we put a crate engine in, but the jeep still will not start. any ideas as to what could be...


I would look at the fuel delivery system including the fuel pump and fuel filter to make sure your getting the proper fuel pressure to the injectors.I would also check the power control module to see if that's operating properly.Some auto repair shops have machines to check the operation of the module.I hope this helps or maybe gives you an idea for a new starting point.

Feb 06, 2011 | 1999 Jeep Wrangler

2 Answers

97 jeep wrangler getting spark not fuel. I


Sounds good ninemil, I would also check for any bent or disconnected fuel lines that would restrict the fuel flow as well. I do not know if this has a fuel pump assembly but you should be able to hear it actuate on when the key is in the "on" position. How did it act before you shut it off? Was it harder to start? Make sure you buy a high quality pump (Carter) many of those cheaper brands will fail trust me.

Apr 07, 2010 | 1995 Jeep Wrangler

1 Answer

Crank, no start 98 wrangler 2.5l


crank sensor likely-may be distributor sensor but my 98 sport was crank sensor situated in bell housing timed by flywheel

Sep 15, 2009 | 1997 Jeep Wrangler

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