Cranks with spark and fuel but won't start?

10

Asked by Dwinnings Dec 31, 2016 at 09:48 PM about the 1990 Jeep Wrangler STD

Question type: Maintenance & Repair

I gavec1990 jeep wrangler with 2.5 . While driving it
sputtered backfired and quit running. Have
checked for spark changed coul. Checked for fuel
getting fuel. Checked timing by aligning tdc and
looking at position of rotor under distributor.  
Correct alignment according to Haynes manual.
Have not checked compression. Just will not start.
What else could be wron?

6 Answers

188,355

Ok you say you have fuel but what is the pressure at rails should be about 38 pounds, did you ohm out the injectors they should be anywhere from 14.2 to 14.4 ohms and when you crank her you should around 5 volts to each. Which jeeps with high miles the chain could stretch and jump a tooth. The compression should be about 130 to 145.

3 people found this helpful.
10

Sorry it's been a,while now since my first question. So it is a throttle body and you can see the fuel pulse when cranked. Still haven't checked compression. I thought about the timing jumping a cog. But no way to adjust time since it is computer controled. When it stop running it really spit and sputtered and backfired then nothing. I changed the coil because the spark I was getting g looked a little orange. New coIL better looking spark but still no run.

1 people found this helpful.

I have a 1994 Jeep Wrangler that gets spark one min and the next min it don't I had is start and try to drive it and it would shut off and not start up again

10

My yj was running fine then it shut off all pressures are normal bubit will have spark for a little while then it's gone again replaced the ignition coil 4times and still does the same thing ...my jeep is my baby please help me

1 people found this helpful.

Just fixed problem with 97 Wrangler 2.5 which would crank, but not fire easily. I found I could get it started by only cranking for a short burst and stopping if it didn't fire up. Turned the key on after that for ~2 sec and tried again. Usually it would fire up after 3-4 times as long as I didn't hit the gas. Fuel pump was recently replaced so OK. Once it started up it would run OK, but would hesitate every once in a while. Turns out it was the crank position sensor. Strange that it didn't show any codes for it in the diagnostics.

Your Answer:

Wrangler

Looking for a Used Wrangler in your area?

CarGurus has 5,963 nationwide Wrangler listings starting at $6,500.

Postal Code:

CarGurus Experts

  • #1
    Mathew Wooldridge
    Reputation
    1,470
  • #2
    djtm0500
    Reputation
    1,280
  • #3
    Nickjeep
    Reputation
    1,250
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford Bronco
15 Great Deals out of 2,015 listings starting at $40,999
Used Ford F-150
314 Great Deals out of 13,742 listings starting at $3,800
Used Toyota 4Runner
26 Great Deals out of 542 listings starting at $9,999
Used Ford Mustang
37 Great Deals out of 1,639 listings starting at $8,800
Used Chevrolet Camaro
13 Great Deals out of 468 listings starting at $11,749

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.