1988 Jeep YJ engine dies out

Tiny
SLAPNASTY
  • MEMBER
  • 1988 JEEP WANGLER YJ
  • 4 CYL
  • 4WD
  • MANUAL
  • 165,000 MILES
I have a 1988 Wrangler 2.5 4 cylinder, When its first cranked up it will run perfectly for aprox 2 miles then the engine dies almost to a stop but always picks back up. This goes on while at mid throttle but not when the pedal is on the mat. I replaced the fuel filter, cleaned out the fuel return line and install a fuel pressure gauge. The gauge stays at 14psi even while the engine is shutting down. What can I look for? Thanks
Sunday, February 14th, 2010 AT 1:22 PM

6 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,055 POSTS
The fuel pressure is perfect. I checked it. Have you checked for vacuum leaks and the catylatic converter. Also, has the check engine light come on?

Let me know.

Joe
Was this
answer
helpful?
Yes
No
Sunday, February 14th, 2010 AT 11:57 PM
Tiny
SLAPNASTY
  • MEMBER
  • 4 POSTS
This year jeep has no check engine light or converter.
Was this
answer
helpful?
Yes
No
Monday, February 15th, 2010 AT 7:57 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,055 POSTS
I assure you it came with both. Is there a chance that someone has altered the vehicle? Also, did you find any vacuum leaks?
Was this
answer
helpful?
Yes
No
Monday, February 15th, 2010 AT 1:24 PM
Tiny
SLAPNASTY
  • MEMBER
  • 4 POSTS
No vacuum leak, no converter must have been taken off.
Was this
answer
helpful?
Yes
No
Monday, February 15th, 2010 AT 7:37 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,055 POSTS
WIthout the check engine, it becomes a guessing game. If vacuum is good and fuel pressure is good, I feel it deals with either a idle air control valve, throttle position sensor, or even the EGR. My other concern is the converter missing. The O2 sensor can't work properly without it. However, I assusme it ran good before the problem started. Have you checked the egr to see if it is carboned?
Was this
answer
helpful?
Yes
No
Monday, February 15th, 2010 AT 9:43 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,055 POSTS
Have you had a chance to check?
Was this
answer
helpful?
Yes
No
Wednesday, February 24th, 2010 AT 7:57 AM

Please login or register to post a reply.

Related Engine Stall While Driving Content

Is it Safe to Drive Check Engine Light?
VIDEO
Is it Safe to Drive Check Engine Light?
In­struc­tional re­pair video
Engine Stalls While Driving
GUIDE
Engine Stalls While Driving
An en­gine that stalls while dri­ving and then starts back up again, ei­ther im­me­di­ately or af­ter a short time is dif­fer­ent from an en­gine that just wont start or if the...
VIEW MORE