Question about 1993 Jeep Grand Cherokee

2 Answers

93 jeep cherokee-while cruising down interstate jeep sudenly started jerking, stalling, and lose of power. I pulled over to station. checked oil level, pressure, temp, alt output--all ok. jeep will start and idle but bogs down when accelorator applied. I visually checked fuel pump relay(no burn marks on terminal or clicking noises), replaced fuel filter. also noticed O2 senser is broken at wire connection but cant imagine would cause such power lose. jeep starts and idles but same problem as above. I can here the fuel pump running. advise greatly appreciated

Posted by on

  • fullthrot863 Oct 27, 2010

    I have mow also replaced MAP sensor, no help. My 93 cherokee idles fine, but falls on its face when throttle applied. If I baby the throttle enough to see 3000rpms, it runs great.

    Please help.

×

Ad

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Master:

    An expert who has achieved Level 3.

  • Master
  • 364 Answers

Could be faulty ignition. If a connection is loose then could fail at particular vibrations.

Posted on Apr 28, 2017

Ad

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Jeep Master
  • 5,274 Answers

I don't know engine size? The fuel pressures I found was 31--39 psi, 92--95. I would use a gage and check proper fuel pressure.
How long since over-all tune-up? Any applicable trouble codes?

Posted on Apr 28, 2017

Ad

5 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Anonymous

  • 110 Answers

SOURCE: Jeep Cherokee Sport 1993 stalls after start up fuel pump issues

good morning to you and welcome to fixya.com. hope we can get you fixed here. just a couple of questions first? have you changed the fuel pump yet? if so where did you buy the pump from? your pump is actually building up to much resistence and is unable to overcome it in turn no power is getting to pump as needed. i have a grand cherokee with 230k so i love hearing that you have that many miles. lets keep you rolling. let me know and ill help you out.

Posted on Mar 07, 2009

Anonymous

  • 54 Answers

SOURCE: 89 laredo 4.0 Starts, Idles but no power

Have you checked the fuel pressure while pressing the gas pedal? Pressure should stay above 40PSI

Posted on Jul 29, 2009

simidrm45844

  • 159 Answers

SOURCE: 2000 Jeep Grand cherokee Laredo

sounds alot the the pcm it controls the fuel pump and ign system but the anti theft would keep it from starting because the key has a transponder in it programmed for that vehicle and that would kill all ign if triggered

Posted on Sep 27, 2009

Richard Scordino

  • 6982 Answers

SOURCE: 93 jeep grand cherokee. Starts and idles ok.

Being injected, the control system varies fuel quantity and does not directly regulate air flow. Therefore, having black soot on plugs tells you that there is too much fuel going into the engine. The O2 sensor tends to react to, more than control that. Missing can be the result of plug fouling. Backfire may be the result of a too rich fuel mix permitting unburned fuel to enter the hot exhaust where it re-ignites.
Where I would look first in your case is to the manifold air temp sending unit and the coolant temp sender as well. If either or both are out of range the computer may "think" it is running a cold engine and therefore adding additional fuel for cold start up,and not switching to normal run mode when the engine reaches operating temp. Once the plugs foul the engine will continue to run poorly regardless of other conditions. You can test each component individually using either chilton or haynes manual as a guide. You will need a decent digital multi-meter to do the tests.
You can also have a code test done at most major parts stores, but often if sensors are not bad enough to set a code but together are causing a problem, you may not see anything except the O2 sensor.
There are other possible causes such as worn out injectors, but most often that won't happen in all cylinders at the same time. Do testing first, correct whatever you find and then make sure plugs are clean. If after running, the O2 sensor continues to register a fault, then replace it.
Good luck...any further questions are welcome and don't forget to rate answers!!!

Posted on Feb 22, 2010

Testimonial: "Thanks. We will try it."

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

While driving my Jeep will suddenly jerk and lose power for a few seconds then everything is fine. I was thinking some kind of sensor. Any ideas?


If everything is okay before and after each icidence I would suspect a fuel supply problem. Are filter and pipes all clear of detritus? Does it happen in corners, whilst accelerating or decelerating? Does it happen whilst cruising? When engine is hot or cold. Which engine do you have. Please add detail and resubmit the query

Jun 11, 2015 | 2000 Jeep Cherokee

1 Answer

2005 Hyundai Tucson is jerking


check your battery voltage a weak battery can minic a faulty fuel pump. your voltage should be 11.6- 14 volts

Oct 30, 2014 | 2005 Hyundai Tucson

1 Answer

My jeep won't go when I put it in gear


transmission failure.
check levels, using the operators guide, do not guess.
do not check transmission levels like and engine,.

Feb 15, 2014 | 2005 Jeep Liberty Sport

1 Answer

Have 93 Cherokee Sport with choking problem


Do a major tune up,and use a good fuel injector clean like lucas fuel treatment.If this was helpful,please rate thank you.

Jul 21, 2010 | 1993 Jeep Cherokee Country

1 Answer

The original motor in my 93 grand cherokee 5.2L seized in June. I bought a good junk yard 5.2L motor from a 98 Grand Cherokee and swapped over the 93 intake and all related electronics. The engine is back...


are you sure those intakes are inter changeable?
if you still have the 98 intake and your 93 block ,sit there and look for any differences in holes or hole locations.
another way to check is when it is running remove the oil fill cap and see if it stalls or picks up speed.

Nov 21, 2009 | 1993 Jeep Grand Cherokee

1 Answer

I have a 2002 Grand Cherokee 4.0 cruise control cutting out


it is hard to know without scanning for codes, do you have a way to scan? If not parts stores usually do it for free.

Jun 19, 2009 | 2002 Jeep Grand Cherokee

1 Answer

Jeep Grand Cherokee engine stall


Yes, but my problem came in a 1995 wrangler 4.0 liter. It is the camshaft sensor unit. Mine was in the distributor assembly. Get one I can almost garauntee that is what it is. I cannot however garauntee my spelling! Hope this helps!

Jun 01, 2009 | 1991 Jeep Cherokee Briarwood

2 Answers

Grand cherokee jerking movement


I have a 2000 Grand Jeep Cherokee, I was driving along the freeway maybe doing about 60mph when my jeep suddenly jerked, when it did this my emissions light came on. I pulled over in a parking lot checked all my fluids oil, transmission fluid, everything seemed okay, as I was getting back on the freeway I watched the R PMs that was fine and my emission light went off. After driving for about 5 minutes it did it again and my emissions light came back on, I did notice this time it seemed to be in the rear where this Jerking/ Bucking came from can anyone help??? PLEASE

Mar 06, 2009 | 2000 Jeep Grand Cherokee

1 Answer

1999 Jeep Grand Cherokee Laredo won't run


if ur jeep has central lockin lock it and then unlock it ..........she might b sucking air inn

Feb 26, 2009 | 1999 Jeep Grand Cherokee

1 Answer

When it gets warm it stalls


Check Crank Sensor and Cam Sensor .. Sometimes Oil Cover Cranksensor will Stop Cranksensor from Readig .. Do you have an Oil Leak??

Jan 07, 2009 | 1998 Jeep Cherokee

Not finding what you are looking for?
1993 Jeep Grand Cherokee Logo

Related Topics:

77 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

Marvin
Marvin

Level 3 Expert

85206 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22484 Answers

Jonah Oneal

Level 3 Expert

14092 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...