Question about 1999 Jeep Grand Cherokee

1 Answer

95 Jeep Grand Cherokee 5.2 Check engine came on last week, began running rough. Found number six fuel injector wire was partially cut thru because of heater hose rubbing on it. Repaired no. six injector harness. Still no voltage at harness. Code 27 coming from computor. I am thinking maybe pcm was damaged because of short at injector harness. Injector is good, I tested it with harness from neighboring harness. Please help. Thank you.

Posted by on

Ad

1 Answer

  • 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
  • 6,982 Answers

You need to begin tracing harness wire that has no power, back to the computer. If you can locate the wire at the computer, first check it there. If no signal from the computer at the pin, then change computer.

Posted on Jun 17, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

3 Answers

I have a99 jeep sport Cherokee. I got fuel pump and filter put in last week,because it wouldn't start. The jeep still has a hard time starting. What could it be?


check your Park/neutral position switch (automatic transmission), it may need cleaning or repacement
iiiiiiii
it may need cleaning

May 21, 2012 | 1999 Jeep Cherokee

1 Answer

Rough idle random cylinder misfire


misfires are more from problem injectors, low fuel pressure or injector wiring than from plugs
have a fuel pressure test done to check for problem pressure regulator , problem fuel pump , blocked m/dirty filter
one other area of concern is the EVAP system where the purge valve doesn't vent the tank properly and causes low fuel flow rates

May 27, 2017 | 1999 Jeep Grand Cherokee

2 Answers

My 1998 jeep grand cherokee will cut on and 5 seconds later, it will cut off??? any suggestions? and i looked on some forums and thought it could be the O2 sensor or crankshaft sensor?


It is also a possibility. Check if you have rough idling when you do get the engine running and check if can keep it running if you step on the gas. You may have a dirty idle air control valve. Check also for loose vacuum lines and wiring as well. If you have a spare carb cleaner, have it sprayed in to the intake of the engine while revving. There might be just dirt in the system or the MAF sensor.

If you can, have a scanner connected to the car. It may have errors stored in its computer.

Aug 22, 2011 | 1998 Jeep Grand Cherokee

2 Answers

My wife's 2002 Jeep Grand Cherokee Laredo starts shaking when the car is turned on. The sound of the car is different, almost like put put put kind of sound instead of a normal smooth engine sound. When I...


You probably have a dead cylinder. like if you have a six cylinder it might be running on only five. could be because of a bad spark plug, ignition coil, fuel injector, plug wire. you should get it checked out.

Nov 03, 2009 | 2002 Jeep Grand Cherokee

1 Answer

Engine runs fine when started, put it in reverse and it starts to


probably neither. You should do a compression check, and check your transmission fluid for dicoloration and metal shavings.

Sep 17, 2009 | 2004 Jeep Grand Cherokee

1 Answer

Very rough idle on 2002 Jeep Grand Cherokee Limited Edition V8


If you haven't changed the plugs or had the fuel system cleaned, now would be a good time to do it. The number 1 culprit for rough idles is dirty injectors or plugs. You can try an injector cleaner in a can (or bottle) for under $10 and see if it helps, and then work from there. If there isn't any improvement then if you are able to, check the plugs for any gunky buildup and if you find a bad plug, make sure you replace them all (or have them replaced) at the same time.

Aug 03, 2009 | 1996 Jeep Grand Cherokee

1 Answer

Error Code 27 for 1994 Jeep


adding If you are getting correct pulses to the injectors, you can try 3oz of acetone and 1oz of marvel oil to each 10 gal of gas your fuel for the next few fill-ups...this will safely clean injector nozzles, providing they aren't worn out or internally binding.Your injectors are triggered by the computer, so check the plugs and wiring to make sure nothing is loose or shorting. There is much more to this, but it's a good place to begin.

May 30, 2009 | 1994 Jeep Grand Cherokee

1 Answer

03 grand cherokee check engine lite


I have replaced the fuel rail on a couple of these for misfire codes that kept resurfacing it seemed to cure them.

Jan 06, 2009 | 2003 Jeep Grand Cherokee

Not finding what you are looking for?
1999 Jeep Grand Cherokee Logo

245 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

Marvin
Marvin

Level 3 Expert

81285 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Kevin Daniels

Level 3 Expert

1455 Answers

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

Answer questions

Manuals & User Guides

Loading...