Question about 1994 Jeep Grand Cherokee

1 Answer

94 Jeep Grand Cherokee heater coil has been replaced wont start

Just replaced the heater coil on my 94 Cherokee and now when started, it will run perfectly for about three seconds and just dies abruptly. The code 12, for PCM was disconnected within last 50 cycles is appearing. After consulting the instructions of a DIY procedure it said DO NOT DISCONNECT PCM. Well I did, and here I am, any suggestions?

Posted by on

  • tjkesling May 25, 2009

    I think we are on the right track with the security system but that procedure didn't work to reset it. It seems like it never is set because there are things i used to do to set it off and those will not set it off now.

  • tjkesling May 11, 2010

    that other user is me as well

×

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

If you have a security system, close all the doors and then lock the drivers door with the key, then unlock it. That should re-set the system. I've had the computer completely disconnected from mine several times (used it to check another vehicle) and I don't have security...it started and ran fine...only difference between the two is the security so I'd try that.

Posted on May 24, 2009

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,
a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

93 jeep grand cherokee wont start


Take 2 screws out of PCM and replace with shorter ones

Oct 23, 2012 | 1997 Jeep Grand Cherokee

2 Answers

94 grand cherokee cutsoff going down the road then won't start until it sets for a while


When it won't start someone will need to find out if you are dealing with a no-spark or no-fuel problem to proceed.
If the check engine light is on you should get the computer scanned for trouble codes.

Sep 04, 2012 | 1994 Jeep Grand Cherokee

1 Answer

Will not stay running like running out of gas i have a 94 jeep cherokee


i have a 94 Cherokee limited runs but when it gets hot it dies and will not start threw the winter i didn't have this problem now that it is hot out it will not stay running put a coil pack on cause it looked bad new fuel pump n filter radiator and thermostat we are at a loss the is plenty of fuel in the rail. it turns over but just will not start please anyone any ideas

Jul 16, 2011 | 1994 Jeep Grand Cherokee

1 Answer

94 jeep wont start after trying for long time a few days gose by and it suddenly starts replaced lot of parts still wont start only when it wants to.


Hello and welcome to FixYa!

Have you replaced the coil pack? The coil pack supplies current to the plugs. If the coil pack is faulty it tends not to give current to the plugs. One good reason why it won't run most of the time. I strongly suggest that you replace the coil pack and observe how it goes.

Hope this helps and thank you for using FixYa! Have a good one!

Apr 14, 2011 | 1994 Jeep Cherokee

2 Answers

I have a jeep grand cherokee will turn over but wont run


I suspect the crankshaft position sensor, giving the info you provided.

Jun 13, 2010 | 1995 Jeep Grand Cherokee

1 Answer

94 Jeep wont start running after 3 seconds.


It could be the security system or maybe a crank sensor.

Jan 04, 2010 | 1993 Jeep Grand Cherokee

1 Answer

93 Jeep Grand Cherokee Won't start


The crankshaft position sensor was seriously problematic in those old jeeps. It's located towards the top of the bell housing slightly to the driver's side I think.

Apr 15, 2009 | 1994 Jeep Grand Cherokee

1 Answer

93 jeep 4.0 not starting


check the ignition coil pick up

Mar 23, 2009 | 1993 Jeep Grand Cherokee

1 Answer

94 jeep grand cherokee missing after it gets warm


YOU NEED TO HAVE IT SCANNED TO ISOLATE WHICH CYL. PROBALY AN INJECTOR OR CONNECTOR OR CRANK SENSOR LEAD RUBBING INTAKE

Jan 25, 2009 | 1994 Jeep Grand Cherokee

Not finding what you are looking for?
1994 Jeep Grand Cherokee Logo

Related Topics:

286 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

75197 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7782 Answers

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

Answer questions

Manuals & User Guides

Loading...