Question about 1993 Jeep Grand Cherokee

3 Answers

Coil does not get power I've changed coil but still nothing i don't know where to look for the problem the engine does turn over just no spark

Posted by on

Ad

3 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers

Based on my experience with many of these crank/no starts with Grand Cherokees, I would say it is the crank position sensor. I have replaced many on these vehicles and it is in an unpleasant location. If the PCM doesn't see the crank signal from the CPS, it will shut down the ASD(Automatic shutdown) relay causing a no start condition because it cuts power to the ignition coil, fuel pump and injectors. Check power at the coil and one of the fuel injectors. If you don't have power at both, the ASD is shutting both down because of the PCM seeing something it doesn't like.

Usually on the 96-up vehicles, I have a scantool connected, I crank the engine and look at the live data related to engine rpms. If the CPS is working, I will see rpms show up during cranking. On a 93, you will have use a multimeter at the connector. The CPS is located on the top, back of the transmission bellhousing on the driver-side, but the harness runs along the back across to the passenger side.

Posted on Jun 23, 2014

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Jeep Master
  • 21,873 Answers

You may need a shop manual for the wiring diagrams and test procedures.
The coil is powered from the ASD relay on the dark green and orange wire. It is grounded from the computer.

Posted on Jan 13, 2013

Ad
  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that got 5 achievements.

    Spread the Word:

    An expert who has shared 5 answers on their Facebook wall.

    Night Owl:

    An expert who has answered 10 or more questions between 12 midnight and 6am on the same day.

  • Contributor
  • 29 Answers

Check ignition moudle

Posted on Jan 13, 2013

6 Suggested Answers

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

  • 108 Answers

SOURCE: no spark at coil

check ignition pick-up coil and ignition module

Posted on Mar 31, 2009

  • 181 Answers

SOURCE: 1996 jeep grand Cherokee 4.0L no power at coil got

TRY THE PLUGS ,CAP&ROTOR CHANGE THE FUEL FILTER,STILL NO START,THEN CHECK THE FUEL FILTER NOW, IT SHOULD BE WET,IF NOT THEN YOUR FUEL PUMP IS NOT WORKING

Posted on Oct 28, 2009

jturcotte
  • 8531 Answers

SOURCE: jeep 2.5L automatic, as I turn the key to start I

Check the wire from the solenoid to the coil. Should be a red wire with a stripe on the second small terminal of the solenoid.


jturcotte_2347.gif

Posted on Sep 30, 2011

Testimonial: "Jeff I really thank you for helping me with this, I do this for a living and this has me stumped, THANK YOU."

  • 1207 Answers

SOURCE: won't start. Is it the ecu?

also may be battery, stater or ignition. the ms509 scanner can help you to know where is the problem.

Posted on Aug 14, 2012

  • 8 Answers

SOURCE: Jeep 95 wrangler power to coil no spark changed wires cap coil need help never gave me a problem before won't sart checked ground everything looks good

Remove distributor cap have someone tap the key while you watch the rotor inside the distributor if it does not move that is the problem then it could be the gear shear pin has broke or cam is not turning distributor.

Posted on Sep 23, 2012

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

1989 VW Golf wont's start. Coil loses power, no spark


You are describing a bad ignition switch. These fail in such a way that the voltage to the ignition fails while in the crank position.

Apr 25, 2017 | 2000 Volkswagen Golf

1 Answer

My 1995 mitsu eclipse is sputtering and has trouble staying on when I turn it on for the first time in more than 5 hrs. It also stalls and throws me an oil light. I've changed the spark plugs (which...


Coil battery circuit may be loose or corroded causing the recurring code/light . Which code number are you getting ? Have you cleaned the throttle body and IAC as that can cause idle issues .

Apr 10, 2017 | Cars & Trucks

1 Answer

I changed the fuel filter on my car. It started once and then wouldn't start again. The battery has been recharges and the starter changed out. I don't think it's the passlock...


does it crank and not start. do you know if gas is going to the engine. is there a buzzing noise in the gas tank when you turn the key.do you have spark to the coil

Nov 08, 2012 | 1996 Oldsmobile Achieva

2 Answers

Won't start


How about corroded battery cables (internal)

Fusible Link wiring corroded & open circuit,does
everything electrical work except the starting circuit?

Turn key & have power to starter solenoid ?
Neutral Switch !
Ignition Switch !

Tough to guess without wiring diagrams,
to see where to start testing

Can't fix what you don't know you have

Oct 02, 2012 | 1990 Ford F150

1 Answer

My 2006 nissan serena was going into safe mode because the transmission was constantly over heating. I've changed sensors and even installed an external cooler but nothing worked. So Iwould like


Why not diagnose the original overheating issue
in the beginning ?

I do like the extra cooler, but there a thousands of
similar vehicles on the road, with no issues,so why
is your a problem?

Sensors don't fix anything or cause overheating
They report different trans component speeds
to the pcm/ecm

Aug 10, 2012 | Cars & Trucks

1 Answer

Oldsmobile alero intermittant prime


The way the system works is fairly simple.
The computer grounds the pump relay for 3 or 4 seconds when the key switch is turned on. If the engine does not produce oil pressure the pump power is cut.
If you have changed the relay and the problem persists, I would expect the problem to be in the computer.
The pass key system prevents the starter and fuel injectors from working. I don't think it controls the fuel pump relay.
Did you mean to say you had to wait 10 min before turning the key switch on a second time, or did you leave the key switch on for 10 min ?
You could probably use a low voltage tester or VOM to check the signal from the ECM, but the tool you use may cause the relay to come on in place of the signal.
The other three circuits are power from the battery, power from the key switch, and the line out to the pump. One of those could be faulty, especially the one from the key switch. But other things should be not coming on too if that were true.

Jul 23, 2012 | 2001 Oldsmobile Alero

1 Answer

My 2001 GMC Safari has been running rough for a couple weeks now.. I've replaced spark plugs, spark plugs wires, coil, radiator, cap and rotor and checked the egr valve, check the maf sensor. Nothing...


Look and make sure your computer is good! PCM could be failing you! Injectors don't really go bad! Also look at you fuel pressure make sure it's strong!

Sep 05, 2011 | GMC Safari Cars & Trucks

1 Answer

I have a 2002 VW Jetta, it has a 2.0 motor. I've


REPLACE THE Ignition coil under $300 will fix it I just did it the clue is when it rains the coil has cracks in it and water shorts it out.

Jul 04, 2011 | 2002 Volkswagen Jetta TDI

1 Answer

95 Jeep cherokee Limited - i turn the key and i get nothing...I was thinking it was the battery but after a quick batter swap...still nothing when i turn the key......wonder if it is the replay,starter or...


If you don't even get a click from the starter solenoid, AND have power to it. It is most likely the starter solenoid.

But first check your fuses and make sure that you don't have something easy to replace.

Good luck! At least you didn't have to change your engine - after going through changing the starter the week before.

Jun 20, 2011 | Jeep Cherokee Cars & Trucks

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

197 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

76682 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 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...