Question about Jeep Wrangler

1 Answer

95 Jeep wrangler no fuel no spark. Replaced crank sensor with dealer part

Posted by on

  • soberd Aug 31, 2010

    noticed there is no check engine light when you turn the key on.

  • soberd Sep 25, 2010

    Ended up being ECM . Was told common problem



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 2,272 Answers

No spark.This is caused by faulty 1) Spark plugs it self. 2) The crankshaft sensor faulty. 3) The camshaft sensor faulty. 4) The faulty coil pack or No power between coil to spark plugs. The spark plugs get power to spark from coil pack.If the connection between coil pack and spark plugs is short then it has to be checked and replaced. As you mentioned that you replace the crankshaft sensor.So ignore that but check out other possible causes for this problem. The cam sensor is in the distributor. And as you mentioned in your problem that "no fuel and no spark", So verify that you are getting 12V on the primary input wire while you are cranking, or alternatively put the voltmeter on the Fuel pump and see if it is getting 12V. If not, then the ASD is somehow not getting the message from the controller to stay 'on' which implies that the controller is not getting the crank and the cam signals. That is what the ASD is for, so that the fuel and spark will shut down in the case of an accident when the engine is no longer rotating. If you test the circuit for battery with the key in the On/Run position; then you only have about 3 seconds before the PCM times out. This is because the PCM needs a Cam & Crank shaft signal. If it does not see these then it de-energizes the ADS relay (automatic shutdown relay). The ADS relays powers the fuel pump relay. The relays will make a clunk when energized. So this ASD and fuel pump relay also needs to be checked.This relays can also be the cause of the problem'. Get someone to turn the ignition on while you listen/feel for the asd relay contacts switching over If it dosn't check you are getting 12V from to the ignition switch to the ASD coil contacts. The other side of the coil grounds through the computer. If the ASD relay switches contacts then you may not have a supply to the positive side of the ASD switched contacts. --------- You can also get the codes checked before replacing the part.Getting the codes detected first will help you to replace the exact faulty part.For how to detect the codes please click on the link directly:---- ----------------- Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Posted on Aug 29, 2010

  • raj somaiya
    raj somaiya Aug 31, 2010

    If in case there is no check engine light on the dash,then its confirmed that the problem is not related to car computer related.There is a voltage problem on spark plugs or coil pack.Also get the injectors and fuel pump checked.
    Get the fuel pressure tested.this will confirm the problem about fuel problem or coil/spark plug problem.
    Thanks for keeping updated with your query.



2 Suggested Answers

  • 2 Answers

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

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.

Posted on Jan 02, 2017

  • 14 Answers

SOURCE: 97 jeep wrangler getting spark not fuel. I

Sounds good ninemil, I would also check for any bent or disconnected fuel lines that would restrict the fuel flow as well. I do not know if this has a fuel pump assembly but you should be able to hear it actuate on when the key is in the "on" position. How did it act before you shut it off? Was it harder to start? Make sure you buy a high quality pump (Carter) many of those cheaper brands will fail trust me.

Posted on Apr 21, 2010

Testimonial: "It actually had no spark or fuel . It was the computer. Thanks for answering"

Add Your Answer

Uploading: 0%


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



Related Questions:

2 Answers

1995 jeep wrangler when cranking sometimes check eng. lite doesnt come on when this happens i have no spark.cranks good but no spark. when the check eng lite does come on when cranking then the jeep would...

Your ecu is in need of repair. Your jeep has what is known as the "delayed check engine light problem". Time has taken it's toll on some of your ecu's internal components, the ones that supply power the fuel and ignition circuit relays. The ecu is slow to supply power to the circuits in the morning, causing the delay. Your jeep may also have a bad crank sensor, which would cause the sudden shutdown while driving. Your ecu can be repaired or replaced, your choice. Both options are available on ebay.

Sep 30, 2011 | 1995 Jeep Wrangler

1 Answer

1992 yj 4.0, straight6, i replaced the 3 spd automatic with a nv3550 from 2003 rubicon and replaced the cps with new cps with new style inline plug. verified wiring with dealer. have the 8 volt supply from...

well i would think the crankshaft position sensor it bad/in wrong position/or the bell housing holds the crank sensor to far away from flywheel.if my memory is correct anything other than the jeep bellhousing wont work with the jeep fuel ign. system

Mar 22, 2010 | 1992 Jeep Wrangler

1 Answer

95 jeep wrangler cranks but won't start. replaced crank shaft sensor, coil, plugs. battery is good.

After you crank it for a while, take out one of the spark plugs. If it is dry then you have a fuel issue. If it is wet and smells like gas you have a spark issue. Find that out and report back and then we can get more specific.

Dec 19, 2009 | 1995 Jeep Wrangler

1 Answer

Crank, no start 98 wrangler 2.5l

crank sensor likely-may be distributor sensor but my 98 sport was crank sensor situated in bell housing timed by flywheel

Sep 15, 2009 | 1997 Jeep Wrangler

1 Answer

Jeep wrangler 6cyl won't start

check fuel pressure check crank sensor

Aug 11, 2009 | 1997 Jeep Wrangler

1 Answer

1989 jeep wrangler has no spark

if this vehicle has a crank positoin sensor, i would suspect that first before anything else. it would be mounted transmission bell housing toward top. very common poroblem with jeeps. does it have fuel pressure?

Nov 11, 2008 | 1989 Jeep Wrangler

2 Answers

I have a 92 jeep wrangler that won't run

Sounds like the crank sensor. One way to check is while cranking watch the tach. If there is no movement then most likely it needs a crank sensor. If the sensor is good you will see a slight bounce in the tach.

Aug 13, 2008 | 1992 Jeep Wrangler

2 Answers

Luging down

have the coil tested

Aug 08, 2008 | 1995 Jeep Wrangler

1 Answer


the temperature sensor is it connect its close to the thermostat check that out cheers pierre

Jun 29, 2008 | 1995 Jeep Wrangler

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

510 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts


Level 3 Expert

76070 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 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