Question about 1986 Jeep Cherokee

1 Answer

I have no spark from the coil to the sparkplugs,no power to the fuel injecters,and no power to the fuel pump.All gauges come on and it turns over but will not start... 8/89 Jeep Cherokee Limited 4.0L A/T P/W P/Seats and air conditioning.I'm going crazy please tell me what the problem is.

Posted by on

  • ROB ZWETTLER Aug 27, 2010

    IT IS A 1990 ( 8/89) NOT A 1986 WITH NO POWER TO THE COIL,FUEL INJECTORS OR THE FEUL PUMP.

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 146 Answers

Check your main fuses and fusible links , as well as the pcm
fuse located in the fuse block .
Be sure all your grounds are properly tightened.

Posted on Aug 27, 2010

  • JOHN ALBURY
    JOHN ALBURY Aug 27, 2010

    is /has your check engine light been on?

×

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:

1 Answer

Why is there no spark to sparkplugs on a 1970 oldsmobile 350 rocket


Do you have power to the + side of the coil, and will the coil fire when you remove the ground connection ?

Sep 07, 2014 | Cars & Trucks

1 Answer

My car will not start it cranks but will not turn on. So far I have changed the crank sensor I also have no spark to coil packs or spark plugs Fuel pump does not turn on when I turn the key. What is the...


Begin by checking fuses. Ignition, efi, fuel pump fuses. When key turned to on, do the warning lights and gauges work? That verifies switch has power and is sending power out. With key on, the coil primary wire to coil packs should have voltage.

No spark and no gas? Fuel pump fuse good? I think I would use a test light or multimeter to check that fuel pump fuse terminal has power to it with key on. If that's good, pull connector off at fuel tank and check for a voltage signal on fuel pump wire when the engine is cranking-if good signal, fuel pump needs taken out for replacement or inspection. If no signal check that fuel pump relay has power to it. With key off, pull the relay and check that one terminal has power to it-the feed wire for the pump. If no power signal at all, check maxi fuses or fusible links for a failure.

Sep 04, 2013 | Cars & Trucks

3 Answers

1988 buick regal won't start


when you turn the key to the start positoin do you hear the fuel. and do you know if you got any spark?https://www.facebook.com/TedsRepairs link to my garage

Dec 01, 2012 | 1988 Buick Regal

1 Answer

Welli have towncontry i change computer but dont start and the inyector dont have electricity to star the car


Is the computer powered up? Does your check engine light come on when you turn the key to on?
If that's o.k., check fuel pump operation. Do you hear the pump come on to prime the fuel system when you first turn the key to on? It should turn on for about 2 seconds, and then stop again until the engine is being cranked, at which time the pump comes back on. You can't hear the pump when engine is cranking or running, but you could hear it first come on to prime the system. There may be a schrader valve-a test port- on top of engine on the fuel rail. If you find it, take the cap off, and press down the valve-gas should shoot up if the pump is working and getting fuel to the engine.
Now if the computer is powered and the pump is getting gas to the engine, and still no start, you need to check your ignition system by checking for spark at one of the sparkplugs. Pull a plug wire off a plug, pull the sparkplug out, reattach the plug wire to the plug, and lay the sparkplug on a metal part of the engine, so the sparkplug threads are touching metal (grounding it). Now have someone crank the engine over while you watch the plug for a strong blue spark there. You need to see a blue, snapping spark to know your ignition system is good. An orange spark is not good-too weak. If no spark, or not consistent, you have a problem in the ignition system, and will have to diagnose and fix that.
If all is good so far, you may need to check the fuel injection system. Start by pulling one injector connector off, and check for power on one of the two wires going to the injector (the other wire is the injector ground wire), with the key in the on position. If no power to the injector with key on, the injector drive circuit has failed. If one wire does have power, post back to me for how to test the injector ground circuit-very easy with a testlight.
Good luck.

Nov 22, 2012 | Cars & Trucks

2 Answers

Engine wont start, turning over but not striking ? Have engine check light on. sudden failer had moved car no prob 1 hour earlier.


Check the fuel pressure, check ignition fuses and injecter fuses.Scan for codes, may be a timing belt bad.

Feb 26, 2011 | 2000 Nissan Maxima

2 Answers

Cranks but does not fire. put gas into intake still no start.


First off check and verify you have sufficient fuel pressure with a fuel gauge if the fuel pressure is good next verify you have spark remove one of the sparkplugs and instert a spark tester into the sparkplug wire and crank the engine around and observe that there is spark, if theres spark remove all spark plugs and perform a compression test the compression should be no lower then 180 PSI for that engine, next if theres no spark unplug the 4 wire connector from the coil pack and with an ohm meter ohm across the purple and yellow wire the resistance of the crankshaft position sensor should be between 700 and 900 OHMs if its not replace the crankshaft posistion sensor its located behind the engine in back of the starter, if you dont have fuel pressure check the fuel pump relay and fuse, if they both are okay then the pump is probably bad and you will have to drop the gas tank to access the pump.

Dec 07, 2010 | 1998 Saturn SW

2 Answers

My ram 1500 will turn over but not run


you need to determine if you have good spark at plugs while turning the engine over,if you do then you need to find out how much fuel pressure your pump is putting out,you can check this with a fuel pressure gauge and check it at the reed valve on the fuel rail,turn the key on and the pump will operate for five seconds look at your gauge you will need at least 55psi to fire the engine,if you don't you can try the fuel filter first.

Dec 26, 2009 | 1999 Dodge Ram

2 Answers

Cranks but wont start


Engine Cranks But Will Not Start

For an engine to run, you need three things to happen inside the engine. Compression, fuel and ignition, without any one of these components the engine will not run.
Basic Checks:

A. Test Fuses. Test both under hood power distribution center and the fuse panel under dash. This is done with a test light tool. The test light should illuminate on both sides of the fuse, if not the fuse has failed and needs to be replaced.
B. Testing Fuel Pressure Test for proper fuel pressure with a test gauge on the fuel rail, most throttle body injection cars (TBI) are between 13 psi and 17 psi. and most (DPI) direct port inject systems are between 40 psi and 55 psi. If no or little fuel pressure is observed and there is 12 volt power present the fuel pump, the fuel pump needs replacing.
C. Checking Timing Belt Test for compression by removing a spark plug and insert a compression gauge. Crank the engine over about 5 seconds the gauge should read between 125 psi and 165 psi, if no compression is observed remove front engine cover to inspect timing belt or chain. Crank engine to observe cam rotation, if the cam does not rotate the timing belt or chain has failed. (note: if the timing belt drives the water pump it is best to replace the water pump at this time)
D. Test for Injector Pulse Remove injector connector to insert injector test light (node) or volt meter. Observe light flash or gauge pulse while cranking. If light/voltmeter doesn't respond, an ignition distributor/crank angle sensor (CKS) or an ignition module is most likely your problem.
E. Test for Ignition Spark Remove spark plug wire, insert an extra spark plug into end of wire, rest spark plug next to a ground source then crank engine. You should observe a blue spark between the spark plug gap and ground source. If no spark is observed, an ignition coil, ignition rotor or spark plug wires might have failed. (always keep hands away from engine when cranking)

Jul 14, 2008 | Hyundai Motor 2002 Sonata

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

Related Topics:

94 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts

yadayada
yadayada

Level 3 Expert

74945 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7697 Answers

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

Answer questions

Manuals & User Guides

Loading...