Question about Jeep Cherokee

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Engine will not start

Starter works, battery voltage is 12.8 volts dc, engine is getting fuel, new coil pack, ignition module test ok, but engine will not start.

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  • Dave  C
    Dave C May 11, 2010

    Replace the crankshaft sensor that is mounted at the back of the engine on top of the bellhousing on the drivers side

  • gangstagring May 11, 2010

    will it turn over. try taking a wrench and turning the cam shaft

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  • Master
  • 710 Answers

What year is your cherokee? Have you checked all fuses? Some of these vehicles have PCM's that go bad.(powertrain control modules)

Posted on Apr 22, 2009

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3 Answers

Why my car is not getting any voltage to or from the coil-pack to the spark plugs.The battery is new over 180,000 miles,starter is good,headlights burn bright,fuel pump is engaging,ignition is...


Possible ignition switch on steering column. Possible short in ignition coil. Do you have a schematic diagram for 95 Buick? Do you have an ohm meter? I need more information. I am assuming it will not start up or is the car miss firing?? Any check engine light indications?

Mar 18, 2015 | 1995 Buick LeSabre

2 Answers

93 Honda Accord LX; no spark; will not start; has great fuel pressure; new distributor; new coil; voltage 11.8 into the coil but no spark???? any solutions?


Try removing the ignition module, usually located right under the coil pack, and having it tested at Auto Zone or Advance Auto Parts.

Jun 04, 2011 | 1993 Honda Accord

1 Answer

95 astro has no spark to the coil what next


Try this tips:
1. Check the battery voltage at the battery with the digital volt/ohm meter. Set the meter to "Volts D/C" and touch the black meter lead to the negative battery post and the red meter lead to the positive post. A fully charged battery will measure 12.7 volts or more. A measurement of 12.5 volts is considered discharged, and the battery should be charged before any further testing. Any measurement below 11 volts indicates a severely discharged battery--the battery is most likely damaged and should be replaced. If the battery measures above 12.7 volts, proceed to the next step.

2. Check the starter for battery voltage by touching the red (positive) meter lead to the battery cable terminal on the back of the starter and the black (negative) lead to the chassis. The voltage reading should be approximately the same as the measurement at the battery. If the reading is lower than battery voltage, check for bad connections at the cables on the battery and the starter or ground cable.

Check for ignition switch signal at the purple wire on the back of the starter. When the key is turned to the "Start" position this wire should measure battery voltage. If the reading is less than battery voltage, or zero volts, check the fusible links (orange wires) on the back of the starter. If the fusible links are intact and not burned or broken, replace the ignition switch. If battery voltage is present at the purple wire, and the starter doesn't turn, replace the starter. If the voltage measurements at the starter are correct, and the starter cranks the engine over when the key is turned to the start position, proceed to the next step.

3. Remove the air duct attached to the throttle body, and spray a liberal amount of the carburetor spray into the throttle body. Replace the hose, and try to start the engine. If the engine starts, the fuel pump is not supplying fuel or the ignition module is not pulsing the injectors. Check the fuel pump fuse located in the under-hood fuse block. If it is good, check for power at the fuel pump electrical connector located near the rear of the fuel tank on the driver's side of the van. In the Chevy Astro van, power is supplied to the fuel pump by the the gray wire on the electrical connector when the engine is being cranked. If power is supplied, hitting the fuel tank with the flat side of a hammer while someone else is turning the ignition key to start will sometimes bump the fuel pump enough to allow it to start. If the fuel pump checks good, proceed to the next step.

4. Check for spark. Disconnect the coil wire at the ignition coil, and try to start the engine. If no spark occurs, replace the coil and ignition module. If a strong spark occurs, plug the wire back in, and remove a spark plug wire from a spark plug and repeat the test. If a spark is not present, replace the spark plug wires, and distributor cap and rotor.


Keep us updated.

Jan 12, 2011 | 1995 Chevrolet Astro

1 Answer

Crank, won't start problem. I checked the spark plugs on Jeep 98. Looks good. Could it be the crank sensor or starter coil?


Yes it is very much possible.But there are many other possibilities too,including starter and spark plugs issue.

If your engine cranks normally but will not start because it has no spark, or it stalls and won't restart because it has no spark.

You can also do a test to confirm the problem .The procedure to do the test is as follows:---

If your engine has spark plug wires, disconnect one of the plug wires from a spark plug and place the end of the wire near a metal surface on the engine. Then insert a small Phillips screwdriver into the end of the wire (the plug boot), or a small bolt or nail to provide a conductive path. Then crank the engine and look for a spark to jump from the screwdriver, bolt or nail in the end of the plug wire to the engine. If you do not see a spark, there is an ignition problem.

OR-----------

If your engine has a coil-on-plug ignition system with no plug wires, In that case remove one of the coils from the spark plug and insert an old spark plug, a spark plug tester or a screwdriver into the end of the coil. Ground the spark plug or plug tester to the engine, then crank the engine and look for a spark. No spark indicates an ignition problem.If the engine has no spark, check for voltage at the coil positive terminal when the ignition key is on. If NO voltage, then problem is on the trigger side of the coil (pickup, crank sensor, ignition module or primary wiring circuit).

But If there is NO voltage at the coil itself, then in that case the problem is on the supply side (the ignition switch or ignition wiring circuit).-----------------

Jeep cranks but no start:----------------

A jeep that cranks over but doesn't start, in many cases will be due to a bad fuel pump, a broken timing belt, an inoperative cam sensor or crank sensor. Also these problems are related to faulty spark plug. Check the spark at spark plugs when you start the jeep. Do you notice any spark. Actually you should see. If in case there is no spark then it's a spark plug problem. Also the coil pack gives power to spark plug. So check the voltage at coil pack. It will show 12 volt. If there is no voltage noticed at coil pack then its faulty coil pack that has to be replaced. If all the possible options checked out ok then check the car starter. The starter gets power from battery to start the jeep. If the starter is faulty then it will not let the car to start. Also check and confirm that there is fuel in the jeep. If its very low fuel then in some cases this causes the problem. Also check and confirm that fuel pump is functioning properly and the fuel filter is not clogged. One of the easiest ways to check for a fuel pump related problem is to spray a little starting fluid into the air intake while trying to start the jeep. If the car starts momentarily, then there's a good chance the fuel pump is not working or the jeep is out of gas. You can also listen for the fuel pump's humming sound when the key is first turned on. Also if a inoperative fuel pump is suspected, a good technician will always check to verify there is power and ground being supplied to the pump, to eliminate the possibility of a bad relay or electrical issue. Fuel pressure can be checked with a pressure gauge and if there is pressure, pulse can be checked at the fuel injectors in several ways including the most common, with the use of noid lights. If the injectors don't have pulse the engine won't start. ---------- This troubleshooting tips will help you to solve the problem. Thanks. Helpmech.

Jan 07, 2011 | Jeep Cherokee Cars & Trucks

1 Answer

Car will not start. replaced the battery and will not turn over


Engine wont start.If car battery voltage is low then engine wont start.The fully charged battery will show 12 volt.But if battery is showing 12 volt.Then check the battery to starter connection.If that is also checked ok then check voltage for starter itself.The starter is also a 12 volt part.But if the starter is faulty then it has to be replaced.If you start the car but if its not starting then its starter fault.But if the car makes cranking noise but its not getting turn over then there are many other possibilities.A car that cranks over but doesn't start, in many cases will be due to a bad fuel pump, a broken timing belt, an inoperative cam sensor or crank sensor. Also these problems are related to faulty spark plug. Check the spark at spark plugs when you start the car. Do you notice any spark. Actually you should see. If in case there is no spark then it's a spark plug problem. Also the coil pack gives power to spark plug. So check the voltage at coil pack. It will show 12 volt. If there is no voltage noticed at coil pack then its faulty coil pack that has to be replaced. If all the possible options checked out ok then check the car starter. The starter gets power from battery to start the car. If the starter is faulty then it will not let the car to start. Also check and confirm that there is fuel in the car. If its very low fuel then in some cases this causes the problem. Also check and confirm that fuel pump is functioning properly and the fuel filter is not clogged. One of the easiest ways to check for a fuel pump related problem is to spray a little starting fluid into the air intake while trying to start the car. If the car starts momentarily, then there's a good chance the fuel pump is not working or the car is out of gas. You can also listen for the fuel pump's humming sound when the key is first turned on. Also if a inoperative fuel pump is suspected, a good technician will always check to verify there is power and ground being supplied to the pump, to eliminate the possibility of a bad relay or electrical issue. Fuel pressure can be checked with a pressure gauge and if there is pressure, pulse can be checked at the fuel injectors in several ways including the most common, with the use of noid lights. If the injectors don't have pulse the engine won't start. ---------- This troubleshooting tips will help you to solve the problem. Thanks. Helpmech.


Dec 20, 2010 | 2000 Buick Century

1 Answer

Wont start - the engine turns but won't fire


In addition to the battery voltage to "turn the engine over"...ignition requires spark and gas. so first check the battery voltage with meter.it should show 12 volts.If the battery is proper and fully charged you get 12 volts.

A car that cranks over but doesn't start or does not fire, in many cases will be due to a bad fuel pump, a broken timing belt, an inoperative cam sensor or crank sensor. Also this problems are related to faulty spark plug. Check the spark at spark plugs when you start the car. Do you notice any spark. Actually you should see. If in case there is no spark then it's a spark plug problem. Also the coil pack gives power to spark plug. So check the voltage at coil pack. It will show 12 volt.If there is no voltage noticed at coil pack then its faulty coil pack that has to be replaced.If all the possible options checked out ok then check the car starter. The starter gets power from battery to start the care. If the starter is faulty then it will not let the car to start. Also check and confirm that there is fuel in the car. If its very low fuel then in some cases this causes the problem. Also check and confirm that fuel pump is functioning properly and the fuel filter is not clogged. One of the easiest ways to check for a fuel pump related problem is to spray a little starting fluid into the air intake while trying to start the car. If the car starts momentarily, then there's a good chance the fuel pump is not working or the car is out of gas. You can also listen for the fuel pump's humming sound when the key is first turned on. Also if a inoperative fuel pump is suspected, a good technician will always check to verify there is power and ground being supplied to the pump, to eliminate the possibility of a bad relay or electrical issue. Fuel pressure can be checked with a pressure gauge and if there is pressure, pulse can be checked at the fuel injectors in several ways including the most common, with the use of noid lights. If the injectors don't have pulse the engine won't start. ---------- This troubleshooting tips will help you to solve the problem.Thanks.Helpmech.

Nov 15, 2010 | 2006 Honda Accord

2 Answers

Have a 89 suberban and the alternator and battery test at autozone is showing good but still not working. Cleaned termenals grounding is good. How do I check if the small 1 wire on the altanator is working...


With key on,it should read 12 volts,now check the large wire on the back of the alternator with key off,it should read 12 volts,if it does not,then ,it is not getting voltage from the battery,just run a wire,the same size,or larger on the back,along with the other wire,all the way to the battery positive side.This will solve the problem.If the small wire is not getting voltage from the ignition switch,then there is a fuse blown,or the ignition switch is bad.You can run a wire from the fuse box,to the alternator,just make sure it is on a fuse that just has power with key on,not off.If this was at all helpful,please rate,thank you.

Jul 31, 2010 | GMC C1500 Cars & Trucks

1 Answer

Wont start even if i push her,toyota tercel has no spark


So your telling me that this car is a stick and you can't pop the clutch to start it ? Correct?
I'm gonna give you a list of thing to check, good luck.

a)Do you have crank no start? (see entire write up)
b)No crank no start?, ( battery, battery cables, ignition switch,,starter relay)
c)No dash lights, no crank? (battery, battery cables ignition switch)
If you have symptom A then the affected items are , ignition switch, battery, battery cables, starter, starter relay ,coil, coil pack, ignition module ,Distributor cap ,rotor, (if applicable) spark plugs and wires.
The best thing to do is to first make sure your timing belt didn't break. As long as the engine cranks you can do this. Give the battery a 3 min charge . Then have a helper crank the vehicle while you observe the rotation of all the pulley's and belts. They must rotate together. If the vehicle has a distributor remove the cap ground the coil wire and watch the rotor as the engine is cranked. it should spin. If this is a-ok your worse nightmare is over.
Now we have eliminated the timing belt as being a cause. We now have to charged the battery again for three min and load test it( this is best done by a repair shop a load tester is expensive .If the battery if more than 5yrs old you may want to replace it.
If battery does not pass load test replace it.
Whatever you decide the rest of the items can NOT be checked out without a fully charged battery.
Check ignition switch and starter relay for B+ going to them and leaving them. Check starter circuit. Make sure B+ is making it to starter ( use a digital voltmeter). If B+ (12 volts) is making it to the starter and it doesn't crank then the starter is defective. Do a starter current draw test to verify this or remove the starter and have it bench tested.
If starter cranks now your into coil testing .
Pull a spark plug hook it up to a spark tester and ground it, now crank the engine if you get spark coil is ok and in all likelihood so is module.
If you don't get spark test for spark at the coil wire.
If you get spark here and don't get it at the spark plug wire problem is at distributor cap , rotor or spark plug wire. If plugs look bad use a fresh plug to do testing and naturally replace them.
If all of the above are a-ok.
Next is fuel checks.
Easiest fuel check is to put key into ignition cylinder and turn to on position. Lister for pump to buzz or hum. if it doesn't then check fuel pump relay for B+ going to it and leaving it and going to the pump. If B+ making it to pump and it doesn't turn on the pump is your problem. If B+ not making it to pump either the relay or the ignition switch is defective.
Naturally if the pump is defective have a repair shop do the repair . Its dangerous and a real pain.
Good Luck
IN YOUR CASE I BELIEVE YOU NEED A NEW BATTERY UNLESS THIS ONE IS FAIRLY NEW.

Apr 29, 2010 | 1995 Toyota Tercel

1 Answer

I have a 1999 dodge durango,i replaced new spark plugs and new wires but the car won't start?


Do you have crank no start? (see entire write up)
b)No crank no start?, ( battery, battery cables, neutral safety switch ignition switch,,starter relay)
c)No dash lights, no crank? (battery, battery cables, ignition switch)
If you have symptom A then the affected items are , ignition switch, battery, battery cables, starter, starter relay ,coil, coil pack, ignition module ,Distributor cap ,rotor, (if applicable) spark plugs and wires.
The best thing to do is to first make sure your timing belt didn't break. As long as the engine cranks you can do this. Give the battery a 3 min charge . Then have a helper crank the vehicle while you observe the rotation of all the pulley's and belts. They must rotate together. If the vehicle has a distributor remove the cap ground the coil wire and watch the rotor as the engine is cranked. it should spin. If this is a-ok your worse nightmare is over.
Now we have eliminated the timing belt as being a cause. We now have to charge the battery again for three min and load test it( this is best done by a repair shop a load tester is expensive .If the battery is more than 5yrs old you may want to replace it.
If battery does not pass load test replace it.
Whatever you decide the rest of the items can NOT be checked out without a fully charged battery.
Check ignition switch and starter relay for B+ going to them and leaving them. Check starter circuit.Do not forget neutral safety switch its on your brake pedal and once depressed it closes the circuit to the relay so B+ can travel to it . Make sure B+ is making it to starter ( use a digital voltmeter). If B+ (12 volts) is making it to the starter and it doesn't crank then the starter is defective. Do a starter current draw test to verify this or remove the starter and have it bench tested.
If starter cranks now your into coil testing .
Pull a spark plug hook it up to a spark tester and ground it, now crank the engine if you get spark coil is ok and in all likelihood so is module.
If you don't get spark test for spark at the coil wire.
If you get spark here and don't get it at the spark plug wire problem is at distributor cap , rotor or spark plug wire. IN YOUR CASE YOU HAVE NEW PLUGS AND WIRES SO IT WILL BE EASIER TO CHECK FOR SPARK.If all of the above are a-ok.
Next is fuel checks.
Easiest fuel check is to put key into ignition cylinder and turn to on position. Lister for pump to buzz or hum. if it doesn't then check fuel pump relay for B+ going to it and leaving it and going to the pump. If B+ making it to pump and it doesn't turn on the pump is your problem. If B+ not making it to pump either the relay or the ignition switch is defective.
Naturally if the pump is defective have a repair shop do the repair .THERE ARE FUEL PRESSURE AND VOLUME TESTS DONE TO VERIFY IF PUMP IS DEFECTIVE OR NOT. IF WITH THE TESTING PROCEDURES I'VE GIVEN YOUYOU CAN NOT DETERMINE WHETHER THE PUMP IS DEFECTIVE HAVE A REPAIR SHOP DO FURTHER TESTING ON THE PUMP. THESE TESTS ARE A LITTLE DANGEROUS and a real pain.
Good Luck

Apr 29, 2010 | 1999 Dodge Durango

2 Answers

My 1995 blazer will not start


Have you changed the module in the distributor?

Mar 21, 2009 | 1995 Chevrolet Blazer

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