Question about 1995 Jeep Grand Cherokee

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My jeep will not start have no spark to the plugs

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The ecu is what controls spark to the plugs. Various sensors tell the ecu to spark. If the crank sensor is bad or the ecu itself is bad, it will not spark. You'll have to read the trouble codes to find out what exactly is wrong within your jeep.

Posted on Mar 15, 2011

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1988 Jeep Wrangler starting problems. I replaced the ignition module, spark plug wires, coil, distributor module, and my jeep will not start. It gets fuel, turns over, but still not starting. It is a 1988...


you are saying it is getting spark, and fuel, right? If it is getting spark, and fuel in to the throttle body, check compression-make sure the Mass Air Flow sensor is plugged in, and double check your spark-you say you replaced all those ignition items, but do not say that you have spark.

Jul 01, 2011 | 1988 Jeep Wrangler

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Jeep wont start i have fuel and compression but cant tell if i have spark, whats wrong


Pull a spark plug wire off a spark plug, insert a screwdriver into the plug and replicate a spark plug gap using the screwdriver against the valve cover or something that has a ground connection. Have someone crank the engine over while you check for an arc with your simulated spark plug/screwdriver.

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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

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Start with the basics...meaning check the spark plug wires and spark plugs. While under the hood, inspect all hoses for a vacuum leak(s). Then turn the ignition key on-off-on-off- on...leave in the on position and write down the number of flashes the check engine light indicates....2 flashes = #2....pause.....3 flashes = #3.
Let start from here. Are you able to perform engine repairs or diagnostics???

Jan 17, 2010 | 1989 Jeep Wrangler

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My 1989 jeep sometimes it starts and sometimes it does not


Are the spark plugs and wires original ?
if so replace them, or test spark plugs and wires and clean and set spark plugs.
Try using a fuel cleaner as well .
Check air filter change if dirty.
Changing oil will help as well including a better brand of oil such as Castrol GTX high mileage

Sep 10, 2009 | 1989 Jeep Cherokee

2 Answers

Wont start


Hi,
You can pull a plug wire end from a plug and either put a spare plug in the end, or remove one of your plugs from the engine. Just lay the plug onto the engine... don't hold it... ha
Have someone turn the engine over and observe for spark at the end of the plug.
This will at least determine if you're getting spark. Good luck!

Sep 02, 2009 | 1999 Jeep Cherokee

1 Answer

Jeep wont start


well sounds like u need a new god dam jeep *****

Aug 05, 2009 | 1990 Jeep Cherokee Limited

1 Answer

1988 jeep wrangle


Check your spark plugs. Without good spark plugs the ignition won't ignite. Just go look for Jeep spark plugs at like AutoZone and they are real cheap. To change them you will need a long socket wrench to twist them out and change each one.

Jan 30, 2009 | 1988 Jeep Wrangler

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