Question about 1987 Jeep Cherokee

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OCCASIONAL HESITATION 1987 JEEP CHEROKEE 4CYL. 160000MI-EXPERIENCE OCCASIONAL HESITATION-LIKE IT IS NOT GETTING FUEL.RECENTLY HAD FUEL PRESSURE AND SOME SENSORS CHECKED.

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  • jorgen1 Jun 13, 2008

    i will check all of these. thankyou so much for your information

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You might also want to check the fuel filter.

Posted on Jul 16, 2008

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How long since it's had a tune up? Do the basic stuff first. Check the condition of the plugs, wires, cap, rotor. If you see signs of corrossion under the cap, replace it with the rotor. Spark plugs are cheap, replace them and the wires. Check your ignition timing. If the timing is retarded, it will give you the same experience. Spray WD40 or carb cleaner along the intake where it meets the head and check for vacuum leaks. Check the condition of the vacuum hoses.

Posted on Jun 13, 2008

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1 Answer

Why is my jeep hesitating, going up a hill or when flooring it to pass?


nice facts, all, but no engine size options stated.
after all it's an ENGINE question.
you dont know whats there, and doing DIY> really?

one fact missing, and is key
does WOT power CATCH up
that is you move right foot fast and it bogs, we get that but what happens after the bog> ? more bog or it catches up.
if it dont catch up;, on hills, maybe fuel pressure low.
see?
at WOT there is no 02 sensors. nor TPS (enrich)
at WOT only you , then engine sucking air like mad the MAF at max voltage and if fuel pressure is low the car has endless bog.
see?

wot, = wide open throttle, use a hill to test, flat is useless .
max fuel is at max HP (max torque + max RPM both same time)

i own an 08 wrangler, 3.8L stick.
i just sold my 02,. with 2.4L I4, it was a bogging engine day one out of factory its a gut less I4. (only tubo can fix it)
2.4 or 4.0 L.
ive own all of them 4 and 6cyl.

Jul 19, 2014 | 2003 Jeep Wrangler

5 Answers

I've got a 1996 jeep grand Cherokee with the 5.2 v8 fuel injected Holley throttle body. My problem is while driving at soft or low acceleration it accelerates fine, but if you hit the throttle hard it


I would check the voltage on the throttle portion sensor with the engine off from idle to wide open throttle.If there are any dead spots, replace the sensor. If the tps checks out, you should check fuel pressure. If you have good fuel pressure, you may want to make sure there isn't a lot of slack in your timing chain. I don't believe you mentioned the mileage of your vehicle. Best of luck.

May 03, 2014 | 1996 Jeep Grand Cherokee

1 Answer

I have a 98 jeep cherokee that is hesitating when taking off, after it heats up it is worse, it will misfire, hesitate and jerk when accelerating. The fuel pump, crank sensor, the plugs, wires, distributer...


Check the fuel pressure. If you have 30K miles on your jeep and the spark plugs in this motor need to be replaced. Jeep Grand Cherokees are notorious for not doing well with fuel with lower octane. Fill your Jeep with at least medium grade gasoline, especially if it has been shuddering or hesitating while you're attempting to accelerate.

Sep 20, 2013 | 1998 Jeep Cherokee

1 Answer

1987 jeep cherokee 4.0 Starting Issue engine cranks over but won't start- will start and run if primed. Will restart ok but if left setting will not start again. Changed: Fuel Pump Fuel Pump...


Check your temp sensor. if it's out of range it could be sending incorrect readings to the computer. Also check the white ceramic block on the drivers side fender back near the brake cylinder. It is a resistor that affects pump pressure on start up.

Mar 23, 2011 | 1987 Jeep Cherokee

1 Answer

I have a 1999 Jeep Cherokee.. recently it started randomly shutting down while driving at low speeds. I had the crank sensor replaced, but that wasn't it. The mechanic is baffled. What should we check...


Please this is a fuel system related problem.

Check the fuel pump located in the fuel tank beneath the back seat.

The fuel pump has dropped in pressure.

Good luck dear.

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Jan 07, 2010 | 1999 Jeep Grand Cherokee

1 Answer

Acts like it isn't getting fuel or is misfiring... started suddenly according to my daughter


First check that the timing is set propperly, that all ignition wires are in good shape(not arcing) and connected properly, distributor cap not cracked, fuel pressure, air mass and or oxygen sensors are ok. The last two may have to be done by a pro depending on your experience.

Jun 01, 2009 | 1987 Volvo 240

1 Answer

87 cherokee blows out black smoke


check air filter change the charcoal canister .scan it to check the map sensor and the vacuum line that goes to it .make sure fuel pressure regulator is working.

Apr 28, 2009 | 1987 Jeep Cherokee

1 Answer

No spark?


well more questions then answers but a step closer.. good fuel pressure? check the throttle body when someone turns it over. did you try starter fluid ( put on the air cleaner for it, so it dont back fire) anyway if it runs on starting fluid then its fuel delivery system. . Basics three things to run. air, fuel, spark. you have all of these? in good supply? then look to compression and condition of dist. cap and rotor.

Mar 31, 2009 | 1987 Jeep Cherokee

1 Answer

1989 Jeep Cherokee w/ Fuel Injected 4.0L


If the Jeep is stalling when hot and hard to restart, replace the crankshaft sensor.

Oct 08, 2008 | 1989 Jeep Cherokee

1 Answer

Jeep cherokee 1990


The 1987-90 Jeep Cherokee with the Renix Eletronic Engine controls take somewhere between 4-7 revolutions before the computer has enough information to get the engine started.

If it takes longe rthan that, it may be time for a full tune-up:
Distibutor Cap and rotor
Spark plugs
Spark Plug wires
Fuel filter
Air filter
and possibly an oxygen sensor

Aug 17, 2008 | 1987 Jeep Cherokee

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