Question about 1999 Jeep Cherokee

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1999 jeep grand cherokee 4.0 liter that will not start and is slower than normal when cranking but will start if you depress the gas pedal then it my start but then stalls out

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  • Kevin Knowles Nov 07, 2012

    my problem was a shorted battery, internally shorted cells. replaced battery and it solved my problem

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The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM or ECM,ECU), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems can and do cause many drive-ability related problem such as rough idle and other symptoms.

Posted on Nov 05, 2012

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Posted on Jan 02, 2017

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SOURCE: 1996 jeep grand cherokee 4 x 4 with 5.2 liter v8

under the vehicle...mounted close to the front of the fuel tank...be sure to release the fuel pressure before you disconnect any line..you can do that by removing the fuel pump relay and cranking the engine

Posted on Sep 27, 2008

  • 6982 Answers

SOURCE: 2000 jeep grand cherokee 4.0 liter engine timing belt replacement

If you have the same pulley arrangement that most 4.0 engines have that pulley is an idler not a tensioner. Your power steering pump has a pivot bolt, and a slide under the pump. You adjust belt tension using the pump.

Posted on Apr 05, 2009

  • 6982 Answers

SOURCE: wont hold idle will start with foot depressing gas pedal will run with foot on gas but stalls when foot removed

Check and clean Idle air control valve. Make sure its responding to signal as well. Also make sure ther are no vacuum hoses disconnected. This may not be a "cure" but it's a good place to start.

Posted on Apr 14, 2009

  • 67 Answers

SOURCE: 2001 Jeep Grand Cherokee 4.7L crank no start

easy trouble shoot easy fix ! check to see if its getting fire if not replace the crank sensor it will fire right up common problem with the jeeps . Hope this helps you out !!!

Posted on Jun 02, 2009

  • 6982 Answers

SOURCE: jeep grand cherokee computer problems (will not

there are specific tests you can run before changing parts...You should show an open circuit with no resistance between b&c connector pins on the crank sensor. (check with ohmeter) You also need to check that you have fuel /spark and test related items. (cps can kill both)

Posted on Jun 05, 2009

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