Question about 2002 Jeep Grand Cherokee

1 Answer

Jeep won't start

I recently changed my battery on my jeep and went to fire it up it just cranks and engine light flash's or stays on constant. fuel pump is fine and it is getting fuel. Please help

Posted by on

  • 1 more comment 
  • siilence316 Jan 15, 2009

    well i went back to where my jeep quit and started it up this morning it idled fine tried to give it gas and it sputtered and then died quick. I did the key reset thing 3 times and i saw two codes p-0351 and p-0352. I don't have the owners manual since i bought the jeep used.

  • siilence316 Jan 16, 2009

    how the heck can you do that lol on the re sinc aspect of it.

  • siilence316 Jan 19, 2009

    thank you so much for the help saved me alot of money and so simple.



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 53 Answers

What generally happens with jeeps. is the idle air control valve loses memory of its idle position. try starting the vehicle with your foot slightly on the gas pedal. if it starts your going to have to keep it running by keeping your foot on the gas until it relearns its position and runs by itself. also there is a possibility that one of the modules locked up. if my first suggestion doesnt work then disconnect the negative batt cable for 30 seconds reconnect and then try to start it

Posted on Jan 15, 2009

  • Ernest Stalker
    Ernest Stalker Jan 16, 2009

    ok. now that i know the codes that helps alot. what the codes say is that coils 1 and 2 are not getting the need dwell time to create ample votage to make a spark. the suggested repair in the chrysler archives is to repace the cam sensor drive unit and sensor and re sinc the cam and crank sensor signals. the cam sensor and drive unit are located near the oil filter. its mounted into the block almost like a distributor would be on earlier 4.0L jeeps.

  • Ernest Stalker
    Ernest Stalker Jan 18, 2009

    well, once you replace the cam sensor drive ( and you have to put the new one in in the exact same position) the vehicle should run ok. but the timing may be off a few degrees. there are a few aftermarket scan tools like the snap on solus or modus that have the capabiltiy to re-sinc the signals. but i recommend getting it done by the chrysler DRB III scanner. you would have to bring it to a dealer and spend about 1/2 an hours labor but it will be done right.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Jeep will crank but not fire, check engine light will not come on so I can get codes.

Need to check spark and fuel start by picking up a tester for the wires it plugs in like a spark plug and has a light that will come on if you have spark the next disconnect the main fuel line to the fuel rail and turn the key to the on position if u get fuel out of it the the pump is good

Jan 27, 2014 | 1997 Jeep Wrangler

2 Answers

My 1995 grand cherokee takes a lot to start. turns over fine, but won't fire. checked fuel rail, no pressure. after trying 15 times or so, it will start and run just fine. starts right back up unl

Your Jeep has what's known as the delayed start, no check engine light problem. The Jeep will not start until the check engine light comes on, on the dashboard. Next time it cranks but will not start, look at the dashboard to see if the check engine light is illuminated. If it's not lit up, then your Jeep does have that problem and your Jeep ecu is in need of repair or replacement. There are components inside the ecu that are going bad and will continue to get worse, eventually leading to a permanent no start condition. There are ecu repair services and replacement ecus on ebay.

Jan 17, 2013 | 1995 Jeep Grand Cherokee

1 Answer

92 wrangler wont start

Jiggle the wire connectors going in to the computer under the hood -- first check battery cables/terminal connections at battery -- beleive it or not, connection could SEEM good because you get crank & lights, but if it's faulty, loose, engine won't start - computer requires good solid voltage flow.. next check a fusible link very close to the battery off of the positive cable. check fusible link carefully. this could cause your problem for sure.

Aug 10, 2012 | Jeep Cars & Trucks

1 Answer

Have a 89 jeep Comanche starts but won't stay

If is fuel injected try checking the fuel regulator and if is has a carburetor possible bad choke or needle seat / worse case jump timing

Dec 19, 2011 | 2006 AMC Comanche

1 Answer

New alternator and battery installed still will not start

Not much to go on. Try replacing the start relay with another one in the fuse box. Thats if it won't crank. If it cranks need to see if you are getting fuel look down the TB carburetor looking thing on top of engine with key on and someone cranking engine. Put one of those testers in line with the spark plug wire it has a light inside that flashes when the engine fires. Or you could disconnect sparkplug end and hold on but it will knock you on your *** and could KILL you so don't do it

Dec 03, 2011 | 1997 Jeep Grand Cherokee

1 Answer

1994 jeep grand cherokee laredo starting problems

Check to see if the fuel pump is running after it shuts down...could be a relay or the pump itself (overheating internally) Checked the fuel filter yet? Some crank sensors need to be shimmed. If it's too close to the flywheel even though you recently changed it, if it's too close to the wheel it can fail again. May not be the case but worth checking over. Also check the ceramic resistor on the left fender near the master cylinder if you have one. That too can cause problems.

Dec 27, 2009 | 1994 Jeep Grand Cherokee

1 Answer

Car will not start, battery seems to be good, oil was changed, new igniation coil and spark plugs installed as well as new incection fuel pump. it was running fine for 1 week went to turn the car off and...

Sounds like it could be the crank sensor. This sensor relays engine crankshaft position to the computer so it knows which spark plug to fire when as well as other info. Another common problem with a Jeep is the throttle position sensor. This usually doesn't prevent the vehicle from starting but its not impossible either.

Jul 14, 2009 | 2001 Jeep Grand Cherokee

1 Answer

92 Jeep Wrangler that won't start

The timing belt might have slipped if it did you could crank until the cows come home and it wont start, thats the first place I would look,since yo have fuel and spark.

Mar 17, 2009 | 1992 Jeep Wrangler

Not finding what you are looking for?
2002 Jeep Grand Cherokee Logo

351 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts


Level 3 Expert

77544 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Kevin Daniels

Level 3 Expert

1455 Answers

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

Answer questions

Manuals & User Guides