Question about 1999 Jeep Grand Cherokee

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I have 99 jeep grand cherokee and the key sentry light stays on it says when it does that there is a problem with the electronics can you narrow that down?

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: HOW DO I CHANGE THE WATER PUMP ON A 99 JEEP GRAND CHEROKEE ?

At least you have the 4 liter 6. Once you get all the **** out of the way its like replacing a W/P on an "old school" engine, very much like a Ford or Chevy straight 6. 1) Remove radiator top retainer (the metal U that looks like its the top of the radiator (#13 or 14mm sockets I think). 2) To completely get if off you also have to remove the grill (4-6 phillips screws), then 3) unbolt it from the tubular bumper retainers underneath the grill. 4) DO NOT remove the latch cable - no need. 5) Remove the top bolts holding down the fan shroud. Lift the shroud off its bottom "tabs" and push over the fan. 6) Using #10mm socket remove fan from fan clutch, then remove bolts holding fan clutch onto water pump pulley. 7) Pull out shroud, then fan, then fan clutch. Be very patient, lots of wiggling may be needed. 8) Locate belt tensioner on idler puller below the Power steering pump. Losen very little the pulleys center bolt (10mm), then use a 10mm w/entension to losen the pulley's tension (use counter clockwise/normal rotation to losen). 9) Draw a diagram of the belt routing - you will Never remember it correctly otherwise. 10) Tap the w/p pully and pull if off - do not hit radiator fins! 11) Drain the radiator (clockwise/right rotation opens petoc from factory radiators - counterclock used on aftermaket rads). 12) Remove lower raditor hose at radiator, then at pump (it will be a challenge). 13) Remove upper radiator hose from rad and from thermostat housing. 14) losen the Rubber heater hose from the metal hose screwed into the W/P. 15) Remove 4 bolts from W/P (13 or 14mm I think). The one at the 4oclock position is longer than the others. One is hidden at 6oclock.
16) Remove 2 bolts (14-15mm??) on bottom of Power Steering mount - these go through the W/P case to the block. You may also need to losen the top PS bolts so the PS Bracket can be loose at the W/P case. 17) Wiggle the W/P out from under the PS bracket. and pull off. (16b if needed, remove the upper idler pulley near the A/C unit.) 18) Remove the Thermostat (upper hose return) housing. Scrape off old gasket. Replace with 160deg or 190deg thermostat. Use silicone on gasket. 19) Carefully use a 17 or 19mm box wrench to remove the metal heater hose return line from the upper part of the old water pump. Coat threads with spark plug thread antiseize and screw onto new W/P. 20) Install new W/P gasket w/silcone, be careful to Not block the water holes. 21) Slide W/P under the P/S bracket and jiggle into place. Hand thread one of the top bolts to hold the W/P in place. 22) Insert the P/S bracket bolts and lightly tighten. 23) Jiggle W/P around and insert other bolts, start with the 6oc hidden bolt. Add remaining bolts and tighten to 25 or 250?ftlb (about 3/4 past socket-snug). 24) Tighten ALL P/S bolts. 25) Adjust metal heater pipe. Reinstall rubber heater hose. 26) Reinstall W/P pulley and Fan clutch, and upper idler if it was removed. 27) Thread NEW Belt on pulleys. 28) Tighten tension on idler. Tighten idler axle bolt. 29) Install lower rad hose. 30) Slide shroud over pulleys. 31) Install fan on clutch. 32) Clip shroud retainer bolt mounts back on top of radiator. 33) Install shroud. 34) Connect upper hose. 35) Reinstall radiator retainer. 36) Bolt retainer to Tubular bumper mounts. 37) Reinstall grill. 38) Wonder where the extra bolts etc are supposed to go. 39) Cuss - pray -cuss - pray. 40 ) sip some beer. 41) carefully inspect everything to ensure its back to the way it looked before (several pictures from a digital camera taken during the disassembly will help). 42) Close the rad petok. 43) Add 1 gallons of antifreeze. 44) Start engine and add another gallon of A/F. 45) Turn heater controls to HOT inside (no need for fan). 46) Water guage should show 180 to 210F. 47) Add 1 gallon of water. 48) Install New 18PSI rad cap. 49) Turn off engine and add water or A/F to overflow tank. 50) 1 hour later open Cap to see if level has settled. Add Water as needed to fill rad.

Posted on Dec 31, 2008

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MrScary66613
  • 1990 Answers

SOURCE: tire size for jeep grand cherokee

Should be 235/60/15 You can Actually get the BF Goodrich All Terrain T/A to fit on this Jeep with no Prob. LOTS More Meat and Better Handling and 4x4 Actions

Posted on Jan 03, 2009

  • 15 Answers

SOURCE: 1998 and 2000 jeep grand cherokee

This Info taken from Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Grand_Cherokee
Hopefully this will answer your question.

The redesigned WJ 1999 Grand Cherokee shared just 127 parts with its predecessor. The structure was stiffened by PorscheEngineering for sharper steering and lighter weight. The spare tire wasrelocated from the side of the cargo compartment to under the floor togreat relief of owners. The two heavy pushrod V8 engines were replaced by chrysler's first clean sheet V8 since the 60's (SOHC aluminium heads, plastic intake), Chrysler's then-new PowerTech. Although this engine produced less torquethan both previous V8s, it was lighter and got much better fuel economyand provided similar on road performance figures (the 23 gallon fueltank was replaced with one of a 20.5 gallon capacity). The Inline 6engine was also updated in 1999. 10 horsepower (7.5 kW) was added byredesigning the intake manifold. The manual transmission was dropped with this model.
While other Jeep vehicles used the Mopar 5 x 4.5 bolt circle, thiswas the first Jeep following the 1987 Chrysler buyout to receive awider bolt pattern — 5 x 5. The 5 x 5 bolt pattern (also 5 x 127 mm),although common to GM rear wheel drive vehicles and light dutytrucks/vans, has spread beyond its use with GM (and Ford with their 1973 to 1978 LTDs and Lincolns). Chrysler first used the 5 x 5 pattern on full-size half-ton Dodge Ram pickups and Dodge Ramcharger SUVs in 1986.
A notable feature available in this generation was the automatic four wheel drive option called Quadra-Drive II.With three viscous clutches, it was one of only a few four wheel drivesystems at the time with triple locking differentals, joining thecontemporary Mercedes Gelandewagen, Mercedes Unimog and Magna SteyrPinzgauer, and the only one of the four with fully automatic operation,although the axle differentials could not be manually locked like inthe other three vehicles.
The 45RFE and 545RFE automatic transmission in the WJ was notable. It included three planetary gearsets rather than the two normally used in a four-speed automatic. Thisgave it six theoretical speeds, and it would have been the firstsix-speed transmission ever produced in volume, but it was programmedto only use five of these ratios. Four were used for upshifts, with adifferent second gear for downshifts. Although five of the six ratioswere used, Chrysler decided to call it a "4-speed automatic". In 2001,the programming was changed to make use of all six ratios. Rather thanhave six forward gears, the transmission was programmed to act as afive-speed with the alternate second gear for downshifts. The RPM at70 miles per hour (110 km/h) on a 545RFE is 2000 rpm, 200 rpm less thanthe 45RFE programming. 1999 and 2000 model year WJ owners can havetheir 45RFE transmission's programming flashed to enable the extra gearas both transmissions are physically the same. The 42RE 4-speedautomatic remained the transmission for the Inline 6 engine. It was notchanged from the previous model Grand Cherokee's.

Posted on Feb 14, 2009

  • 412 Answers

SOURCE: How do you program a 2002 Jeep Grand Cherokee FOB?

if you have an original working fob and your owner's manual,it will explain procedure,otherwise will have to go to dealer to be programmed

Posted on May 17, 2009

  • 1 Answer

SOURCE: 99 Jeep Grand Cherokee Brake light problem

You can adjust the switch by putting your thumbs on either side of the switch plunger and pushing toward the brake lever. The switch shaft will ratchet into the new position which is will then be depressed by the brake lever when it is the brake is not being depressed.

Posted on Jun 23, 2009

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2 Answers

Can a 02 jeep grand Cherokee work with out a sentry immobilizer system


Annette you can not immobolize the vehicle if the sentry system is on is your Cherokee petrol or diesel

Dec 19, 2014 | 2002 Jeep Grand Cherokee

1 Answer

I have a 99 jeep grand cherokee 4.7, the alarm went crazy and the wont start. guages dont budge and horn keeps honking and lights flashing. sentry key light is on in guage cluster any help


Sounds like you need to perform a relearn on the anti theft system, it's not recognizing the key if this happens with the key inserted. Might want to look online for a reset procedure for Jeep. GM has you keeping the key in the ignition in the on position for 10 minutes.

Jul 17, 2014 | 1999 Jeep Grand Cherokee

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Anti theft engaged ! Try disconnecting the negative terminal for about 3 min the reconnect it! Check it out on you tube !

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When jump starting my 99 jeep GC I accidentally hit the negative post with a pos cable (hot) large spark and subsequently it would crank but not start. Sentry key light came on steady as did check engine....


Not sure, but if Sentry Light stay on, by shorting it, the anti-theft system stay on ! Unplug the battery for 30min's reconnect it, and try it again, alot of chance that the anti-theft system will reprogram and will function normally ! You can go to a Local Dealer with your Jeep they will reprogram the system and everything will be fine ! For the Check Engine, need a OBD2 Code Scanner or a Garage/Dealer Scanner to know the Code Stored in the PCM and it will tell if PCM is okay too !

Aug 10, 2010 | 1999 Jeep Grand Cherokee

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1999 Jeep Grand Cherokee- When I turn the engine on, it runs for about two seconds and then stalls. The gauges do not move when I do this, and the windows won't go down either. I have checked all of the...


Is there a little key icon staying lit on the right side of your dash? If so it's a sentry key, which is an immobilizer key. You need the gray one to start the Jeep the blacks one is not chipped.

Feb 18, 2010 | 1999 Jeep Grand Cherokee

2 Answers

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If anyone has this problem also where you start your Jeep and it dies in about 2 seconds and the key symbol lights up on your dash I can help. I had this problem yesterday after jumping the battery, I had the correct key but it wouldn't read it. I had a locksmith come out and if you take off the steering column plastic there's a small black module in the column behind the key switch. Unplug that module for 5 minutes and it will reset. My Jeep started up right after. You MUST have the correct key though, mine is gray not sure about other years.

May 15, 2009 | 2004 Jeep Grand Cherokee

3 Answers

99 Jeep Grand Cherokee Brake light problem


You can adjust the switch by putting your thumbs on either side of the switch plunger and pushing toward the brake lever. The switch shaft will ratchet into the new position which is will then be depressed by the brake lever when it is the brake is not being depressed.

Mar 06, 2009 | 1999 Jeep Grand Cherokee

1 Answer

2001 Jeep Grand Cherokee won't Turnover


Jeep 2001 Grand Cherokee turns over but never starts. Doesn't run for 2 seconds and turn off. Immobilization indicator does light, flash once and remain on. All analog gauges on instrument panel are not functioning. Everything else electrically works in vehicle.

Oct 29, 2008 | 2001 Jeep Grand Cherokee

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