Question about 1999 Jeep Grand Cherokee

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Is the idle speed control and the idle air control the same on a 04 jeep grand cherokee?

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  • Jeep Master
  • 20,706 Answers

Most cars , not all, and not all engines ,it can be 2 valves.

you never stated which engine option, (90% never do)

3.7L or 4.0L I6) 4.7L? each has its own EFI design.

so Icant be exact , at all

but ill answer in generic (im an idle expert)

first off, idle will be the last thing to work right on all EFI based engines

(its like balancing a broom on nose) (ask why)

there are traditionally (but not on newer smarter ECUs)

valves.

1: a pure water temp fast idle cold, valve, working exactly like

the RAD/block thermostat with wax pellet. IAC

2: the Electric valve i call ISC and is a slave to the ECU.

the ecu forms a idle control servo closed loop.



now ill look yours up, with engine guess.

i think, in 2001 there are only 1 IAC. (ISC)

its on the 4L TB, ive cleaned mine like 100 times, in 25 years ( 3 jeeps and 4 jabs jeeps)

they all stick and for the same reasons.

i make a joke of the EGR cloud, smacking into the PVC CLOUD.

creating GUNK, that causes all ISC to stick,

even my new car.

what i did to my 88 horror jeep was clean it.

the ISC CONE, with carb cleaner

then spray it with my magic Russian gun lube. good to -55c.

looks like tefon frying pan coating, after.

this was a new perfect cure. and a SECRET, ive never told.

88,99,02 jeeps, 91,96,97.04 jab jeeps,(Vitara\'s)



the EGR ,same deal

ask me for help with any idle problem.

there are many causes.



13 ways, here. (applies to all EFI gas )

http://www.fixkick.com/IDLE-AIR/idle-index-home.html



what\'s the symtoms, hot or cold?

Posted on Dec 27, 2013

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: 2002 jeep cherokee laredo

the only problem that vehicle has is with cooling fans is relay/module or electrical harness to module that burns up located behind and under right front headlamp assy must remove headlamp to access relay/module that is what powers up fan motor module assy.

Posted on Aug 10, 2008

  • 20 Answers

SOURCE: 2001 Jeep Grand Cherokee which fuse controls heated seats?

Fuse # 20, located in the Junction Block (interior, drivers side). This is a ten amp fuse.

CLICK_HERE

Read the information at the above site. The TSB (technical service bulletin) may be of interest to you.

Posted on Nov 20, 2008

  • 1 Answer

SOURCE: Heater blows cold air when idle

Sounds like you may have a partially plugged heater core. You could flush this out separately, from flushing radiator & engine block. Diconnect heater hoses going to your heater core and clamp off, so not to loose coolant from engine. Now hook up separate hose to one side of heater core pipe and flush out with typical garden hose. Repeat procedure on both heater core inlets. Reconnect original heater hoses and test difference. You may have to add an additional litre of antifreeze. If this don't work i suggest changing heater core. Good luck.........Ron.

Posted on Jan 03, 2009

inhisname
  • 76 Answers

SOURCE: Heat/AC Blower fan speed only works on High

hello, this sounds like a bad blower motor resistor!! its cheap and easy to change..if you need more info on locations let me know,, good luck.....marty

Posted on May 27, 2009

  • 1 Answer

SOURCE: 2004 jeep grand cherokee idling problem. Revs motor 200 to 500 rpms higher while driving.

I had the exact same problem on my 04 GC. I put some Techron Concentrate Plus Fuel System Cleaner in from Wal-Mart and it seemed to fix the problems right away. Let me know.

Posted on Jun 01, 2009

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1 Answer

1996 Jeep Grand Cheerokee. Will only start will accelerator pushed and will only keep running if it is pushed. If I let off, it stalls completely.


Could be the idle air control valve or a dirty throttle body.
The computer controls idle speed by how much air enters the throttle body and intake.
You would need to check the throttle body and test the control valve.

Feb 15, 2013 | 1996 Jeep Grand Cherokee

1 Answer

04 jeep cherokee larado idles too slow or fast then engine light comes on


Ask for a free scan of your computer at any chain auto parts store; there is probably an error code stored that may tell you the source of the problem. It takes only a few minutes and will yield a 4-digit code pointing toward the problem.
I suspect the idle air control is faulty or you have a broken vacuum line or leak.

Sep 16, 2010 | 2004 Jeep Grand Cherokee

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Have a 1997 Jeep Grand Cherokee 2.5 Diesel. Idles


Change fuel filter and air filter. If that doesn;t help you may have a fuel transfer pump pressure problem.

Mar 05, 2010 | 1997 Jeep Grand Cherokee

1 Answer

04 Jeep starts but stalls when put into gear.


make sure your idle air control motor is working, if you give and hold gas pedal a little will it stay running in drive.

Oct 03, 2009 | 2004 Jeep Grand Cherokee

1 Answer

2004 jeep grand cherokee idling problem. Revs motor 200 to 500 rpms higher while driving.


I had the exact same problem on my 04 GC. I put some Techron Concentrate Plus Fuel System Cleaner in from Wal-Mart and it seemed to fix the problems right away. Let me know.

May 31, 2009 | 2004 Jeep Grand Cherokee

1 Answer

02 jeep grand Cherokee 6 cyl seems to idle too high. When stopping ,vehicle wants to keep pulling forward and have to apply brakes harder to stop vehicle. Very troublesome in snowy conditions.


check for vacum leaks using a spray bottle of water  when the idle frops you found it  if water wont work try starting fluid or carb cleaner  if useing these the idle may increase  when you find it  replace/repair the hose and see if its still happending  could also be a combination of things  idle speed control motor idle air control motor  mass air flow sensor  good luck    

Mar 28, 2009 | 2002 Jeep Grand Cherokee

2 Answers

Wont stay runing


try pulling the plug out on the idle air control valve then start it if thats not it try the map then the idle control

Dec 13, 2008 | 1998 Jeep Grand Cherokee

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