Question about 1997 Jeep Grand Cherokee

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Engine runs at about 2000 RPM all the time. Does not idle down

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  • Jeep Master
  • 4,514 Answers

Clean the idle air control in throttle body--get a haynes book at parts place for details

Posted on Apr 01, 2011

  • bill johnson Dec 27, 2011

    Replace the idle up motor 100%

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I set my trucks RPM on a low setting, from inside, no engine tampering. Now it is warmer. My truck is still running at a low RPM, seems too low for current temperature. How can I adjust my RPM?


how did you adjust a pre-programmed ECU idle settings ??? please be more specific

the vehicle's ECU is pre-programmed to run higher than 1000 rpms while in "open loop mode" then idle back down to ~750 rpms once the engine reaches operating temperature "closed loop mode"

did you tap into the OBD 2 port and used a laptop to change the settings?

Mar 15, 2015 | 2000 Nissan Frontier

1 Answer

Toyota corolla hatch 2002 idle at 2000 rpm when


All the above is normal , except 2000rpm is a little high at idle . can be adjusted down to 1500rpm. the computer adjusts the engine speed . in drive the transmission loads up the engine idle drops to 1000rpm . in park engine unloaded rpm increase all normal.

Sep 17, 2014 | Cars & Trucks

1 Answer

My 97 yukon runs at a higher rpm and has vibration and hesation in engine around 2000 rpm and uses almost three times the fuel does not do it all the time


It could be a couple of different issues going on, first I would check to make sure the engine does not have any type of vacuum leak. I check my vehicles with carb cleaner from Wal-mart, the cheap stuff. But be careful! It is very flammable, with the engine running at a idle, spray it in short bursts around the intake and vacuum lines, if there is a leak the engine will either idle up or down. Also, have the computer scanned at your local parts store and see what codes come back. When was the last time it had a complete tuneup? Hope this helps.

Nov 26, 2013 | 1997 GMC Yukon

1 Answer

CAR RUNS GREAT, STARTED DIEING WHEN A/C WAS TURNED ON, NOW A FEW DAYS LATER IT DIES EVEN WITHOUT A/C ON, RUNS BUT WILL NOT IDLE


CHECK IDLE SPEED SHOULD BE 650 - 850 RPM. IF IDLE TOO LOW AC WILL PUT DRAG SLOW DOWN ENGINE CAUSING ENGINE TO STALL IF IDLE SPEED IS TOO LOW.

Sep 09, 2011 | 2000 Mitsubishi Eclipse

1 Answer

Over heating, thermostat replaced, radiator, engine, and heat core flushed, no water in exhaust.fans working, water pump flushes water thru.


You may have air in the system. Let the engine run with the radiator cap off until the thermostat opens. Have someone then get in the truck and bring the rpm up to 1800 to 2000 rpm and hold it there for 15 to 20 seconds while you top off the system with coolant and put the radiator cap tightly back on. Then bring the rpm down to idle and road test the truck. DO NOT BRING THE RPM BACK DOWN TO IDLE UNTIL THE RADIATOR CAP HAS BEEN INSTALLED COMPLETELY. I suggest replacing the radiator cap at this time also.

May 24, 2010 | 2001 Isuzu Rodeo

1 Answer

Whats the timing for the nissan sr20 motor in my 96 serena van.. cheers weetbix


GA16DE and SR20DE Engines



1. Start the engine and allow it to reach normal operating temperature.
2. Run the engine at 2000 rpm for 2 minutes and return to idle.
3. Turn the engine OFF and disconnect the throttle position sensor harness connector.
4. Start the engine and race the engine to 2000 rpm, 3 times.
5. Connect a timing light to the No. 1 spark plug wire and battery.
6. Loosen the distributor hold-down bolt and adjust the ignition timing to 10 degrees BTDC for the GA16DE and 15 degrees for the SR20DE engines.
7. Turn the engine OFF and reconnect the throttle position sensor harness.

_Ricky got this from the web

Aug 18, 2009 | 1996 Nissan Sentra

1 Answer

2000 Chevy s10 2.2L very rough idle at low rpm


run a fuel pressure test, if that checks out fine it may be a faulty coil pack or ignition control module

Jul 28, 2009 | 2000 Chevrolet S-10

1 Answer

2000 v6 5 spd nissan xterra idles high when in gear and rolling .


From the service manual:

Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment
NGEC0549
PREPARATION
NGEC0549S01
1) Make sure that the following parts are in good order.
I Battery
I Ignition system
I Engine oil and coolant levels
I Fuses
I ECM harness connector
I Vacuum hoses
I Air intake system
(Oil filler cap, oil level gauge, etc.)
I Fuel pressure
I Engine compression
I EGR valve operation (If so equipped)
I Throttle valve
I Evaporative emission system
2) On air conditioner equipped models, checks should be carried out while the air conditioner is OFF.
3) On automatic transmission equipped models, when checking idle rpm, ignition timing and mixture ratio,
checks should be carried out while shift lever is in “N” position.
4) When measuring “CO” percentage, insert probe more than 40 cm (15.7 in) into tail pipe.
5) Turn off headlamps, heater blower, rear defogger.
6) Keep front wheels pointed straight ahead.
7) Make the check after the cooling fan has stopped.

SEF976U
3. Open engine hood and run engine at about 2,000 rpm for about 2 minutes under no-load.
SEF977U
4. Perform diagnostic test mode II (Self-diagnostic results). Refer to EC-644.
SEF217U
OK or NG
OK ' GO TO 2.
NG ' 1. Repair or replace components as necessary.
2. GO TO 2.
BASIC SERVICE PROCEDURE VG33E
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-616
2 CHECK IGNITION TIMING
1. Run engine at about 2,000 rpm for about 2 minutes under no-load.
2. Rev engine (2,000 to 3,000 rpm) two or three times under no-load, then run engine at idle speed.
SEF978U
3. Turn off engine and disconnect throttle position sensor harness connector.
SEF975R
4. Start and rev engine (2,000 - 3,000 rpm) two or three times under no-load, then run at idle speed.
5. Check ignition timing with a timing light.
SEF371S
15°±2° BTDC (in “P” or “N” position)
OK or NG
OK ' GO TO 4.
NG ' GO TO 3.
GI
MA
EM
LC
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
BASIC SERVICE PROCEDURE VG33E
Idle Speed/Ignition Timing/Idle Mixture Ratio Adjustment (Cont’d)
EC-617
3 ADJUST IGNITION TIMING
1. Adjust ignition timing by turning distributor after loosening securing bolts.
2. Turn off engine and connect throttle position sensor harness connector to throttle position sensor.
SEF972R
' GO TO 2.
4 CHECK BASE IDLE SPEED
With CONSULT-II
1. Read idle speed in “DATA MONITOR” mode with CONSULT-II.
PEF356V
700±50 rpm (in “P” or “N” position)
Without CONSULT-II
1. Check idle speed.
700±50 rpm (in “P” or “N” position)
OK or NG
OK ' GO TO 6.
NG ' GO TO 5.

Mar 25, 2009 | 2000 Nissan Xterra

1 Answer

VOLVO S40 SE 2001RPM HIGH


YOU MAY HAVE A IDLE SPEED CONTROL VALVE PROBLEM, CLEAN IT FIRST, THEN DISCONNECT THE BATTERY, FOLLOW THE PROCEDURE I HAVE ATTACHED.

Here is the most common cause of this stall and idle speed issues, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Nov 07, 2008 | 2000 Volvo S40

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