Question about 2009 Chevrolet Silverado 2500HD

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2007 2500hd under a load the engine light comes on and will not rev up pass 2000 RPM.

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Does it happen after awhile or right away? If after awhile, it sounds like the transmission is overheating and causing the truck to go into 'limp' mode.

Posted on Aug 20, 2010

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MY ALTIMA (2002 4 CYL) SHOWS ON THE SCANER 4*B ON BASE TIMING, THE TIMING CHAIN IS WELL INSTALLED ACCORDING TO THE MARKS, CAN SOMEONE GIVE ME AN ADVICE?


IGNITION TIMING IS 13 - 17 DEGREES BTDC AT 650 - 750 RPMS. YOU NEED A TIMING LIGHT.TO SET TIMING FIRST CHECK FOR ANY TROUBLES.MAKE SURE YOU HAVE NO CODES. NOW TO SET TIMING.APPLY PARKING BRAKE AND BE SURE THAT THE CAR IS IN PARK.START AND RUN ENGINE UNTIL IT GET OPERATING TEMPERATURE.RUN THE ENGINE ABOUT 2000 RPM FOR 2 MINUTES UNDER NO LOAD,TURN OFF ALL ELECTRICAL LOADS, DISCONNECT THE THROTTLE POSITION SENSOR ELECTRICAL CONNECTOR,BE SURE THE ENGINE SPEED IS 700 - 800 RPM. REV THE ENGINE 2 OR 3 TIMES TO 2000 - 3000 RPM AND RETURN THE ENGINE TO IDLE SPEED.CONNECT A TIMING LIGHT TO THE NUMBER 1 CYLINDER SPARK PLUG WIRE AT THE DISTRIBUTOR END AND CHECK THE IGNITION TIMING BE SURE THAT THE TIMING POINTER IS POINTING TO THE 15 BTDC MARK ON THE CRANKSHAFT PULLEY,EACH NOTCH ON THE CRANKSHAFT PULLEY REPRESENT 5 DEGREES. IF THE TIMING IS NOT WITH IN THE SPECIFICATION, LOOSEN THE DISTRIBUTOR MOUNTING BOLT AND ADJUST THE DISTRIBUTOR UNTIL THE TIMING IS AT PROPER SPECIFICATION. TIGHTEN THE DISTRIBUTOR MOUNTING BOLT TO 10 - 12 FT LBS,STOP THE ENGINE AND CONNECT THE THROTTLE POSITION SENSOR.

Mar 29, 2011 | 2001 Nissan Quest

2 Answers

Code p0495 comesup engine seems to rev very high


its your fan clutch
i've replace them before very hard you need to take fron clip of bumper

May 08, 2010 | 2002 Chevrolet Trailblazer Ext

1 Answer

Engine idles perfectly and revs fine while in park. Under load the engine cuts out hard while accelerating at about 2000 rpm. Recently has had new throttle body, checked vac lines and actuator on air...


ur having fuel supply or poor electrical supply problem thats why the engine cuts off underload/ check spark plugs or airflow meter condition as well....

Apr 08, 2010 | 2003 Nissan Pathfinder

2 Answers

Car is boging out in park and will not go over 3000 rpm in park and throttle all the way to floor. also i get the scent of burned oil coming from underhood. on a 2000 jaguar s type


If it only stops at 3000 rpm in park, it probably has a governor to prevent you from revving it over 3000 rpm with no load on it. That isn't very good for engines. As long as it goes over 3000 while driving, don't worry about it.

Dec 13, 2009 | 2000 Jaguar S-Type

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

Can't pass 3000 rpm


need to check codes and see if it has oil in it. and go from here.
if the computer sences low oil pressure it sets a rev limiter to try and save the engine. code P1259 i think. 4 or 6 cyl?

Dec 18, 2008 | 2000 Honda Accord

3 Answers

ASM 2525 NO ppm TAILPIPE EMISSIONS failure


have you had the the engine codes pulled and reset?
and if so what are your engine codes?
i dont know of any car that will pass emissions test with the engine light on.
we cure your trouble that caused your engine light to come on and you will pass your test.
later
paul

Nov 24, 2008 | 2002 Toyota Sienna

1 Answer

Engine high rev at stop and slowly goes to idle speed.


I've got Hyundai Lantra 1.6 year 2000. It's take time to start when it's hot. When I start my car it revs at about 2k-3k rpm. It also does it when I come to a stop. When I come to a stop it will stay at a higher rpm than that of idle speed. It drives ok when on freeway but uses more petrol. I have changed the water & petrol pump but no luck

Oct 26, 2008 | 2000 Hyundai Elantra

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