Question about 2002 Chevrolet TrailBlazer

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02 trailblazer RPM jump from 1 To 2 while driving 55 to 60

While driving 55 to 60 the trucks rpms jump up and down from 1 to 2 ... when starting the truck with foot on brake and placing gear to drive it has tried to take off .. what could this be.. it dosnt do it all the time

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5 Suggested Answers

Molson02536
  • 3854 Answers

SOURCE: 1992 Chevy Suburban rpms jump at 60+ mph

When the transmission jumps the extra RPM by 200 or 300 RPM. That's your Torque Converter Clutch lock up disengaging or it's slipping. Pull the transmission dip stick out and check the fluid level and condition of the fluid, look to see that it's not burning. If the fluid is not burning then it's the Torque converter clutch unlocking and the Throttle position Sensor may need to be readjusted, or if the transmission is still running off a TV cable. The TV cable may need to be adjusted and or the transmission filter may be dirty and needs to be changed. Take it to a transmission shop and explain to them what the transmission is doing. I'm not sure if your transmission is an 4L80 or a 4L80E. If it's the 4L80E the PCM and ECM control the lock up to your converter. If the PCM detects a problem with the transmission, it drops the transmission fluid pressure to the converter clutch. If it's a 4L80, it's controlled by the TV cable and vacuum lines to the transmission modulator. Regardless they can look in to this when they change the transmission fluid and filter. Recap: Have the Suburban's ECM scanned for any transmission DTC codes. Service the transmission if the fluid is dark in colour and burnt. Adjust any linkage to the transmission that is an issue to it's performance. Good luck and keep me posted, be glad to help.

Posted on Jun 07, 2009

csmock132
  • 4669 Answers

SOURCE: 2006 trailblazer ss automatic transmission problem

You friend broke the low one way clutch. He was rolling backwards and shifted into drive and floored it before the vehicle came to a stop.

Posted on Jun 29, 2009

c1apton15
  • 3400 Answers

SOURCE: I have a 2000 gmc

Sounds like TPS (Throttle Positioning Switch) They develop "hot spots" or wear spots usually at throttle positions that are commonly used alot IE: cruising speed. When they get hot spots they fluctuate looking for solid connection. Replace TPS.

Posted on Apr 04, 2011

  • 1311 Answers

SOURCE: my 02 trailblazer jumps in

Sounds like the torque converter is coming out of lockup. A technician with a highend scan tool should take it for a road test to diagnose the condition.

Posted on Aug 15, 2011

  • 3 Answers

SOURCE: My 02 chevy trailblazer's rpm fluxchuates when

Many of the 6 cyl. engines are prone to carbon build-up in the throttle body. If this is the case, it is best to clean it off the car and is fairly easy to do. Remove the snorkel, 1 electric fitting on the throttle body (a little tricky) and one vacuum line on tb as well. Four bolts remove the tb from the engine and the throttle body can be cleaned with throttle body cleaner from any auto supply store. An o-ring attaches the tb to the engine so that you will not destroy a gasket during the repair. Pretty easy and should take less than 1 hour, but be careful of sharp edges in the throttle body.

Posted on Nov 14, 2011

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Oct 29, 2015 | 2005 Chevrolet TrailBlazer

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I was driving 60 mph then my rpms jumped up to 5000 and I lost power..when I slowed down to 40 it was fine but every time I push the gas my rpms would jump and sometimes catch ....what is it on a 03 Chevy...


Could be Your ignition switch, If you have a lot of wieght on Your keychain..... the switch gets sloppy and it will do some pretty weird stuff while driving... Jiggle your keys at the key ignition..... and see If it duplicates the problem. Seems like it's Bogging down... Hope this helps. One of many ideas.

Oct 10, 2014 | Cars & Trucks

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I have a 2008 mercury Milan with nearly 60k miles on it. When I come to a stop the rpm drops by 1000 then recovers quickly. What should I do to fix the problem? Any suggestions will be greatly appreciated.


Check out related help links to troubleshoot these problem:----Click the link below:---Idles Fine but RPM jumps in drive mode? http://technoanswers.blogspot.in/2012/07/idles-fine-but-rpm-jumps-in-drive-mode.html
---------Mitsubishi Lancer rpm needle bounces? http://technoanswers.blogspot.in/2012/02/mitsubishi-lancer-rpm-needle-bounces.html
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http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html
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Engine cuts out at 3000 RPM? http://schematicsdiagram.blogspot.com/2011/12/engine-cuts-out-at-3000-rpm.html

---------

Cold start problem and vehicle shudder around 2500 to 3500 rpms
http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html

---------
High rpm in neutral? Inconsistant high RPM in neutral? http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html

-----------
Jetski Sputters and Low RPM? http://whatisbyme.blogspot.in/2012/07/jetski-sputters-and-low-rpm.html

--------
Fuel Injection Problem And RPM suddenly increases http://whatisbyme.blogspot.in/2012/07/fuel-injection-problem-and-rpm-suddenly.html

----------
2005 Toyota Highlander: Engine runs hard RPM below 3000? http://whatisbyme.blogspot.in/2012/05/2005-toyota-highlander-engine-runs-hard.html

---------
1987 Toyota Camry: RPM Drops going Up hills? http://whatisbyme.blogspot.in/2012/05/1987-toyota-camry-rpm-drops-going-up.html

-----------
Cruise Control stops working, Excessive cranks to start the engine and RPM goes max 2500 http://whoisbyme.blogspot.in/2012/07/cruise-control-stops-workingexcessive.html

----------
1990 Toyota 4Runner: Engine cuts off when reaches 2000 RPM?


http://whatisbyme.blogspot.in/2012/05/1990-toyota-4runner-engine-cuts-off.html

------------
1999 Toyota Camry: Erratic stalling and high engine RPM at idle?


http://whatisbyme.blogspot.in/2012/05/1999-toyota-camry-erratic-stalling-and.html

---------
1995 Toyota LS: Misfire at idle or low RPM http://whatisbyme.blogspot.in/2012/04/1995-toyota-ls-misfire-at-idle-or-low.html

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Lexus RX: Tapping noise under Valve Cover At Low RPM? http://technoanswers.blogspot.in/2012/04/lexus-rx-tapping-noise-under-valve.html

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These will help.
Thanks.

Nov 22, 2012 | Cars & Trucks

1 Answer

Driving on the road the RPM goes higher wituout speedind


Check out related help links to troubleshoot these problem:----Click the link below:---Idles Fine but RPM jumps in drive mode?http://technoanswers.blogspot.in/2012/07/idles-fine-but-rpm-jumps-in-drive-mode.html
---------Mitsubishi Lancer rpm needle bounces?http://technoanswers.blogspot.in/2012/02/mitsubishi-lancer-rpm-needle-bounces.html
--------How to adjust rpm on 2009 dodge charger SRT8?


http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html
---------
Engine cuts out at 3000 RPM?http://schematicsdiagram.blogspot.com/2011/12/engine-cuts-out-at-3000-rpm.html

---------

Cold start problem and vehicle shudder around 2500 to 3500 rpms
http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html

---------
High rpm in neutral? Inconsistant high RPM in neutral?http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html

-----------
Jetski Sputters and Low RPM? http://whatisbyme.blogspot.in/2012/07/jetski-sputters-and-low-rpm.html

--------
Fuel Injection Problem And RPM suddenly increaseshttp://whatisbyme.blogspot.in/2012/07/fuel-injection-problem-and-rpm-suddenly.html

----------
2005 Toyota Highlander: Engine runs hard RPM below 3000?http://whatisbyme.blogspot.in/2012/05/2005-toyota-highlander-engine-runs-hard.html

---------
1987 Toyota Camry: RPM Drops going Up hills?http://whatisbyme.blogspot.in/2012/05/1987-toyota-camry-rpm-drops-going-up.html

-----------
Cruise Control stops working, Excessive cranks to start the engine and RPM goes max 2500 http://whoisbyme.blogspot.in/2012/07/cruise-control-stops-workingexcessive.html

----------
1990 Toyota 4Runner: Engine cuts off when reaches 2000 RPM?


http://whatisbyme.blogspot.in/2012/05/1990-toyota-4runner-engine-cuts-off.html

------------
1999 Toyota Camry: Erratic stalling and high engine RPM at idle?


http://whatisbyme.blogspot.in/2012/05/1999-toyota-camry-erratic-stalling-and.html

---------
1995 Toyota LS: Misfire at idle or low RPMhttp://whatisbyme.blogspot.in/2012/04/1995-toyota-ls-misfire-at-idle-or-low.html

-----------
Lexus RX: Tapping noise under Valve Cover At Low RPM?http://technoanswers.blogspot.in/2012/04/lexus-rx-tapping-noise-under-valve.html

----------
These will help.
Thanks.

Nov 22, 2012 | 2008 Toyota Avalon

1 Answer

My 95 blazer shifts fine but my rpms jump up n down, I replaced the tps twice and it fixes it for a little bit but I was told to check the ground but I have no idea where it is


you may also want to consider the stepper motors behind the dash that control the RPM guage. They also control gas level, temperature and all of the other guages in the instrument cluster. My son's TrailBlazer started having cluster problems and for $150, I replaced them all in about 1/2 hour.

Jan 30, 2012 | 1995 Chevrolet Blazer

1 Answer

My 02 chevy trailblazer's rpm fluxchuates when


Many of the 6 cyl. engines are prone to carbon build-up in the throttle body. If this is the case, it is best to clean it off the car and is fairly easy to do. Remove the snorkel, 1 electric fitting on the throttle body (a little tricky) and one vacuum line on tb as well. Four bolts remove the tb from the engine and the throttle body can be cleaned with throttle body cleaner from any auto supply store. An o-ring attaches the tb to the engine so that you will not destroy a gasket during the repair. Pretty easy and should take less than 1 hour, but be careful of sharp edges in the throttle body.

Nov 04, 2011 | 2002 Chevrolet TrailBlazer

1 Answer

My 02 trailblazer jumps in rpm's while driving, typically when i am in crusie control over 55 mph.


Sounds like the torque converter is coming out of lockup. A technician with a highend scan tool should take it for a road test to diagnose the condition.

Aug 13, 2011 | 2002 Chevrolet TrailBlazer

1 Answer

I'M HAVING PROBLEMS WITH MY 03 CHEVY TRAILBLAZER. AFTER DRIVING FOR ABOUT 20 MIN., WHEN I COME TO A STOP, THE RPMS START JUMPING UP AND DOWN AS IF THE CAR WANTS TO SHUT OFF. AFTER THIS HAPPENS, THE RPMS...


Battery should of been disconnected while cleaning the throttle body. Try disconnecting the battery again for about an hour. Re-connect and drive around for 20 min. Hopefully this will correct the P0171 problem. One more thing that could cause this.....check your intake manifold bolts for tightness. Being that the manifold is actually plastic, these bolts can come loose, so check these out, #5 and #6 near the firewall are the easiest to check. The P0340 deals with the camshaft position sensor on the corner of the block. Runs about $35, need to replace this. Also, clean your MAF sensor.

Another thing to keep in mind on your 02 sensor you replaced. A lot of TB owners have had problems with the brand Bosch. Though mine is fine with my Bosch replacement, many have problems with them.

Feb 23, 2011 | 2003 Chevrolet TrailBlazer

1 Answer

Idle rpm too low


are you reading your rpms right....5-6000 rpms should equal 70- 85 mph....that is certainly not idle speed....invest 20bucks in a Haynes manual----it is good reading

Mar 01, 2010 | 2007 Chevrolet TrailBlazer SS

2 Answers

Stalling 02 Chevy Trailblazer


check fuel pump pressure or clogged fuel filter

Oct 06, 2009 | 2002 Chevrolet TrailBlazer

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