 |
|
07-12-2004, 07:40 PM
|
|
Hummer Novice
|
|
Join Date: Jul 2004
Location: Pensacola, Florida
Posts: 15
|
|
I took my 2003 Hummer to the dealer service department today to have the engine looked at. I am experiencing surging or fluctuating rpm's while maintaining a constant speed, in the 40 to 60 mph range. They have not diagnosed the problem yet. RPM surge is about 50,.... small, but significant enough to feel. Even passengers have asked what,s wrong. They can feel the pulsating also.
Has anyone else experienced this, or have an idea??????
Thanks  |
07-12-2004, 07:40 PM
|
|
Hummer Novice
|
|
Join Date: Jul 2004
Location: Pensacola, Florida
Posts: 15
|
|
I took my 2003 Hummer to the dealer service department today to have the engine looked at. I am experiencing surging or fluctuating rpm's while maintaining a constant speed, in the 40 to 60 mph range. They have not diagnosed the problem yet. RPM surge is about 50,.... small, but significant enough to feel. Even passengers have asked what,s wrong. They can feel the pulsating also.
Has anyone else experienced this, or have an idea??????
Thanks |
07-12-2004, 07:40 PM
|
|
Hummer Novice
|
|
Join Date: Jul 2004
Location: Pensacola, Florida
Posts: 15
|
|
I took my 2003 Hummer to the dealer service department today to have the engine looked at. I am experiencing surging or fluctuating rpm's while maintaining a constant speed, in the 40 to 60 mph range. They have not diagnosed the problem yet. RPM surge is about 50,.... small, but significant enough to feel. Even passengers have asked what,s wrong. They can feel the pulsating also.
Has anyone else experienced this, or have an idea??????
Thanks |
07-12-2004, 07:51 PM
|
 |
Banned
|
|
Join Date: Jan 2003
Posts: 24,247
|
|
How many miles on it?
Might need to clean the intake on the throttle body. Take some carb cleaner spray and clean the inside of the throttle body. Both my Denali and H2 (both have the same engine) experience something similar to what you describe and a quick cleaning of the throttle body clears it up. The Denali will "lope" at idle when you first crank it, but the H2 doesn't when they need some cleaning.
|
07-12-2004, 08:38 PM
|
|
Hummer Novice
|
|
Join Date: Jul 2004
Location: Pensacola, Florida
Posts: 15
|
|
Yes, the mileage is 39,000
Nielsen
|
07-12-2004, 11:53 PM
|
|
H2 Club NY Chapter Founder
|
|
Join Date: Dec 2002
Location: Long Island, NY
Posts: 240
|
|
i did , and the verdict was dirty throttle body
__________________
2003 White Lux....Everything but the kitchen sink.
|
07-13-2004, 12:58 AM
|
|
Hummer Professional
|
|
Join Date: Dec 2002
Location: Houston, TX
Posts: 348
|
|
The throttle body is very sensitive since we have a drive by wire set up. When you have the surge at idle or sit in traffic at idle the computer will shut off the a/c compressor to raise the idle and make the a/c not cool. I just cleaned mine for the second time myself but paid the dealer first.
__________________
Black H2 Adventure Series + Luxury, AirForce One intake, Throttle Body Bypass, Gobi Rack w/2\" Brackets & 4 PIAA 580 Lights, Xenarc HID, Alcoa Wheels, Goodyear 37x12.50x17 MT/R, Warn 9.5Ti Thermometric Winch, DiabloSport programmer,160 Degree T-Stat, B&B Headers and full dual exhaust by B&B as well, ARB fridge/freezer, Full Audio upgrade.
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
 Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT +1. The time now is 09:05 AM.
|
