What would cause rpms to be affected while slowing down from 55mph to 15mph & then back to 55mph? If I switch it into N & then back to D it doesn't do anything.

215

Asked by Nov 06, 2012 at 10:23 AM about the 2002 Pontiac Grand Prix GT Coupe

Question type: Maintenance & Repair

What would cause rpms to be affected while slowing down from 55mph to 15mph & then back to 55mph?  If I switch it into N & then back to D it doesn't do anything.

4 Answers

115

What are you asking? Rpms are how fast the engine is spinning, so as you slow down they will change, it will change as the trans downshifts/upshifts.

34,325

On top of that, what do you mean it does nothing? It stops acting strange or it acts like its still in neutral?

1,175

Why shift to neutral???? I'm soooooo confused!!!!!!!!!

215

While driving if I switch gears into neutral or Drive 3 the problem goes away. What I'm asking is why is the engine/trannsmission surging, jerking, lunging like it wants to stay running or driving yet while driving at 0-40mph or at highway/freeway speeds under cruise control it doesn't act this way, only acts this way if the accelerator is in a certain spot or while accelerating onto highway/freeway ramps or after roundabouts or while going uphill, nothing confusing about it really, just don't want to have to put duct tape over the rpm gauge like one mechanic told me to do & just deal with it.

Your Answer

Add photo

Related Questions

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,834 nationwide Grand Prix listings starting at $1,700.

ZIP:

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 4,350
#2 Tom Demyan
Tom Demyan
Reputation 2,950
#3 munron
munron
Reputation 2,290
View All

Related Models For Sale

Used Chevrolet Impala
556 Great Deals out of 35,581 listings starting at $899
Used Pontiac Bonneville
4 Great Deals out of 535 listings starting at $1,799
Used Ford Mustang
705 Great Deals out of 44,424 listings starting at $1,500
Used Chevrolet Monte Carlo
12 Great Deals out of 1,424 listings starting at $2,400
Used Pontiac Grand Am
4 Great Deals out of 1,139 listings starting at $1,000
Used Chevrolet Camaro
353 Great Deals out of 31,259 listings starting at $2,500
Used Chevrolet Malibu
1,176 Great Deals out of 79,466 listings starting at $2,500
Used Pontiac Firebird
14 Great Deals out of 756 listings starting at $2,995
Used Nissan Maxima
332 Great Deals out of 24,188 listings starting at $1,999
Used Nissan Altima
1,268 Great Deals out of 74,640 listings starting at $1,000

Used Cars For Sale

2008 Pontiac Grand Prix For Sale
9 Great Deals out of 401 listings starting at $1,700
2007 Pontiac Grand Prix For Sale
15 Great Deals out of 381 listings starting at $1,950
2006 Pontiac Grand Prix For Sale
6 Great Deals out of 456 listings starting at $2,000
2005 Pontiac Grand Prix For Sale
5 Great Deals out of 365 listings starting at $2,350

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.