Accelerator doesn't directly correlate to RPMs/speed

20

Asked by Oct 05, 2014 at 03:23 AM about the 2002 Saturn S-Series 4 Dr SL1 Sedan

Question type: Maintenance & Repair

My 02 Saturn SL1 acts a little strange
from time to time. It only ever
happens at highway speeds. When I
drive at about 65mph, my RPMs run
higher than normal. I try to keep it at
about 1.8k, but it will be in mid 2s
instead. My accelerator seems to
have different 'stages' to it, such as
foot off is off 1-75 percent down will
cruise me at 65 and high rpms, and 76
percent and up will make it fly like a
bat out of Hell like my foot is hard
down! Its not only annoying that I
have to go either 65 or 100 down the
highway with no middle ground, but it
also kills my gas even when Im just
cruising at 65 since it is revving
higher. I MAYBE got 20mpg highway
when I normally get 33 combined
when it happened again tonight. It
only happens every 2 weeks or so,
weather isnt a factor, and turning it
off/restarting doesn't fix it. I just have
to resign myself into losing money for
that whole day when it decides to act
up. Its an automatic, and 65 is not a
shift point. Can someone help me
figure this out?

3 Answers

67,375

It sounds like a transmission problem. Like you've lost overdrive and/or torque converter clutch lock up. In my '08 Grand Marquis cruising at 70 MPH the tachometer stays right at 1700 RPMs. My '00 Grand Prix, which has lost both overdrive and torque converter clutch lock up, cruises at 70 MPH with the tachometer at 3000 RPMs. HTH. -Jim

1 of 1 people found this helpful.
20

Could it be overdrive if there's (at least) one more gear left? It shifts at ~80 and the problem starts all over again. Also, when I take my foot off the gas, the RPMs drop REALLY slow. I can coast down 10 MPH before it drops 150 rpm... does that change anything?

2 of 2 people found this helpful.
67,375

Definitely. Overdrive is actually the highest gear the transmission shifts into. Once that shift occurs, shortly after, the torque converter clutch locks in and the RPMs drop further. Increasing fuel economy. HTH. -Jim

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

S-Series

Looking for a Used S-Series in your area?

CarGurus has 762 nationwide S-Series listings and the tools to find you a great deal.

ZIP:

Search Saturn S-Series Questions

Saturn S-Series Experts

#1 Alex Nazarian
Alex Nazarian
Reputation 1,510
#2 helpmeplease
helpmeplease
Reputation 1,040
#3 fabian_09_21
fabian_09_21
Reputation 890
View All

Related Models For Sale

Used Saturn VUE
58 Great Deals out of 2,148 listings starting at $1,500
Used Saturn L-Series
450 listings starting at $1,999
Used Honda Civic
811 Great Deals out of 88,099 listings starting at $1,299
Used Ford Focus
633 Great Deals out of 57,258 listings starting at $795
Used Toyota Camry
1,104 Great Deals out of 90,757 listings starting at $1,599
Used Saturn ION
4 Great Deals out of 1,154 listings starting at $1,995
Used Honda Accord
946 Great Deals out of 77,735 listings starting at $899
Used Toyota Corolla
860 Great Deals out of 70,584 listings starting at $1,874
Used Nissan Altima
1,156 Great Deals out of 79,666 listings starting at $500
Used Ford F-150
2,064 Great Deals out of 207,332 listings starting at $1,499
Used Chevrolet Impala
591 Great Deals out of 34,068 listings starting at $899
Used Ford Taurus
270 Great Deals out of 20,573 listings starting at $1,995
Used Chevrolet S-10
5 Great Deals out of 1,311 listings starting at $2,400

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.