What is the normal RPM when driving 55mph?

10

Asked by Jun 17, 2013 at 10:47 AM about the 1997 Ford Taurus

Question type: Maintenance & Repair

My 1997 3.0L LX runs at just under 2000 RPM at 55mph.  But, it 'sounds' like it's 3000 RPM, in that it's noticeably more 'hummy' now.  Not sure what that's about.  Is there a chance the O/D button got pushed accidentally (and it's not in O/D now)?  If so, that still wouldn't explain it showing 2000 RPM (which sounds about right and shouldn't sound revved up).

7 Answers

254,535

Should be around the 2K mark. You might be experienceing other noises not associated with the transmission. Does it only make the noise traveling down the road or at idle as well?

2 of 2 people found this helpful.
25,595

Possible and not unusual is the failure of a Motor Mount or two. That will transmit noise throughout the car that you never heard before. Does it "clunk" when you put it in Drive or Reverse from a stop?

1 of 1 people found this helpful.
10

No, there is no clunking when going between drive and reverse and stop. Could it still be motor mount failure? And it really only makes this louder than usual hum on the highway; although I do notice that when I'm coasting, say, in town at around 30mph, the car doesn't slow down like it used to. It seems to like to hum along now at 30 (not slowing down until I brake). It's like it's thinks my foot's on the gas keeping it at 30 when in fact my foot's not on the gas at all. The alternator recently had to be replaced. Maybe the mechanics messed up the tuning of the car when they replaced the alternator?

25,595

They can't mess up the tuning of the car. The computer did reset and has to re-learn several settings since the battery was disconnected but everything should be back to normal within a few hundred miles. Perhaps you should take it back to them and explain what you are experiencing. Motor mounts can still make strange noises but so can many other things. The IAC (Idle Air Control) can fail and cause symptoms like you mention but that's only a guess.

1 of 1 people found this helpful.
Best Answer Mark helpful
254,535

Something isn't right, I'd take it back to the mechanic and have them check it out.

1 of 1 people found this helpful.
10

I found out that there were 2 issues going on with the car. The "not slowing down with foot OFF the gas (at 30mph)" issue was the result of a malfunctioning fuel intake regulator (I guess it had runs its course after 140K miles). And the "humming (at 55mph) as if the RPMs were 3000, when in fact they were at 2000 as correctly displayed on the RPM meter" issue was a results of the right front wheel bearings being shot. So, replacing the regulator and the bearings corrected the two problems.

1 of 1 people found this helpful.
25,595

I'm glad you got it fixed. Take care!

Your Answer

Taurus

Looking for a Used Taurus in your area?

CarGurus has 16,425 nationwide Taurus listings starting at $1,850.

ZIP:

Ford Taurus Experts

  • #1
    Tom Demyan
    Reputation
    4,190
  • #2
    dandyoun
    Reputation
    2,020
  • #3
    lightGear
    Reputation
    1,950
View All

Related Models For Sale

Used Chevrolet Impala
514 Great Deals out of 34,211 listings starting at $950
Used Ford Explorer
854 Great Deals out of 64,022 listings starting at $1,000
Used Ford F-150
2,317 Great Deals out of 184,578 listings starting at $699
Used Ford Mustang
724 Great Deals out of 38,098 listings starting at $895
Used Honda Accord
1,117 Great Deals out of 62,345 listings starting at $1,199
Used Toyota Camry
1,043 Great Deals out of 74,329 listings starting at $295
Used Chevrolet Malibu
1,083 Great Deals out of 71,438 listings starting at $2,499
Used Ford Focus
763 Great Deals out of 53,007 listings starting at $999
Used Nissan Maxima
285 Great Deals out of 23,298 listings starting at $799
Used Chevrolet Camaro
416 Great Deals out of 30,919 listings starting at $3,550

Used Cars For Sale

2017 Ford Taurus For Sale
5,105 listings starting at $14,532
2016 Ford Taurus For Sale
28 Great Deals out of 1,882 listings starting at $13,000
2015 Ford Taurus For Sale
39 Great Deals out of 1,454 listings starting at $9,995
2014 Ford Taurus For Sale
54 Great Deals out of 1,205 listings starting at $7,900
2013 Ford Taurus For Sale
52 Great Deals out of 1,315 listings starting at $5,825

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.