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

237,325

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.
24,205

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?

24,205

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
237,325

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.
24,205

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

Your Answer

Add photo

Related Questions

Taurus

Looking for a Used Taurus in your area?

CarGurus has 20,434 nationwide Taurus listings starting at $699.

ZIP:

Search Ford Taurus Questions

Ford Taurus Experts

#1 Tom Demyan
Tom Demyan
Reputation 3,850
#2 lightGear
lightGear
Reputation 1,920
#2 dandyoun
dandyoun
Reputation 1,920
View All

Related Models For Sale

Used Chevrolet Impala
521 Great Deals out of 31,725 listings starting at $1,450
Used Ford Explorer
944 Great Deals out of 72,519 listings starting at $1,000
Used Ford Mustang
472 Great Deals out of 45,735 listings starting at $1,999
Used Ford F-150
2,194 Great Deals out of 206,316 listings starting at $1,499
Used Chevrolet Malibu
950 Great Deals out of 79,654 listings starting at $1,500
Used Honda Accord
813 Great Deals out of 84,287 listings starting at $1,050
Used Ford Focus
546 Great Deals out of 57,171 listings starting at $1,095
Used Toyota Camry
1,011 Great Deals out of 90,917 listings starting at $650
Used Nissan Maxima
306 Great Deals out of 25,213 listings starting at $999

Used Cars For Sale

2017 Ford Taurus For Sale
5,105 listings starting at $18,379
2016 Ford Taurus For Sale
66 Great Deals out of 4,972 listings starting at $15,784
2015 Ford Taurus For Sale
31 Great Deals out of 1,455 listings starting at $9,995
2014 Ford Taurus For Sale
50 Great Deals out of 1,483 listings starting at $7,650
2013 Ford Taurus For Sale
37 Great Deals out of 1,440 listings starting at $6,500

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.