98 deville high rpms

5

Asked by Oct 13, 2013 at 11:15 AM about the 1998 Cadillac DeVille D'elegance Sedan

Question type: Maintenance & Repair

rpms jumping up to 1900 rpms after driving 10 to 15 miles will not come down when foot is removed from gas pedal. restart car, idles normally. has done this several times playing hell with the transmission when i start to slowdown ( apply brakes) still idles high

1 Answer

175

I'm not sure if it's the same problem, but at about 100,000 miles on my Seville it started to have a similar problem. If I was lugging the engine too much in 4th gear, particularly going up a hill the torque converter (I think?) would unlock, causing my RPMs to run higher. Like if I was cruising at 60, instead of running at 1600, it would run at at least 1900, sometimes more. My "solution" was to not lug the engine -- to kick it into 3rd heading up hills. That doesn't account for any strange super-high idle, though, especially because generally taking my foot off the gas actually caused RPMs to dip BELOW normal, maybe 1400 or 1300 at 60.

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

Search Cadillac DeVille Questions

Cadillac DeVille Experts

#1 kikero
kikero
Reputation 2,100
#2 Js08016
Js08016
Reputation 1,740
#3 Cynthiasmith
Cynthiasmith
Reputation 1,530
View All

Related Models For Sale

Used Cadillac Eldorado
340 listings starting at $2,900
Used Lincoln Town Car
32 Great Deals out of 1,851 listings starting at $600
Used Cadillac Escalade
246 Great Deals out of 11,005 listings starting at $3,000
Used Chevrolet Camaro
150 Great Deals out of 32,742 listings starting at $1,729
Used BMW 7 Series
195 Great Deals out of 6,107 listings starting at $2,999
Used Chevrolet Corvette
98 Great Deals out of 20,444 listings starting at $3,495
Used Ford Mustang
397 Great Deals out of 47,365 listings starting at $1,999

Used Cars For Sale

2005 Cadillac DeVille For Sale
220 listings starting at $2,890
2004 Cadillac DeVille For Sale
4 Great Deals out of 218 listings starting at $2,200
2003 Cadillac DeVille For Sale
219 listings starting at $2,800