1999 allante has a surge idle

Asked by Apr 12, 2016 at 12:20 AM about the 1990 Cadillac Allante

Question type: Maintenance & Repair

I can start the car and it will run but the rpm goes any
where from 1600 rpm to 400 or even dies. Mostly it dies
while driving it. If it sits there it'll bounce around tho. I put in
a new t.p.s. (throttle positioning sensor) fuel filter. And still
have the problem. I checked for vacume leaks but couldn't
detect anything. Also shes a lil smokey out of the tail pipe.
Its not burning oil or anything else. idk if thats part of the
problem or what. If anyone has ideas plz help me out. I
miss
this car and automation is coming up and love bringing the
car there. Thank you

5 Answers

Correction 1990** allente.

22,425

A cool car- but that has the Northstar engine, correct?- if so, you are in a world of trouble- it is better to get an earlier model with the regular caddy engine- and find one with the analog gauges- like I said, those later Allantes have some problems- good luck

No they didn't put the northstars in till 92 I believe. they started with the digital gagues on the 90's model but left 358 of them with the anolog dash. If I remember correctly. Anyway do U know what it could be now that it's not a stupid N star

22,425

well, you are fortunate to avoid the Northstar- I love the Pininfarina body, but I always figured it was a shame it had caddy mechanicals- now- it sounds as if something electronic is going wrong- something with the ignition or fuel injection- a wrench who knows Cadillac can diagnose it- that's the beauty of it being American, with an Italian body- you don't need a Ferrari mechanic to fix it! here's another Pininfarina-

245

You need to check your fuel injectors. It sounds as though one or more may be working intermittently?

Your Answer

Add photo

Related Questions

Allante

Looking for a Used Allante in your area?

CarGurus has 94 nationwide Allante listings and the tools to find you a great deal.

ZIP:

Search Cadillac Allante Questions

Cadillac Allante Experts

#1 bobkat
bobkat
Reputation 1,380
#2 D_Yaros
D_Yaros
Reputation 170
#3 jamnblues
jamnblues
Reputation 120
View All

Related Models For Sale

Used Cadillac Eldorado
349 listings starting at $2,450
Used Chevrolet Corvette
150 Great Deals out of 20,684 listings starting at $3,995
Used Cadillac DeVille
4 Great Deals out of 1,627 listings starting at $1,988
Used Ford Mustang
543 Great Deals out of 45,845 listings starting at $1,999
Used Mercedes-Benz SL-Class
45 Great Deals out of 2,814 listings starting at $4,530
Used Cadillac Seville
3 Great Deals out of 330 listings starting at $1,100
Used Ford Thunderbird
19 Great Deals out of 1,072 listings starting at $5,991
Used Chevrolet Camaro
243 Great Deals out of 31,194 listings starting at $369
Used Jeep Wrangler
262 Great Deals out of 16,543 listings starting at $2,590

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.