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.

22,725

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

22,725

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

  • 1999 allante has a surge idle 5 answers

    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. (t...

    1990 Cadillac Allante

    -

    Maintenance & Repair

  • What are the Service & Repair Costs for 1993 Cadillac Allante? 6 answers

    Considring the purchase of a '93 Allante. What are service and repair costs if compared to a Corvette of the same vintage?

    1993 Cadillac Allante Base Convertible

    -

    Maintenance & Repair

  • Help with my cadillac allante 3 answers

    My 1990 allante has the check engine light on and when I accelerate it starts of very slow and you could hear a tapping noise in the motor

    1990 Cadillac Allante Base Convertible

    -

    Maintenance & Repair

  • 1987 allante digital instuments go off/on. When off no turn signal function etc. 1 answer

    1987 allante digital instumentation goes off/on. No turn signal function etc when this occurs. Car has only 20k miles

    1987 Cadillac Allante Base Convertible

    -

    Maintenance & Repair

  • electrical mechanic for 91 Allante California 1 answer

    Any good mechanic in Orange county, CA for Allante repairs bought it new in 1991 Needs electrical work, etc.

    1991 Cadillac Allante Base Convertible

    -

    Maintenance & Repair

Allante

Looking for a Used Allante in your area?

CarGurus has 2 nationwide Allante listings and the tools to find you a great deal.

Postal Code:

Search Cadillac Allante Questions

Cadillac Allante Experts

#1 bobkat
bobkat
Reputation 1,400
#2 D_Yaros
D_Yaros
Reputation 170
#3 jamnblues
jamnblues
Reputation 120
View All

Related Models For Sale

Used Chevrolet Corvette
656 listings starting at $4,450
Used Ford Mustang
8 Great Deals out of 1,260 listings starting at $1,000
Used Mercedes-Benz SL-Class
3 Great Deals out of 101 listings starting at $13,500
Used Jaguar XJ-Series
51 listings starting at $6,900

Used Cars For Sale

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.