89 allante computer stops working while driving and sounds like transmission start to slip until it comes back on

Asked by ladydrip Feb 13, 2015 at 05:16 PM about the 1989 Cadillac Allante FWD

Question type: Maintenance & Repair

6 Answers

16,035

The problems may not be related. Have the transmission checked first. Has the filter and fluid been changed as often as they should.? What functions of the computer stop working? The center stack of gauges do fail with time. Dick Hussey at Allante Source keeps a good supply of these on hand.

3 people found this helpful.
Best Answer Mark helpful
180

My 89 Allante is doing the same thing. The engine control system fault light illuminates on the DIC and the transmission starts to lock up and slip. Looking on line, it looks like an ECM issue. My transmission was rebuilt 16 months ago and had its yearly maintenance done just 3 months ago With no issues. I'm going to replace the ECM and hope for the best.

1 people found this helpful.
16,035

Before you spend to much money - contact Johnny Monzo at itsonlyluv@comcast.net He can diagnose the problem for you and most likely will have any parts that you need.

6 people found this helpful.
30

i just changed the oil on my 1992 Allante and the computer keeps telling me to change the oil, also, when it is hot outside, i live in Texas, the speedometer goes crasy showing numbers tha dont make sence,today , when i am trying to turn the AC on , the control board wont work, and i know the AC doens not have any problem.my email is cheflecoq@ gmail.com, if some one would be nice to tell me how i can fix it, thisbcar has 71000 original miles and runs so fast, it is a dream.Thank you so much. Phil 817 4754476 cheflecoq@gmail.com

3 people found this helpful.
10

I own Cadillac Allante 1989 model and its 3rd gear slips and taco meter marks up to over 4000rpm and it slows down and cannot run. I exchanged to a rebuilt transmission from the US Allante service in vain. According to manual,Allante's 3rd gear is operated by computer. So,please let me know which computer to exchange to fix this helpless situation of no moving Allante. Please help as she is my forever wife. Thank you so very much in advance. Best Regards, Lt.Ogata Tokyo

1 people found this helpful.

I owns a 1990 Cadillac allante the transmission is down shifting after third gear I was told that it might be a fuse please help me find this fuse

Your Answer:

Allante

Looking for a Used Allante in your area?

CarGurus has 1 nationwide Allante listings and the tools to find you a great deal.

Postal Code:

CarGurus Experts

  • #1
    bobkat
    Reputation
    1,990
  • #2
    TransAm77
    Reputation
    350
  • #3
    D_Yaros
    Reputation
    340
View All

Find great deals from top-rated dealers

Search

Related Models 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. Content will be removed if CarGurus becomes aware that it violates our policies.