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Allante lights are not working as well as the heater

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1989 Allante windows not powering off after 10 minutes or door opened


The window switches would not drain the battery, but the lights could.
Is there a timer for just those lights, or all of the courtesy lights ?
How do the door switch lights get power ?

Aug 19, 2012 | 1989 Cadillac Allante

1 Answer

1989 Allante Engine Contro Fault light on Dashboard goes off fro a few minutes and then back on


PRobably from a fast Idle,
Check through the fault codes using the Driver Information Center (DIC)
Probably an"054". The engine shopuld Idle @750rpm. Anything above 900rpm will set the code in the DIC.Throttle Body switch position problem.

Jan 09, 2011 | 1989 Cadillac Allante

1 Answer

Allante


best to purchase a service manaul
most are found at a decent price on ebay

Jul 30, 2010 | 1987 Cadillac Allante

2 Answers

Battery runs down over night due to electrical short


Google for Allante Service Tech Bulletins, Battery Parasitic Draw. & what year ur car is.
1987 -88 have probs w/ Fuse # 8 & 25 + circuit breaker 24 - fuses under ashtray.
Theyre brilliant cars but now 20-25 years old & many not properly maintained...
If ur gonna own an Allante go Ebay & get a Service Manual.

Jul 30, 2009 | 1987 Cadillac Allante

1 Answer

!987 Cadillac Allante A/C problem


i put a 1990 allante trans into my 1988 allante, the used trans was working fine before i put it into my '88 allante. now it shifts very rough and has trouble going into park and the linkeage is very stiff.....someone told me there is a transmission control module that could be the problem or some kind of vacuum control module????any ideas???..........thanks, rodney

Apr 28, 2009 | 1987 Cadillac Allante

1 Answer

Where is the fuse for the horn on my 1990 cadillac allante


Is the horn not working? If so there is a horn rely that can be bad (to check it find a quite place with the car off, push the horn button down if you hear a click and the fuses are ok but, then you'll need to check the rely it self test light will work good for all the test, then there the wire going up to the horn button both will be under the dash that can be broken.

Mar 05, 2009 | 1990 Cadillac Allante

1 Answer

Heater core


Ok to replace the heater core in the allante you must first take the door off the glove box by removing 4 screws in the corners by the hinges. Remove the valence below the dash on the passenger side.

Now follow these steps

1. remove the radio module disconnect all wires and set it aside
2. Remove the bracket that holds the engine control module slide it out and away
3. Remove the duct control unit slide it down and out from under the dash
4 remove the screws that hold the duct work together, rotate to right and then down from under the dash
5. After the prior the heater core is in view. it has two 8 mm screws holding it in place remove them
6. Now go under the hood with a long extension loosen the clamps on the heater core
7. with at least a 12 inch thin bent flat screwdriver at a 90 degree angle loosen the hose and wiggle it off the heater core nipples
8. Go back into the cockpit and remove the heater core by sliding rearward and to the right
9. Angle hater core down and slide out.
10. reverse to reassemble.

Aug 11, 2008 | 1993 Cadillac Allante

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