20 Most Recent 1990 Buick Reatta Questions & Answers


It may be a bad pressure switch or refrigerant temp sensor.

1990 Buick... | Answered on Jun 28, 2018


Make sure your battery cables are clean and tight. I had a tow in one day because I could not boost it. After the tow in they replaced my two battery cables and bingo no trouble after that.

1990 Buick... | Answered on Mar 06, 2017


Sorry to hear about your vehicle. First things first. When you say driving, what are you ding and where are you? such as; on the highway, at a stop light, making a left hand turn, coming to a stop. Second, when you say dies , do you mean your driving, your cars "shuts off" and your stuck in the middle of the road? and when you say stays dead do you try to start it? does your radio come on? are your light on or are they dim? all these are very helpful in diagnosing the root cause of this concern. also was there any work done recently to the vehicle? if the car is running and it dies a few things could be the cause. one, not that common, your engine could be starving of fuel, fuel pumps, filters and injectors and throttle body could all cause a fuel starvation. two spark cuts out. I work for volvo and i see coils (devices that increase spark) on 98+ vehicles literally crack in certain areas and cause rough idles, choppy acceleration (stuttering while getting on a freeway) but third and most likely battery/ charging system (these are just three common flaws there are lots of other little things associated with the electronic fuel injection system and monitoring that could and may well be the cause). the way your vehicle works is the battery stores a charge and your vehicle draws from the charge what it needs. on start up its battery power until your alternator reaches a certain speed (or the computer tells it to turn on) that supplies the power to the vehicles electrical system. now that i know you have an understanding i can suggest what, giving the limited info i have, i would look for first. if there is no rough idle apparent when the vehicle is warm that suggests fuel probably is ok and so is spark. now if your alternator cannot keep filling the battery up with an electrical charge, your car could just plain turn off. now this could cause a slow cranking when trying to start the car again and it may not even start. but as to why it will come back to life after a few mins or few days is interesting. check connections at the battery because that will prevent the flow of electricity. make sure its clean of dirt and paint too. take a wire brush and clean it. also is there anything white or powder-like on the terminals? oxidation causes a poor connection. that can be cleaned with spray cleanser from auto parts stores or scrubbing with baking soda and water but thats my guess without having the car to test. please post what you find out about your car.

1990 Buick... | Answered on Dec 18, 2015


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1990 Buick... | Answered on Jul 25, 2014


Don't understand ......the fuel metering is done by the ECM. You must drop the gas tank to get to the fuel pump.

1990 Buick... | Answered on May 21, 2014


There are two fuses
one feeds power to the radio at all times to keep the clock correct.
The other fuse is for power when you turn it on, that one might be blown.

1990 Buick... | Answered on May 21, 2014


The unit in the dash with the buttons gets dirty. You can remove it from the dash, take it apart and clean the pads under the buttons and I have had 100% success fixing the problem

1990 Buick... | Answered on May 21, 2014


You could have a bad relay in the start circuit. The relay is there because of the security system. If someone tries to jump the car to steal it, the alarm will disconnect the relay and the car will not start. I believe it is in the relay box in front of the air cleaner

1990 Buick... | Answered on May 21, 2014


I doubt it,, but I'll do some checking for you,, most master cylinders and boosters are on the firewall on the drivers side, under the hood,,

1990 Buick... | Answered on Dec 19, 2013

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