20 Most Recent 1989 Buick LeSabre - Page 3 Questions & Answers

Check on the inner side of each wheel to make sure there is no leaking fluid. If there is, check the lines leading to the brakes and replace them where needed (hose is cheap at your local autoparts store).

If it's not holding the fluid, it's coming out somewhere. Find the leak, fix the hose (hopefully) or replace the part (hopefully not).

That one is old enough that you should be able to disconnect the battery for a couple of minutes to reset the computer. I would not be surprised if the light came back on shortly after doing this. The cam sensors rarely fail. It is more likely that the magnetic "cam button" has fallen off the camshaft pulley. The button is what the cam sensor is looking for. If the button is missing than the cam sensor has nothing to read and the check engine light comes on. To check and see if the cam button is missing you can pull the cam sensor. Use a mirror to look through the hole. Rotate the crankshaft by hand with the key off for two complete revolutions. You should see the cam button move through the opening at some point. Good luck! I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

That one is old enough that you should be able to disconnect the battery for a couple of minutes to reset the computer. I would not be surprised if the light came back on shortly after doing this. The cam sensors rarely fail. It is more likely that the magnetic "cam button" has fallen off the camshaft pulley. The button is what the cam sensor is looking for. If the button is missing than the cam sensor has nothing to read and the check engine light comes on. To check and see if the cam button is missing you can pull the cam sensor. Use a mirror to look through the hole. Rotate the crankshaft by hand with the key off for two complete revolutions. You should see the cam button move through the opening at some point. Good luck! I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

The relay should be in the engine compartment on the firewall under the windshield. There may be several relays in a cluster and they are not marked.You would check the circuits the relay uses, or just replace it with a new relay. Some of the other relays can be switched for a test if they have the same type plug.

tune up,fuel filter,air filter,clog catalytic con.,coils.

Should be about 4. When you add 4, then park the car on a level surface, and wait about 15 minutes, and then check the level with the dipstick. The low line and the full line are 1 quart apart.Be blessed.

there is a pressure regulater on the fuel line under hood replace it if you have already replaced fuel filter.if that dont work you may need to replace your cadelistic converter on you exsost

check the fuel filter. Also pull the IAC valve and make sure its not clogged up with carbon.

this is interesting please inform to why so i can help you better and what is the fuel doing?

Does it crank? Or there's no crank no start? If it cranks safely get under the vehicle and bang on the fuel tank while someone holds the key in the crank position with the vehicle in park. If it starts it is most likely the fuel pump.

Hello

The engine and the automatic transmission in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems.

I would start at the starter relay have you ever changed your starter it may be that the brushes in the starter are worn way down preventing a good connection at times

Could be a faulty spark plug, or an injector, among other things. Could be a sticking valve too.

Maybe you need to change the gas filters or maybe try better gas or maybe change the fuel pump.