Top 20 1991 Buick LeSabre Questions & Answers

check for leaking vacuum line. check the timing setting also check idle control senor

probably in the EVAC system not allowing the system to vent properly get a fault code reading first or you will just be wasting money chasing ideas

Sounds like the timing is too low - if it is electronic timing id check the computer with a code scanner - something not quite right tho... but you dont want to spend good money after bad but.... that can be a bottomless pit!

How To Install Remove Rear Door Panel 1st Design Buick LeSabre 00 05...

Sounds like you have a bad heater core or you have antifreeze leaking in the into the heater box. Maybe a loose clamp on the bypass hose or maybe you damaged the heater core tube when you installed or removed the bypass hose and now it is not sealing properly.

Make sure fuel filter is clean.

I believe they are 8 X 1.0 MM. They have to be long 3 or 4 inches. Parts stores do rent this tool. Free. You have to put down a deposit. You get it back when you return it.

No...one is your engine radiator ( the big one) which cools engine. The other is not a radiator..it is the air conditioner condenser that releases the heat generated from the air conditioning system cooling the interior of the car.

On the Accumulator close to firewall on pass side

probably unless something is in the track, does it continue down if you push down on it as it goes?

shoul be above the brake pedal...: FAQ How to read older GM codes for free

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normally this would indicate low refrigerant but cant be positive without more info ,try running a can of dye (leak detector through the system and see what it shows ,you can purchase at auto zxone or any parts store for under 20

if its in the transmission then the only way to know what is broken is to pull it out and tear it down. usually there will be more worn out than you think and need rebuilding. have you checked into a used transmission with low mileage to put in as you will have to remove the trans anyways, which will be cheaper than a rebuild or buying another car. unfortunately the final decision will have to be from you and feel good about it.

Pressure Control Solenoid--where? Transaxle--?? Have to drop sub frame on drivers side, to remove the side cover & get at valve body

do you mean the spark plug number that you use to replace the plugs or plug gap. the plug gap is .045". the plug number you can get the plug number from the auto supply store by application.

On a 91 Buick you can disconnect the negative battery cable for a minute to clear the codes.

Have to follow the diagram on the radiator support to restore all hoses

Check fuel pressure,check vaccum with a guage.....This is the best starting point in order to get that gremlin....

the price is 2.09 each gap is 0.060th