20 Most Recent 1993 Buick Regal - Page 2 Questions & Answers

Code 26 is for a problem with one of the quad drivers inside the engine computer, or the wiring harness, and code 42 is for a problem with the ignition module or the control. You'll need a shop manual with the testing procedures for each code to proceed.

I would check the bulb for the lights, one of them is shorted to ground. that or the wires someplace else that go to the lights.

I don't list a vac modulator for the transmission for your car. I think the last year it was used was around 1985.

If it has one You open the hood & look on top of the transaxle-- just to the right, of center, of the hood opening It will be on top & to the left of the transaxle end cover & have a tube & small short hose going to it. Under the hood or on the radiator cross support, should be a vacuum diagram as well

god morning check the rails if there is any thing blocking the sunroof way, or the motor of the sunroof might be broken. but mostly the problem is from the rails. have a nice day

Clean throttle body,fuel filter,air filter.

Good morning, go to the nearest car wash and dry your car engine with air, then park it and put carton below it, then check the lower hose first where it has the clip, if its ok then take off the radiator and let them pressure it, if nothing let me know, have a nice day

The 3.1 engine is in the oil pan, the 3.8 engine is in the timing cover.

hi, I use to have the same problem I had to change engine electrical wires, then I had to change the crank sensor and the module ( destributer ) first let him check the complete wires installation then if they are good let him change the crank sensor

Its your turn signal switch in the steering colum. just pull your steering wheel and then the switch. I didn,t want to pay $80 for a new one, so I fixed it with bondo! That was about a year ago...still working fine.

Again, check THE WIRES going to the crank sensor, they run under the engine and cook themselves together.

Its probably the wires that go to the speed control, on top the transaxle, by the firewall,passenger side. The two wires run under the motor and get tortured with heat and oil and will short out. Check the connections also , they will corrode and lose connection.

is it 3.1 or 3.8? A common problem with these motors is the two wires that run from under the coil packs, under the engine, and to the crank sensor on the rear of the block, next to the firewall,driver side. They cook themselves under the motor, and start intermittently shorting out, at speed, and will get worse and worse. The speed control wire will do the same thing, but the speedometer will quit working, and it will go into limp mode.

Take out the radio

Any evidence of coolant in the oil? The oil will have a milky brown appearance on the oil dipstick. If the engine is a 3.1L, the intake manifold gaskets are a well known problem. Aftermarket gaskets are a better fit-not so prone to failure. There would be driveability issues -rough running, poor idle, etc.-if the gaskets are bad. How much coolant are you losing? Any problems with overheating?

It could be a lot of things. Do you know for certain it has fuel in it? Have you checked to see if it has spark? Have you tried using starter fluid? If it tries to run on starter fluid, then you have a fuel issue. If it doesn't try to run on starter fluid, it is likely a spark issue. It is not uncommon for the ignition control module to fail on these cars. If you can remove it, Auto Zone and other retailers can test it for free.