20 Most Recent 2004 Buick LeSabre - Page 6 Questions & Answers

A stepper motor may be bad. Mine was. I replaced all of them, myself. I got replacements from Tanin Auto Electronix

I would be checking the oil pressure with a mechanical gauge . If you have used the correct viscosity oil the lifters should stop being noisy after a minute of starting the engine . If it is the pump then you will have to replace it but it may be a loose oil pick up line or loose pump allowing the oil pressure to escape back into the sump.

try replacing your ignition module the grease that keeps it from overheating has probably dried out

Synthetic cleans engine up is definitely a good choice. Your car will probably take 5w-20 or 5w-30 which you can get at any parts store

9-3 or 9-5 model?

The temp sensor, is a thermistor resistor supplying restricted voltage to the gauge depending on the heat of the engine, if it has gone faulty (close circuit) the gauge will read hot all the time. You need to find the sensor, generally near the top of the engine, thermostat area and unplug it, the gauge will then not read. Replace the sensor. (WHEN THE ENGINE IS COLD)

Easy mate! I bet if you take off your heater hoses to where they connect to your engine/waterpump, you will find that the hole will be clogged up with dirt, grime, and corrosion. Check your engine side too!

You have to remove the dash but it is VERY simple to do. Remove the fuseblock cover on the end of the dash on the passenger's side. Once removed, remove the screw holding on the end of the dash. Now, next to the glove box, to the right, remove the one screw on the bottom. Then remove this panel by pulling it out (it will now be held on by two clips at the top.) Now, looking at the temperature control cover, remove the two screws from the bottom of this. Pull it off. It also is held on by two clips. Now, below the steering wheel, remove the one screw from this panel (on the right). On the left there is a "plug" holding it in place, Pop out this plug. I think there are a couple of clips now holding this on at the top. Now that you have all of that pulled out, pop the dash out. At worse, it is held in with clips. Now that you have this out, there are four screws holding in the instrument panel. Take out these four screws. You will find one electrical cable connected to the cluster. Pop that off of the cluster and you now have the entire instrument cluster in your hands.

needs tune up.

more than likely a vacuum leak or PVC

Have you changed your fuel filter