20 Most Recent 2000 Pontiac Bonneville - Page 4 Questions & Answers

Loose or missing gasket on the drain plug, loose oil filter.

The air pump is above the muffler heat shield near the rear suspension parts.

Try locking and unlocking the drivers door with the key.

The wire between the gauge and the tank is the problem. It may just be loose on the connector stud of the sender. or shorting to the body somewhere.

Where the top radiator connects to the engine. That is where the thermostat is.

Watch the temp gauge when the electric radiator fans come on. The temp sensor that controls when the fan comes on may be faulty.

Look in the radiator to determine if the brown stuff is rust or oil. If it's oil then the head gaskets are blown and the heads will have to go to a machine shop to be ground flat. Do them both even if one side is ok, or the engine will never idle right. If it's just rust, install a back flush kit and blow out the rust. Turn the heater on when you back flush to get the rust out of the heater core. Replace the thermostat and anti freeze. Pressurize the radiator and make sure it holds. If the pressure drops off then look to find where the leak is (head gaskets)

The fuel pressure regulator has a check valve in it ti keep up fuel pressure when the engine is not running. There is a test port on the regulator to connect a fuel pressure test gauge.

Sounds like the blend door motor isn't working.

A junk yard is the first place to start.

Over haul time. Hopefully you won't need a lot of parts to fix it. If it has so many bad parts that it can't be repaired , a short block may get you back on the road . In any event the price will be hefty.

The heater core can be plugged. The control valve that regulates the amount of water that enters the core can be plugged or inoperative.

Could be broken springs at the front.

you must remove door panel to access window.

Here's a link to your belt pattern. Repair Guides Engine Mechanical Components Accessory Drive Belts...

what about the ignition coil or crankshaft sensor. with h.e.i spark tester you will find the defect coil hope it helps

It sounds like a bad connection somewhere, check the battery cable connections for corrosion and tightness, both ends. It could be the starter, starter solenoid, starter relay, neutral safety switch or ignition. Try moving the shift lever to the "N" position and see if that helps. When you say you have a dead key, do you mean you have no dash lights, (oil pressure light, battery light, things of that nature) no clicking, no nothing?

It should be at the engine end of the upper radiator hose; This hose should connect onto a fitting called a thermostat housing.. Pull the hose off and remove the two bolts (sometimes three) securing the housing to the engine block. Lift off the housing and the thermostat will be seated there. Position the new thermostat exactly as the old one is.

Were either of those two items bad Did you test them FIRST before you replaced them You have to get wiring diagrams FIRST----BEFORE you walk to the car,study them to LEARN the circuit your about to TEST

Clogged fuel injectors maybe, there is a fluid for that. Could also be the overdrive gear in the trans. The overdrive gear is not hardened like the rest of the gears and can be faulty