1991 Buick Skylark - Answered Questions & Fixed issues

get a Chilton repair manual

How To Change A Waterpump - YouTube

? 2:19 www.youtube.com/watch?v=2GPYhQx6aQA Apr 6, 2010 - Uploaded by Scotty Kilmer I was wondering if it's a massive pain to replace the water pumpon a .... Is it possible for a water pump to only leak when a certain RPM is hit ...

Check your fuse if its a dealer installed CD player that's an up grade or after market it may have been hooked to your window fuse.

How do you know the fuel pump is good ? Did you do a fuel pump pressure test with a test gauge ? Did you test the fuel pump electric circuit ? Is the check engine light on ? There is a fuel pump relay under the hood engine compartment . The right front behind the headlamp are four relays , the one to the left is the fuel pump relay .I'll send a link to a video on testing the circuit !There also is a fuse in the wiring near those relays , it's power for the fuel pump relay ! Or you have a bad fuel pressure regulator ! A plugged catalytic converter could do this , need to pull the O2 sensor an do a back pressure Test ! Fuel Pressure Test Exhaust Backpressure Testing How To Diagnose Exhaust Restrictions EricTheCarGuy

You may not have one. Just remove the bottom hose, or remove the engine drain plug put a garden hose in your radiator idle the engine while adding water this will flush your whole system. let the car cool replace engine plug add your antifreeze and your set.

I think I would check the fuel pressure and the maximum fuel pressure from the pump. I would look to data if temp sensor , map, tps, lack of power can be cause by many things hope it helps

does the temperature gauge show engine is very hot? could be a stuck thermostat, did you check for engine codes? this can be checked for free at most chain auto stores and give you insights into the problem.

Al to b honest id replace the Solenoid and try again and hope it works ok....Sorry i cant b more positive.... iv a funny feeling it is worse.

From what u describe, I believe u have a starter and possibly a flywheel problem. When u turn the key to start the car, the starter gear engages w/ the flywheel, turning the flywheel, which turns the engine over. It sounds like the teeth of the flywheel and starter are worn, (they should mesh together smoothly) which would make the grinding noise u describe. If this is the case, the flywheel and starter would need to be replaced, and its a labor intensive job, as engine and trans. have to be separated to remove/install the flywheel. The rrrrrrr sound could be the starter gear spinning but not engaging. The starter gear extends on a shaft, then engages the flywheel. It is possible the gear isn't moving forward on the shaft, just spinning w/out engaging, making the rrr sound. So, I would recommend u remove the starter and have it tested (many parts stores will do this for free) and check the teeth on the gear to see if they are worn or broken. U will also be able to see a portion of the flywheel after the starter is removed, and u should check the teeth on it also. Let me know what u find, hopefully it's just a starter problem, and the flywheel is ok.

witch wire you have problems with

Put the hood up and with the car in a dark location, start the engine and look for a visible spark. If you see one, use a flashlight to see which wire is acting up and replace it. If that fails, turn the car off and check the wires to see if any are loose. Another possibility is to listen for a vacuum leak. You should also look for any other black hoses that are hanging in mid air and are not connected to their nozzles. Perhaps the mechanic bumped something accidentally.

do you have power and ground to the injector?do you have spark? a bad ignition module?

Check vacuum lines

You must have other worn parts like the window lift regulator.

Oil, OIl filter, Air Filter, Spark Plugs (leads too if old), distributor cap, rotor, fuel filter, Anti-freeze.That's for a full service. You could just do oil/filter and check everything else to save some money and only replace what is obviously bad.

Misfire, a misfire is when you have a low cyclinder contribution this can be from a coil pack not firing to a open injector that is not atomizing the fuel in the combustion chamber to a large vacuum leak that is affecting that paticular cylinder.so you have a misfire. High HC (hydrocarbons) fuel not being burnt.2 misfire that concern does the vehicle rough idle smoothes out at higher RPM? If this does check the EGR it simple car running rough at idle feel the EGR is it hot to touch ? Then the EGR vavle got stuck open. another way is pulling out a spark plug wire and checking spark this will determine if the coil is working for that particular cylinder if you do this you need to make sure you dont break the plug wire you will have to wait for the engine to cool down and loosen the plug wire out of the sparkplugs and get it ready for a engine running test.

Cars ping on hard exceleration or light/medium exceleration up hill or from take off but not at idle or declerating. I would check belt on front of engine and remove it to check alternator, water pump, power steering pump, a/c compressor clutch, idler/tensioner pullies for excessive play. Also check for exhaust leaks because sometimes they may sound like a ping and another thing you might want check is the catalytic convertor, the elment inside will come loose and rattle and this is notice more at idle and on a decel. If you tap catalytic convertor with hammer and you hear a rattle then replace catalytic convertor.

Replacing one injector is not good as the full set must be changed for best performance. the fault seems more likely with an overflow of fuel due to poor settings or fault in the fuel delivery.
It seems the fuel pump is the suspected part, you need to have a good calibration with a check for fuel leak or faulty gaskets. When the AC is ON , the power required is more and so the throttle opens up with more fuel. The firing intensity and the INGITION SYSTEM, the spark plugs must be checked. A look as the spark plug will indicate the firing and fuel condition. Also the exhaust analysis will give a good report of the un-burnt fuel which means a correction in fuel settings.

make sure the belt is tight on the altenater.. if it is then your altenater is brob. bad they will check that for you at the parts store. hope this helps

Fuel Pump