1994 Buick Park Avenue Q&A
1994 Buick Park Avenue Question: intermittent starting problem: crank position sensor or fuel pump?
every once in a while my buick won't start. it will crank like crazy but not start. mechanic has narrowed it down to most likely either a crank position sensor or failing fuel pump. I don't think it's ever happened when the car was cold, it usually happens after it's been running for a while and i run into a store or something. after a few minutes of sitting there, the car will fire right up. car runs fine, no stalling, runs strong. any thoughts on which one it could be? thanks for any help. - add2718
If you could get some one to listen back at the tank and just cycle the key on and see if you can here the pump come on,You could take off the gas cap and carefully put a hose in the filler neck and listen for the pump.It should come on for a few seconds and then shut off till you cycle the key again or crank the engine.Crank ssnsors are also common on these motors,a scope or scan tool watching for RPM would help.Crank sensor should throw a code and engine light,the fuel pump will not. - ambler
Get the driveability test and that will rule out CPS sensor and pigtail. Also, fuel pump regulator filter may be corroded .....clean and reconnect. Crank sensor maybe bad and not working at 100%. Check 3rd cylinder.....could be missing and not delivering any spark. What is your fuel pressure while idilying, and revving? - Babygirl2