Pontiac Repair: Crankshaft Position Sensor, crankshaft position sensor, fuel pressure regulator

Question
QUESTION: Exactly where is the Crankshaft Position Sensor located for a Pontiac 2005 SunFire (2.2L Ecotec)?

ANSWER: Hey Timothy:

The crank sensor is located in the side of the block just under the oil filer assembly back towards the trnasmission. It has a short harness attached to it and then that attaches to the engine wire harness. Good luck :)


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QUESTION: big problem! Gave up and took car to dealer. They said that the fuel pump wasn't working and wanted to charge me $900+. I changed it myself and am now getting gas. It still won't start so I replaced the fuel pressure regulator and ignition module, plugs (Ac-Delco OEM), plug boots, Crankshaft Position Module and fuel filter. It started to "sound" like it was going to start and then back fired out of the intake (?) into the air cleaner. What now? HELP! I'm running out of funds

ANSWER: is the security lamp on and or flashing with it back fires/tries to start? if so there is an issue with the pass lock secuirty system on this car. 9 out of 10 times it's the lock cylinder housing in the steering column that goes bad but it can also be a wiring issue or a body control module. does this have any kind of aftermarket alarm and or remote starter added to it? If so that can cause security lamp issues as well. if there is not a secuirty system issue with this the next thing I would do is a compression test on all 4 cylindeer and see what you get. it's possable this could have jumped time. and that will cause it to pop through the intake.. how are the spark plugs fouled out and or wet? does this have spark on all 4 cylnders? those are the things I would look at next..


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QUESTION: Spark at all four (new OEM)plugs. Fuel pressure reads 50 but not much fuel on the plugs (actually looked dry but last couple of threads were slightly damp) When I replaced the fuel pump the fuel in the tank was brownish and looked like it had had some oil in it that gathered in clumps that were thick. I emptied the tank and cleaned it out with clean gas and "Sea Foam". I had to use a rag in the tank to get rid the last of the oily substance. Put about 5 gallons of fresh gas in tank. Was thinking about removing the rail and cleaning the injectors with more of the "Sea Foam". I bought new "O" rings for all injectors in case I did decide to pull the rail. Is this something that best left to a professional? It appears that there are only 2 bolts holding the rail in place as well as the fuel lines and vacuum to the regulator.

Answer
Is that waht the root of the problem was here bad gas in the tank? If so it' is entererly possably that the injectors are gummed up what what ever that was that you found in the tank. you can take the rail off it is as easy as you said it is the problem may be if that substance is inside the injetors you will not be able to get it out. If it plugged up the inlet screens on the tips of the injetors that sea foam stuff will clean it but not the inner workings of the injectors.. The only things that may work is a pressure flush of the injetors with a a professional strength cleaning agent and a pressure cleaner hooked up to the fuel rail. Gm makes a new cleaning agent for injectors that I like to call injector drano but you need the right tool to make the car run off the stuff.. You may be able to find a auto parts store that rents tools and rent a injector cleaner they are ones that run off compressed air. Good luck :)