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Read the codes with an OBDII code reader. they are available at most part stores..........note: some parts stores will read your codes for free if you can get your vehicle there. once we know the reason for the check engine light we'll be able to go from there Thanks!
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Replaced spark plugs as codes said. ???? What code ? No code tells you to replace anything with testing . Hooking up a scan tool checking checking engine sensor data pid's . If you don't know this your best bet would be to take your vehicle to a qaulified repair shop . You could have a bad sensor , Mass air flow , a bad coolant temp sensor . Fuel system problem , fuel pressure an flow testing should be done . What are the O2 sensors doing ? are they switching from 0.2 to 0.9 millivolts ? What the fuel trims at ? Is the computer adding or subtracting fuel ?
The first thing you need to do is have the computer scanned for trouble codes to narrow down the possible causes. But that would require a code reader or scanner. Have you checked fuel pressure with a gauge ? Are you getting spark to the plugs ? Because of the moan from the pump, there's a good chance the pump has failed.
you are on the right track, start with replacing plug wires, then the plugs. first thing i would check. but when you replace one replace them all so you will not have to change a different one every few months. after checking these please let me know what happened, if more trouble shooting is needed i will help you. please let me know if you got covered or if i need to put a little more my brain power to help your horse power.
Is there an illuminated check engine light on the dash? That sounds like a failing TPS (throttle position sensor). Unless you have low fuel pressure! When (if ever) have you replaced the fuel pump and/or fuel filter? Are you running the correct type of fuel in the engine? If you have slow or sticky fuel injectors, a can of Seafoam might help!
As you have probably figured out by now, you will have to treat it as a no start and troubleshoot it when it fails to start. Until you figure out if you are loosing spark or fuel to the injectors when the engine dies you have no direction to go in.
I would first check condition of ignition system, wires, plugs etc, as well as have a fuel pressure test done, or at very least change fuel filter. Old plug wires and plugs tend to break down when under load especially, and a plugged fuel filter can restrict necessary flow of extra fuel for load condition as well. Certainly other things may come in to play here, but that is a good place to start.
To be honest, it could be many things. Simple first, check your air filter and fuel filter. They may be clogged. It could need a tune-up. This is spark plugs/coils, wires, distributor cap. If you have a check engine light on, get it scanned for codes. If not, you will have to try the elimination process. If it has been 70,000+ miles on the plugs and wires, change them. Your starter solenoid may be going bad. It could be fuel injectors leaking. The only way to know 100% is by testing everything and visually inspecting the engine. If you have anymore questions, ask us. We are here to help in anyway. Thanks for choosing FixYa.
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