1997 2.2 WILL NOT DO 20MILES AN HOUR REPACED WIRES PLUGS CAT AND ALL INJECTORS ALONG WITH FUEL FILTER COULD IT BE THE CONTOL MODULE OR COIL PACKS CAUSING THIS -I HOPE IT NOT THE MODULE DO TO THE FACT ITS ALMOST 300.00 PLEASE HELP
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Re: MISFIRE ON ALL CYLINDERS
Hello, As you have probably already figured out , there are many things that can do this. here are some things you need to check. Ck fuel pressure. It should be between 41-47 lbs Ck coolant temp sensor. At operating temperature (194 degrees) it should be about 241 ohms, At 104 degrees about 1459 ohms At 70 degrees, it should be about 3500 ohms. If you want to ck the intake air temp sensor, you can use the same ohm readings as the coolant sensor. The coil packs are certainly a good possibility. They do fail. Ck your crankshaft position sensor. It should be 800-1200 ohms. If you can't figure this out yourself, you may need to find someone that has a scanner. This may help you.diagnose this problem. If you find this information to be correct would you please enter a "fixya" rating.
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Check wiring harness around and including plug to the coil pack. Also check fuel pressure with vehicle running. I'm not sure of the specs but, Iit should be around 35 to 40 psi. at idle, and 50 to 75 at higher RPM's. I've seen Fords run with a bad fuel pump and demonstrate these exact symptoms
Dirty fuel injectors. Computer will show misfire on the cylinders that are malfunctioning. If injector cleaner in tank won't clean them, pull them all out and have a professional take them apart and cleaned. Each injector has a screen in it that can get plugged up. Think about Bro, all other stuff has been renewed.
P0300 Random/Multiple Cylinder Misfire Detected, the 304 is for cylinder number 4 any of these could be wrong If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.Random misfires that jump around from one cylinder to another (read: P030x codes) also will set a P0300 code. The underlying cause is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold or unmetered air getting past the airflow sensor, or an EGR valve that is stuck open
Causes: - Improper spark plug at cylinder #1 - Insufficient compression at cylinder #1 - Incorrect fuel pressure - The injector circuit is open or shorted at cylinder #1 - Fuel injector #1 may be faulty - Intake air leak
If there are symptoms such as the engine is stumbling or hesitating, check
all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending
on how long the ignition components have been in the car, it may be a good
idea to replace them as part of your regular maintenance schedule. I would
suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable).
Otherwise, check the coils (coil packs). In some cases, the catalytic
converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter
needs to be replaced. I've also heard in other cases the problems were faulty
its a random misfire if it had a number at end instead of 0 e.i. 1 that would indicate number 1 cylinder misfired/ but 300 with no other codes can be multi reasons check spark plugs and wires--coils--clogged injectors--fuel filter--fuel pump--bag gas(water) partial clog cat converter these are a few but best to start with plugs &wires