Help! 05 limited turbo pt crusier 2.4L

[Kwinsor]

I've had this car for a little over a month, I have had the check engine light on for almost the whole time. Ive replaced the camshaft sensor , spark plugs, wires and fixing to replace a power steering switch! But my cylinder 4 keeps misfiring and sometimes 3 will also. Oh and also replaced the valve gaskets and the o rings for the spark plugs. I am so over this check engine light and don't have the money to take to an auto mechanic. Any suggestions on the constant misfire for 3&4? Thanks!

[crusofthebisquit]

multiple cylinder mis-fires can be from bad gas in many cases....especially after replacing as much as you have. As far as the light......you need to give us what code is up.

[ptcruisersteve]

When you removed the intake manifold to replace the spark plugs did you replace the intake manifold gaskets?

Have you checked for intake manifold leaks?

When you replaced the spark plugs did you do a compression check on all the cylinders? you might have a bad valve. How many miles do you have on it?

Did you have the cylinder 3 &4 misfiring problem before you replaced the spark plugs and wires?

[Kwinsor]

The codes are p5103 for the power steering pressure switch and p304 for the random 4misfire. We did everything you asked except the compression. And the problem with the misfire was happening before we changed spark plugs and wires. The spark plugs that were in it looked like they hadn't been changed in years. And also we ran seafoam through the fuel system.

[CREWZIN]

P0304 isn't a random misfire. It's only for a single cylinder.

Error Code P0304 Cylinder 4 Misfire Detected.

P5103 is not the Power Steering pressure switch. These are:

P0550 Power Steering Pressure (PSP) Switch Circuit
P0551 Power Steering Pressure Sensor Circuit Range/Performance
P0552 Power Steering Pressure Sensor Circuit Low Input
P0553 Power Steering Pressure Sensor Circuit High Input
P0554 Power Steering Pressure Sensor Circuit Intermittent

[Kwinsor]

I meant p551 sorry I looked at a different part to the paper when I typed it. But it is a power steering pressure switch. But I'm trying to figure out some probable causes of why im having the misfire in cylinder four and sometimes three? 117,000 miles on it. Could my coil pack go bad and only affect certain cylinders?

[ptcruisersteve]

On the misfire issue I would suggest you might want to check the PCV valve hose. Make sure it has no cracks and its not leaking from the fittings on both ends of the hose.