Question about Cars & Trucks
A P0305 code means that the the car's computer has detected
that one of the engine's cylinders is not firing properly. Did the codes appear after the new plugs/wires were installed? What about new Dist. cap and rotor?
Did you use quality parts?
Check for vacuum leaks (including manifold gaskets) on Bank 1 (Driver's side).
Also swap Cyl.#5 injector with another cylinder and see if the misfire code changes.
Are you sure #5 plug is firing?It's possible the cat may be restricted, but I would first swap #5 injector with another cylinder and check for vacuum leaks.
A plugged cat/exhaust system will not set a P0171.I'd say first check the intake manifold gaskets (two of them) for leaks. There are other things that could be causing those common but pesky p0171 and p0174 codes. I would recommend you search the forums on those two codes as they're pretty common.
The P0442 code is likely not related
Posted on Feb 15, 2012
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Posted on Jan 02, 2017
Each of the plugs has it's own coil so they are under the swaure coil, you won't see traditional spark plug wires, look for sets of two wires headed for ~ 2.5 inch square block, three plugs can be seen in front of the large plastic air plenum, the uther three are underneath the plenum. Takes a real handy DIY person to do this as there are plenty of things to remove before the plenum comes off. Take good notes on how you remove things, I missed a lever that is part of the idle system and throught I messed things up bac\d, but when I located the correct place to attach the lever it was fine. Also be careful and not break a connector to the individual coils. I did, but was able to glue it together...
Posted on Apr 09, 2009
SOURCE: Check Engine Light
If the light isn't flashing, it is safe to drive. If it is flashing, then catalytic converter damage can result. Have a parts store check the codes for you and come back and post the code.
Posted on May 01, 2009
Your MAF may be dirty and needs to be cleaned or replaced. You may have a vacuum leak.
In the vast majority of cases, simply cleaning the MAF sensor does the trick. Consult your service manual for it's location if you need help. I find it's best to take it off and spray it with electronics cleaner or brake cleaner. Make sure you are careful not to damage the MAF sensor, and make sure it's dry before reinstalling
Inspect all vacuum and PCV hoses, replace if necessary
Check for a dirty fuel filter and proper fuel pressure
Posted on Oct 06, 2009
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