Hello. I have my 2007 toyota matrix with 277,000 miles. I've changed the tps sensor with housing, the camshaft, the crankshaft sensors, new ignition coils and spark plugs, and it drives beautifully, but when I park it, it shuts off and check engine goes on saying misfire on all 4 cylinders. Not sure what else to do. Please help and advise. Thanks.
when I park it, it shuts off and check engine goes on saying misfire on all 4 cylinders.
"When I park it" is not very specific. Are you saying that the engine won't idle? Is that with the transmission in or out of gear, assuming it is automatic? (You did not specify.)
I've changed the tps sensor with housing, the camshaft, the crankshaft sensors, new ignition coils and spark plugs,
Did any of those parts actually test as being bad before you replaced them? Did you use OEM parts?
Codes are. P0351, p0352, p0353, p0354
Those are not misfire codes, they indicate a problem with the ignition coil circuitry in each cylinder. You can find diagnostic procedures for those codes at the link below:
I've changed the tps sensor with housing, the camshaft ....
Like Scotty always says, don't guess! Throwing parts at the problem will only make you poor, and usually, no closer to understanding the cause of the problem. On top of that, you're throwing more variables (like questionable/bad parts) into the equation, making the problem worse for yourself. At least test the parts to see if they are actually bad. Coils can be easily tested with a meter in a few seconds. The parts cannon approach will often end up costing you more than a mechanic, especially if the problem ends up being something like a broken wire.
Not sure what else to do
You can always turn to the service manual.
Codes are. P0351, p0352, p0353, p0354
You can look up trouble codes on obd-codes.com
That will give you the gist of what they mean. For information more specific to your make and model, the service manual is the best bet.
The codes mean your ECM is missing ignition confirmation (IGF) signals from all cylinders.
If the ECM does not receive any IGF signals despite transmitting the IGT signal, it interprets this as a fault in the igniter and sets a DTC.
Here are troubleshooting procedures you need to follow for your trouble codes.
Since it happens when you shift gears, and it happens on ALL cylinders, then the problem is very unlikely to be the plugs/coils etc.
It sounds more like an electrical issue like a short or bad ground which is being triggered by shifting to park.
All IGF signals are routed through a junction connector, before going back to the ECM. You could try measuring them there.
Unfortunately, this could end up being very complicated to diagnose, requiring experience with electrical troubleshooting, reading schematics, using scopes etc. If you don't have the necessary background, then I recommend take it to a specialist diagnostician. They cost an arm and a leg, but they get it right the first time, and they don't change everything under the sun.
Codes are. P0351, p0352, p0353, p0354