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If you clear the codes, which code comes back first?
Was the tune up parts replaced when this motor was installed?
the p1311, and p0101, i think have been there everytime, the p0300,showed up also today
And the spark plugs?
Were new ones installed when the engine was replaced?
that i am not sure of , i bought the car fro the original owner. i know it was a complete crate engine , as far as the other things , i can not verify
Ok.. please listen very carefully
This P1311 code is doe the diagnostic sensing module
Here is the definition for this code
P1311 ION Sensing Module Secondary Line 1 Circuit MalfunctionPossible Causes Secondary Line 1 circuit is open or shorted to ground Secondary Line 1 circuit is shorted to system power (B+) ION sensing module has failed
This is for the ignition system
We have seen SEVERAL of these vehicles with this code caused by incorrect spark plugs
This is VERY important that you double and triple check this
The correct plugs for this vehicle are
Nippon Denso K16PR-P11
If the WRONG plugs are installed
replace them with the correct ones ASAP!
Even if the engine does not run any better
This is a good STARTING point
This needs to be checked and verified good before going into a lot of other diagnostics for this code
Once this is taken care of and this code no longer appears
then we check fuel delivery under a load
One thing that I wanted to recomend that I think that might help
If my memory servs me correct
I have come across this issue before in the past
IT was switched o2 sensor connectors
The o2 sensor connectors were switched from side to side
Causing a condition simliair to this
This was on a vehicle with a motor that has been replaced
just like yours
I beleive it was the rear o2 sensor connectors
so your going to want to check that
after that is checked and if there is still an issue
we go after fuel pressure
It should be close to 45 and 55 psi under a load
VERY important. This should not be overlooked
IF this checks out good and the engine STILL bogs under a load
We watch the FRONT o2 sensor signals WHILE accelerating WITH the engine bogging down
Under full throttle
The engine NEEDS a LOT of fuel
So the o2 sensors should go rich
.8 or .9 or so under wide open throttle
If this does not happen
then we check the new mass air flow sensor signal
Also, check the air intake snorkle from the air filter housing to the mass air flow sensor
Check for any cracks or rips as this can allow for air to enter the engine that is NOT acconted for buy this mass air flow sensor
which will not be accounted for by the computer
and cause a MAJOR lean condition under a load
This can and will cause your mass air flow sensor circuit code.
check for any air or vacuum leaks with the engine at idle which will also throw this mass air flow sensor code that you are having
The P0300 just means the engine is running rough
well guess what
We knew that right?
We did not need the computer to tell us that the engine is misfiring when it is bogging down
So my point it
That code does not really help us
So we need to focus on the two other coes
P1311 and P0101 codes
Does that make sense?
Does that help?
wow thats a lot, but at least i know where to start
Yeah.. I hope this helps!
Also, be sure to double check the timing marks
Just to be sure
Be sure that the timing belt did not jump any teeth as this can cause MAF readings and your P0300 code
Does this help?
If so, let me know
If you have more questions, that would be fine too
just let me know
yes it helps, i will work with this , and see what i can find out
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