Cant figure it out- idling like crap
 

About a month ago my motor got blown due to FI.
I ordered a new motor and returned my car to stock about 4 days ago. Here is the kicker.
I was driving today and my car stalled in traffic. I started it back up and it is idling rough and a loud knocking sound is coming from the passenger wheel. I checked the coils, sparkplugs and checked for vacuum leaks; All of which checked out fine unless I'm missing somthing.:banghead:

Later i cleaned the MAF sensor and the car ran good for about 10 minutes, then back to running like crap.

ok I ran a test and got these error codes
PO113
PO171B
PO300B
PO507
PO302
I changed the coils and wires and the car is still shaking while idling. It seems to rev fine, but im still getting a misfire.

Is the motor mount loose on the pass side? I have heard that the knock sensor likes the sound of an engine on busted mounts and will create all sorts of havoc. Like what you are seeing.

May I ask, why go back to stock? I figure it would have been a golden opportunity to boost higher.

The car just idles rough and the engine is seems to me rocking side to side slightly. I'm gonna check the motor mount today.

I went back to stock because the first motor blew lol.

SHould have order a Street Port Engine from RotaryPower and put your FI back on, what did you do with your FI? Are you gonna sell it?

I already sold it. I plan on using a different kit soon.

PETTIT or HYMEE? or HKS....<----pick this one :yesnod:

^^Maybe sometime in the future.

I added error codes from a test i ran today.

Any help?

PO113 - IAT sensor circuit high input ON 1 CCM
PO171B - System too lean ON 2 Fuel system
PO300B - Random misfire detected Flash/ON 1 or 2 Misfire
PO507 - Idle air control system RPM higher than expected ON 2 CCM


Should get you in the right direction...

Cleaned MAF
Replaced Coils, wires and plugs
Time to check fuel pump.

What did you do with the blown motor??

in my friends garage.

what actual damage was done to it? Apex seal or something more?

we have yet to open it. I just got pissed and bought a new engine which just happens to be pissing me off right now lol.

Just out of curiosity ... you do a compression test on it?

Pull the Injectors and check them as well, the car running lean could be from that which would lead to misfires....

I was experiencing this same issue recently with a supercharged RX-8.

That is if you Fuel Pump is good.