brickb!tch
Member
- Joined
- May 8, 2020
Hello! I have recently completed a b230ft swap on a 1992 244 and am having some strange problems. The engine is from my old 1991 940 t. I took the engine and trans out, did every gasket I could think of, as well as the accumulator mod. Both cars use LH2.4 so I used the 240 harness which was in great shape. After starting her up and driving around the block a few times the cel came on and gave me a code for the iac 223. The strange thing is that this code stayed on always while the engine was in the 940 as well, even after swapping 2 different bench tested valves. I came to the assumption that it must have been the wiring harness in the 940, as it was a train wreck. The 240 doesnt idle well and exhibits the same hiccuping idle and increasing Rpms in park and neutral that the donor 940 did. I did the obd test and could hear the valve functioning .
Here are things I have checked:
Smoke tested for vacuum leaks
A few different Iac valves
Unplugging iac, car acts the same
Unplugged maf, the idle went very high and I had no throttle control
Checked timing
Tried 2 different NA ECUs (only ones I have access to) and the car would barely keep running
And here are some engine specs:
15g
Blue hi z injectors from a s70
Compression is 160-165 across all 4
Vacuum at idle is around 13-16 at 6000ft elevation
Ngk copper plugs gapped to .028
Egr deleted
Ac deleted
The one commonality between the two cara that keeps popping in my head is the 560 ecu from the 940.
Anyone have an idea of where I should go next? Thanks
Here are things I have checked:
Smoke tested for vacuum leaks
A few different Iac valves
Unplugging iac, car acts the same
Unplugged maf, the idle went very high and I had no throttle control
Checked timing
Tried 2 different NA ECUs (only ones I have access to) and the car would barely keep running
And here are some engine specs:
15g
Blue hi z injectors from a s70
Compression is 160-165 across all 4
Vacuum at idle is around 13-16 at 6000ft elevation
Ngk copper plugs gapped to .028
Egr deleted
Ac deleted
The one commonality between the two cara that keeps popping in my head is the 560 ecu from the 940.
Anyone have an idea of where I should go next? Thanks