Hotrod convertion

[cvan1939]

Hi got it to run by mistake while checking wiring I pulled the vacuum line off and forgot to put it back started it was running ruff and backfiring reset the timing and got it to run better had to wind the idle screw in a few turns to get it to idle and noticed that the hose was off put it back on and it stalled took it off again and started it again tried to record a log but tablet went flat tried with laptop but couldn't get coms so give up and I'll try again tomorrow night must be still over fuelling too need so much extra air.
Charlie

[vlt304]

was it the map sensor hose that was off? it might be to lean if that is the case.

[Holden202T]

yeah, no map sensor connected will make it run richer!

[antus]

Yeah map readings of 100kpa (atmospheric) will be treated like wide open throttle, which needs a lot more fuel than idle.

Actually I did notice that the logs the start attempts showed 90->100kpa but I wasnt sure off the top of my head what norm was, and didnt consider the hose might be off or leaky.

[cvan1939]

No it was the mastervac or brake booster hose map sensor was conned after taking to a mechanic friend the thinking is that the iac is blocked or not working
Charlie .

[delcowizzid]

The iac could have a and b coils wired wrong there was two wiring pinouts of the square plug iac I found when wiring the 808 harness to the tpi iac. It will stuff the idle

[Dylan]

Someone recently had something similar on here with that.

[delcowizzid]

I also fitted the vn coolant sensor instead of the tpi version as it was a big weird sensor that I never confirmed acted like the vn one so was easier to just swap it out

[cvan1939]

Hi the iac has four wires that are in a square pattern and marked A high and low and B high and low I have removed the throttle body and it's not blocked but the iac may not be opening enough I have recorded another log with it running with the

thursday run.xdl

(115.25 KiB) Downloaded 338 times

hose off

[Dylan]

Put it in diagnostic mode with engine off but ignition on and the pintle should extend fully (will fly out if the solenoid is removed from the throttle body)