terribletaj

Hi,

Got a small problem, I have a series 1 RST with OFAB EFi, if I start the car from cold it runs fine, a little lumpy on idle but nothing to serious, once it's warmed up and driven for awhile, if I switch it off and wait around 15mins then switch it back on, it runs very lumpy, and wont rev properley, massively over fuels, chucks loads of black smoke on idle. Almost like the timing has been retarded loads

If I leave it for 45mins till its cold again, it starts and runs fine. I have changed the injector loom, injectors, leads, plugs, map sensor, TPS, CPS, idle mixture adjuster, IAT sensor, cleaned out the ISCV, reset the ecu, but still the same problem.

Anyone had anything like this?

Thanks

Matthew_M

have u tried disconnecting the cold start valve?

terribletaj

I didn't think the EFi system has a cold start valve, if i unplug the ISCV, then it wont even idle.

Matthew_M

sorry my mistake didnt read the thread properly

Karlos G

iTrader: (4)

Coolant temp sensor maybe, it thinks the engine is still cold so gives too much fuel

studabear

to be honest I would be changing the coolant temp sensor next the ecu 1

terribletaj

ok will give that a try, seen a cossie management conversion for sale, so might just get that instead of messing about with this system anymore

thanks

studabear

I'm starting to convert mine 2moz, I was at jano oddkidds yesterday, I now have 90% of my parts, another trip to msd i will have 95% so Its spanners out time