Replaced The IAC, no change. Now I'm really stuck!

 

Is it possible, there is water in the fuel line or rail. Can the whole system be purged?

 

After I replaced the first correct Bosch MAF I was able to drive no problem, although it wasn't running quite right as I couldn't floor it. I did manage to run a full tank of fresh gas through the system, fill it up again and burnt about a quarter tank of that before things started get haywire. Limp mode, and the ultimate demise to no just started and stalling. I've replaced the fuel pump, I think the fuel system is the issue, I guess I'll try and replace the fuel rail.

 

If you suspect fuel delivery may be the cause of your problems, I would check the fuel pressure and make sure it's holding good pressure. I don't know if you have a pressure tester, but I got one a long time ago at Harbor Freight for about $20 and it works fine.

Not being able to floor it does point to a lack of fuel pressure. You may want to check the power and ground to the fuel pump.

Also, did you remove the hoses that connect the IAC to the manifold? There is a chance that the passages in there are full of gunk. That can make it run just as terrible. It basically makes the IAC useless because it's not regulating the airflow. I'm not sure about Rover's, but Ford's IAC passages LOVE to clog!

 

I replaced the fuel rail and injectors.. no change. What's the best way to compression test?

 

I have 5v on the MAF and TPS

 

I'm not sure I can be any help here but I keep coming back to starts and then stalls, and trying to think what happens at startup that then stops... Maybe this is my second dumb question but do you have SAI? I can't see your specs on my phone.

 

Don't have SAI

 

the IAC plug and one other plug can be exchanged accidentally (i dont remeber what one, but i did it once), have you check all the connections with the manual

 

Have you tried disconnecting the purge valve vacuum connection to the intake to see if that code goes away? Of course, when you do, you'll have to temporarily plug the open connection on the intake.