Bentley says this indicates fuel injection problem, but according to an Art Benstein post I found, this can be misleading. Looking for ideas as to where to take my search to solve my rough running, poor idle and loss of power situation.

I pulled, cleaned and tested the IAC, replaced the fuel pressure regulator, new O2 sensor. Plugs are not fouled. As noted in an earlier post, it seems to run much better (quite good, in fact) for a few minutes until it warms up, then begins bucking and dies. A suggestion from a couple of you thought this might point to a bad coolant temp sensor. AMM is known to be good. I put it in my ex's 940 and it performed admirably.

Thanks for any and all help on this issue - Jim