Hey Bernd
I didn't know that the IAT and CTS would affect a cold engine on startup,
enough to make it sputter anyway.
This morning I disconnected the leads to the IAT and CTS and the engine
started perfectly (different story when it was warmed up though :-) I
should have disconnected one to eliminate the other as the problem, but I'll
do that tomorrow.
Any idea on the cost of a new CTS and should I use anything on the threads
when installing? Now to go out and try and get rid of the 22 and 23 codes
stored. If I disconnect the battery overnight that should do it.
Thanks
-Jay
> Common issue. There's a few items that cause this:
>
> (1) Fuel Formulation (There's a TSB out on this as well)
> (2) IAT Sensor getting too hot (in hotter weather, it heats up too quick
and
> can cause lean out conditions - sputtering)
> (3) Coolant Temp Sensor (When they start to go bad, they also cause lean
out
> conditions)
>
> - Bernd
>
> In the last few days in the morning when I start my truck it starts first
> crank but sputters for about 2 seconds before reaching fast idle. A
little
> while ago I've done the usual, battery, plugs, wires, cap, rotor, IAC
etc..
> When it's warm, no problem. Any ideas? The O2 sensors would have no
effect
> on this would they? (I only have 53K kilometers (33K miles)on my 97,
318 )
> It seems to have just started since we've been getting really hot weather.
>
> TIA
> -Jay
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