[DeTomaso] NPC Ford 460 FI

[Jeff Cobb]

Retarded ignition timing can and did you check injector pulse time. Fuel psi should be between 30-40.
Sometimes the idle air control valve can leak too much air and lean out the cold run mixture.
Jeff Cobb
Cell 225-907-4514

On Sep 9, 2013, at 3:21 PM, gow2 at rc-tech.net wrote:

> Working on an 1990 Ford 450SD with a fuel injected 460. We have done a bit
> of work to it and it is running great; except when cold.
> 
> When it is cold (60 degree range) I can barely keep it running until it
> warms up. Then it runs great.
> 
> The Coolant temp sensor modifies the FI for fuel and timing like a choke.
> I replaced it and checked the old one. Have not ran it yet cold (too warm
> right now) but the old sensor not only ohmed out the same, but after
> putting it in the freezer ohmed out correctly to the chart.
> 
> What else is going to effect cold operation in that way?
> 
> Gary
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