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Skipper
08-15-2008, 02:05 PM
1995 Prostar
EFI (throttle body)
675 hrs
2 yrs new to me

Earlier in the season I was having trouble with the idle running fast. I replaced the PCV valve. That seemed to resolve the issue. Somebody suggested taking the boat to have a diagnostic check done, especially because the boat is new to me.

What can I really benefit from a diagnostic check?

Jesus_Freak
08-15-2008, 02:13 PM
I was having a hot starting problem (http://www.mastercraft.com/teamtalk/showthread.php?t=17522), and a diagnostic revealed that I needed to load the latest EFI program patch. The update worked perfectly. For me, it was well worth the charge.

chico
08-17-2008, 07:38 PM
many things can be checked with a scanner,smooth ramping of the tps,water coolant temp,knock signal,spark timing,iac operation,injector pulse,rpm,dtc`s,system voltage,...