Thread: 302 Stroker??

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Originally Posted by 34_40

Got the linkage "more secure" and took it out early Sunday morning before it got hot out. I think I want to adjust the Throttle Valve just a touch more to hold the shift points just a bit longer.

At one point on the ride I jumped on the highway and ran it up to 70 / 75 and suddenly my gauges go flukey.. Tach swinging all over the place, speedo the same - it was weird!! So I've been thinking about and I'm thinking it was the cooling fans freewheeling and acting like generators. I know others have had this happen but don't remember what they did to negate the effect. I've been mulling over installing diodes to stop the backfeed..

So anyone remember this saga and what was done ??? TIA

Well, Mike, we all know I'm not a wiring guru (surprise!) so I have no idea why your gauges went all flukey but freewheeling fans acting like generators probably would have never come to my mind. Just curious how the fans are controlled? Was your "flukiness" confined to the gauges or did it also affect how the car was running at the time?

Originally Posted by randyr

Well, Mike, we all know I'm not a wiring guru (surprise!) so I have no idea why your gauges went all flukey but freewheeling fans acting like generators probably would have never come to my mind. Just curious how the fans are controlled? Was your "flukiness" confined to the gauges or did it also affect how the car was running at the time?

Seems I also missed some of your questions. I have a relay which is controlled by a "sending unit" in the intake. At 180 degrees the S.U. closes to establish a ground circuit and the relay latches closed. At 165 degrees the S.U. opens and the relay also opens. I can't swear what all the other gauges were doing, but, I know the tach and speedo were going nuts! Once I got back to 65 and below.. the gauges returned to normal.. HTH..