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jerkiness....fan mod responsible?

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Old 05-04-02, 04:07 PM
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jerkiness....fan mod responsible?

I did the fan mod (ECU grounded to switch) and have noticed something weird: when I turn the switch to 'on' (grounding the wire) the car begins bucking and jerking badly, but only under light load conditions, i.e. if I am on the gas the jerkiness goes away. Same thing now happens (didn't before the mod) with turning the a/c on, so it must be cooling fan related.....anyone else have any similar trouble?
Old 05-04-02, 04:10 PM
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if the ecu sees load it raises the idle, and if it sees load and there is'nt any it can get confused

mike
Old 05-04-02, 04:49 PM
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The odd thing is, it just started doing it.....I have had the fan mod since last year.......
Just for grins I disconnected the wire to the ECU and have been driving all around, and...everything is working fine, no jerking.....
I wonder what that lower temperature sending unit
(from a Miata) part number is.....I think I would rather have the fans come on at a lower temp, rather than run longer with the car shut off anyway....or else do the OTHER fan mod, where you can simply turn the fans on anytime you want........
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