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Engine Specific Info and Questions => IDI Engine => Topic started by: 33B on August 25, 2022, 05:27:03 pm

Title: 1.6 Tach jumpy after 3k
Post by: 33B on August 25, 2022, 05:27:03 pm

1.6 tachometer jumping around after 3k rpm, or more exactly getting hung up.
Bad connection, bad tach, bad alternator?

Title: Re: 1.6 Tach jumpy after 3k
Post by: ORCoaster on August 25, 2022, 07:55:12 pm

I would go with bad connections at the alternator and maybe in the back of the circuit board.  If You pull the cluster out you can put a direct connection to the signal of the tach and determine if there is a problem with the circuit board that way. 

Hard to determine if the Alt signal is wonky without an oscilloscope I think.  No idea how to check that unless it is just a continuity check with a meter.

Title: Re: 1.6 Tach jumpy after 3k
Post by: 33B on August 29, 2022, 03:37:07 am

Corroded male connection on alternator.
Thanks

Title: Re: 1.6 Tach jumpy after 3k
Post by: ORCoaster on August 29, 2022, 09:45:42 pm

Don't you just LOVE those simple fixes?