wonky tach sensor

[TxDiesel007]

Driving the 95

symptoms, when i cold start and drive it, tach is super wonky for about five minutes. WHen truck is warmed up, tach works great up until it is over 2000 rpms, it jumps to 2200-2500 and back down, if i drop below 2k rpms, it works flawlessly, Did KDP a couple of weeks ago, tach worked well before that. Tried to set it to 50 thousands of an inch, by using a business card folded in half (read it somewhere that it was the rough equivalent, not sure where tho....)

also works flawlessly free reving, NO gsk yet, no mods other than exhaust and gauges...(came with the truck)

is my sensor bad, or is it the damper...

thanks guys!

 

[4x4dually]

FWIF, I just put a digital caliper on one of my business cards.....result was .026"

 

[TxDiesel007]

FWIF, I just put a digital caliper on one of my business cards.....result was .026"

folded in half?

that makes it 52 thousands... i must be off by a smidgen if thats the case..

 

[TxDiesel007]

reset it all and redid connections..

and problem solved.. thanks