bouncing tach needle - 1998 T800

Discussion in 'Trucks [ Eighteen Wheelers ]' started by rank, May 23, 2014.

May 23, 2014 #1

rank Road Train Member

9,870

113,173

Feb 11, 2010

50 miles north of Rochester, NY

0

Sometimes it works. Sometimes it just sits there at 600 rpm. Anyone had this?

rank, May 23, 2014

rank, May 23, 2014

#1
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May 23, 2014 #2

blackcrowntrans Light Load Member

133

73

May 19, 2014

0

Have you adjusted the sensor at the bell housing.

blackcrowntrans, May 23, 2014

blackcrowntrans, May 23, 2014

#2
May 23, 2014 #3

rank Road Train Member

9,870

113,173

Feb 11, 2010

50 miles north of Rochester, NY

0

No. Would an out of adjustment situation cause an intermittent problem like I have?

rank, May 23, 2014

rank, May 23, 2014

#3
May 24, 2014 #4

blackcrowntrans Light Load Member

133

73

May 19, 2014

0

Yes or bad wiring to adjust the sensor loosen lock Down nut and screw sensor in until it stops this means you've reached the flywheel back it out a 1/4 turn -/+ tighen lock down nut Check for broken wires and loose connection sorry I took so long to answer

blackcrowntrans, May 24, 2014

blackcrowntrans, May 24, 2014

#4
May 24, 2014 #5

rank Road Train Member

9,870

113,173

Feb 11, 2010

50 miles north of Rochester, NY

0

Thanks I will check that and post the results

rank, May 24, 2014

rank, May 24, 2014

#5
May 24, 2014 #6

blackcrowntrans Light Load Member

133

73

May 19, 2014

0

Hopefully that will fix it keep us posted.

blackcrowntrans, May 24, 2014

blackcrowntrans, May 24, 2014

#6