• Advertisement

Jumping Tacho 4JB1t

Getting the best performance from your Isuzu, the in's and out's

Jumping Tacho 4JB1t

Postby NPILE4JB1 » Thu Jul 20, 2017 7:21 am

Hey all. Having some problems recently with my 95 Rodeo tachometer jumping allover the place.

I understand there is the sensor in the front of the pump but before i go changing that or pulling the dash out, I was wondering if anyone has had this same problem and could point me in the right direction to save some time. Thanks
Isuzu Baby
Posts: 8
Joined: Fri Apr 18, 2014 4:28 pm
Age: 30
Country: Australia
City: Normanville
Vehicle: TF Rodeo 4JB1T

Re: Jumping Tacho 4JB1t

Postby SamMu93 » Sat Aug 05, 2017 7:58 pm

My last 2 tachos have done this... im sure one of those others would have better suggestions but if you dont want to replace the cluster, you could replace components on there (capacitors etc) or disconnect it and clean it up with electro clean... both of mine developed Parkinsons after 200k...
Isuzu Junior
Posts: 140
Joined: Sun Jan 18, 2015 3:22 pm
Age: 29
Country: New Zealand
City: Wellington
Vehicle: 93 Isuzu Mu 2.8 TD
Rodeo 3" dump pipe off turbo
2.5" Exhaust to tip
Bighorn intercooler
Tweaked fuel pump
Boost tap (15psi)
Egt monitor installed
Rear: 2" lifted leaf springs
Front: Wound torsion bars, dropped front diff, flipped ball joints, cut upper bump stop

Re: Jumping Tacho 4JB1t

Postby Bossies » Wed Sep 06, 2017 11:31 pm

I had a similar problem that got progressively worse until the needle stopped moving completely. It turned out to be a loose earth connection on the wiring harness just behind the wiper fluid bottle.
I'm only here for the information
Posts: 1
Joined: Wed Sep 06, 2017 11:21 pm
Age: 29
Country: South Africa
City: Pretoria
Vehicle: Isuzu KB280

Return to Engines and Exhaust

Who is online

Users browsing this forum: No registered users and 2 guests