Jumping tach needle WTF!!!! - Toyota Nation Forum : Toyota Car and Truck Forums

87Camry5Speed · 11-18-2003, 12:21 PM

I performed a plug-and-play gen2 gauge cluster swap a week and a half ago so I could enjoy the benefits of a tach, but lately I'm noticing something awry with it.... It's hard to describe exactly when it happens, but the needle will jump up 500-1000 rpm under certain conditions.

It happened with the intermittent wipers kicked on ,and when the turn signal was engaged, and sometimes it will randomly jump during normal driving. All the gauges are working fine, and otherwise the tach is both a godsend and well behaved but why is it happening?

Any ideas? I plan to check that all the wire looms are properly inserted into the back of the cluster but other than maybe a wire short or something this one is kicking my ass.

Thanks in advance
Steve

Galvatron · 11-18-2003, 12:46 PM

Yeah, probably a loose connector or wacky contact somewhere, before I got my new cluster with the tach, and I had an aftermarket on on my dash, I didnt do all that great a job of wiring it up and sometimes it would come loose and jump all over the place.

rezzle · 11-18-2003, 02:03 PM

Re run the wiring to the tach with sheilded wire, and only ground one end of the shield.

WickedGen3 · 11-18-2003, 05:42 PM

i've got the same problem in my gen 3..the needle in the speedo.. it sometimes gets stuck in one place.. say if i go 45mph.. sometimes it stays there.. and i know i'm not going 45 b/c i usually go faster then 70 on the highway.. what can i do ?? thanks

87Camry5Speed · 11-18-2003, 10:21 PM

Well, the needle behaved today but it's the only time in the last week it did so... wickedgen3 your problem sounds like either a connection in the back of the cluster (which I suspect may be my problem) or the speedo cable itself (too much slack? idk...)

I'll report when I rip it all apart, possibly this weekend but if not over Thanksgiving weekend.

Steve

WickedGen3 · 11-18-2003, 10:58 PM

well i don't know waht it is.. but it happens only when i drive on the highway.. sometimes i dont' know how fast i'm even going if the needle is stuck... if you can .. tell me how to fix it once you break open your cluster

thanks 3SFE CAMRY