Factory Tach Stopped Working - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Stroked87K10 · 07-27-2011, 03:50 PM

I have an 87 K10 with what looks to me to be a factory tach. The other days randomly while driving the tach stopped working and is stuck at 4500 rpms. The truck is kind of a Frankenstein as the cab anyway was orignaly a 6 cyl and now is surely not. Axles are Danna 44 8 lug front and FF 14 bolt rear, seems like Blazer buckets and center console. I didnt do any of the work to the truck so i'm at a loss as to finding out whats what. All i know is the tach it has in it worked one day and doesnt today. Any particular things to check? Thanks!

85gmcguy · 07-27-2011, 08:36 PM

Check the easy stuff first, make sure it did't come unplugged from the distributor and make sure it hasn't lost ground. I added mine, so maybe somebody else can tell you if it's on a fuse. Where did it usually stop when you turned off the key?

07-27-2011, 03:50 PM	#1
Stroked87K10 Registered User Join Date: Jul 2010 Location: Cumberland, RI Posts: 21	Factory Tach Stopped Working I have an 87 K10 with what looks to me to be a factory tach. The other days randomly while driving the tach stopped working and is stuck at 4500 rpms. The truck is kind of a Frankenstein as the cab anyway was orignaly a 6 cyl and now is surely not. Axles are Danna 44 8 lug front and FF 14 bolt rear, seems like Blazer buckets and center console. I didnt do any of the work to the truck so i'm at a loss as to finding out whats what. All i know is the tach it has in it worked one day and doesnt today. Any particular things to check? Thanks! __________________ 1987 K10 Shortbed 4x4 Amateur Painted Arctic White 383 Stroker w/ Turbo 350, shift kit+B&M floor shifter Long Tube Headers with Flomaster dual exhaust 90 Burban Nose w/ Steel Cowl Hood Blazer Buckets w/ Center Console 4"-6" lift and 35" BFG AT's Stainless Bed Rail Bars 14 bolt FF rear Axle Dana 44 Front Axle Lund Roof Visor

07-27-2011, 08:36 PM	#2
85gmcguy Plays with trucks Join Date: Sep 2003 Location: Asheville, NC Posts: 433	Re: Factory Tach Stopped Working Check the easy stuff first, make sure it did't come unplugged from the distributor and make sure it hasn't lost ground. I added mine, so maybe somebody else can tell you if it's on a fuse. Where did it usually stop when you turned off the key? __________________ Gary My Dad's Old Truck 1985

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