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Tach signal wire

Location engine bay

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Tachometer not working on my 95 Toyota pickup 4x4 jumping up and down


bad tach, seems .
bad tach, or bad wires to it or power to it bad.
i dont know what engine option you have
but most use the ignitor signal to do this.
later about 1996 the ECU uses CKP sensor to run the tach directly
in that case bad tach, bad wires to tach or bad power feed to it.
it only has 3 wires.
power
ground
sig
one is bad, or its bad.

Dec 14, 2014 | Toyota Cars & Trucks

1 Answer

Tach


is the truck actually running at 3500 or does it just go there and stay there. If it just goes there and stays there follow the wires runnig from tach into motor bay sometimes get burnt or there may be a short somewhere

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I am sorry but fixya has no wiring diagrams.

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I have an 89camaro irocz 28 with 5.0, with a rebuilt tranny about 3 yes ago. While driving on overdrive at about 40-50 mph it will shift into od geer then back to 3rd then od again what could be causing...


Yes it can be what it is doing is called hunting, As for your RPM tach it has nothing to do with it, Now your transmission is a 4L60 and YES it does need a tach signal or the RPM signal it doesnt matter if your Tach gauge doest work but it need the tach signal for the transmission to work. And NO there is NO VSS it needs TACH. or it will hunt for a shift that is why its doing this.Youll need to restor the TACH to the transmission so it can shift properly, Now youll either have a 4pin connection,1 wire or youll have a 4 pin 2 wire connection or youll have a 4 pin 3 wire connection This transmission need tach signal so bear with me i am going to some how draw it pretend your looking at the switch. connection

l-------------------------------L
I A B I
I C D I Okay the C is TACH that has to work

Apr 23, 2011 | 1989 Chevrolet Camaro

1 Answer

Where does the rpm gauge hook up to on the engine of 1999 chevy malibu v6 engine.


The tach signal can be picked up at the powertrain control module (PCM) located behind the left side dash. The tach wire is white in plug C2 pin #10.

Nov 10, 2010 | 2000 Chevrolet Malibu

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I need to know where to wire the green wire to read RPM's for an aftermarket tachometer install on a 1999 chevy s10 with a 2.2l 4cyl.


It is usually to the positive side of the coil - also depends on what type of distributor cap you have, if there is a 3-4 wire plug that goes to the cap, one of them should be marked TACH

Oct 26, 2009 | Chevrolet S 10 Cars & Trucks

1 Answer

Pegging aftermarket tach. SunPro CP2011 installed in 1975 Chevelle. 350/350 Stock HEI. Needle at 9800 if engine running or not. Disconnect pwr wire and needle falls forward to dials. Not back to zero....


had one break like that! my buddy did the same thing! never figured out what it really was but it came down to it was just pushed past it's last leg. not sure if this is you case i would check the signal wire that goes into the engine bay! what ever you have it hook to like the coil etc... if that is fine i would say it is time for a new one or a warranty! good luck

Sep 18, 2009 | Chevrolet Malibu Classic Cars & Trucks

1 Answer

90 civic aftermarket tach wiring


the bleu wire on your distributor plug is your tach signal

most engine

Apr 01, 2009 | 1998 Honda Civic

1 Answer

Where is the tach wire in 1998 toyota rav 4?


You are not going to find the Tach wire in the engine compartment, because the tach signal comes out of ther vehicle's ECU.

The Tach wire is solid BLACK, located on pin 13 on the ECU.

Dec 30, 2008 | 1998 Toyota RAV4

1 Answer

2004 toyota corolla tach wire


you can also solder the wire to the tach wire, this way it won't come off and cause a malfunction

Jul 03, 2008 | 2004 Toyota Corolla

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