Question about 1991 Chevrolet S-10

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91 s10 2.8 tbi tach wire signal.."green"= tach signal

I am unable to obtain a tach rpm signal. Is there an adapter need for the tbi injection 2.8?

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6ya6ya
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Posted on Jan 02, 2017

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tennkntryboy
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SOURCE: cant find the iat sensor on 91 s10

The IAT or MAT sensor (as equipped), is a thermistor (resistor which changes value based on temperature) mounted either in the air intake snorkel or the manifold (depending on the application).

Posted on Jan 04, 2009

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csmock132
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SOURCE: 91 s10 blazer tach signal wire

Coming off the coil there are two plugs both with two wires. One plug goes to the distributor. The other plug is the one you want. Tie into the white wire. Sometimes you will find a spade connector already hooked to this wire, hook to that.

Posted on May 26, 2009

  • 1632 Answers

SOURCE: 91 S10 2.5L TBI- no fuel spray, did I test this correctly?

put a full bottle of stp injector cleaner in half a tank of fuel and run it . use techron chevron fuel cleaner,
Vitally

Posted on Sep 10, 2009

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1 Answer

Have a 1990 isuzu trooper 6 cylinder throttle body need wire color codes to replace injector connectors


t
that is a very old car.this.

no you do mean it has 2 injectors, be nice to say "I have the 2 injector engine" a TBI injected engine .
its the 2.8L v6?

here it is, log in to mitchell's diy and read>?
first is 4 banger.

26297084-u1skeagojbjhu3ucj4o4k3kf-1-0.jpg the 6cylinder with 2 injectors TBI its called.
throttle body injected. so the blue/black wires are 12v power.
and the 2 injectors fire, blue and green. ISC valve on right.

26297084-u1skeagojbjhu3ucj4o4k3kf-1-1.jpg

Oct 01, 2016 | Isuzu Cars & Trucks

1 Answer

97 cavalier 2.2L OHV, MT ; I trying to install an aftermarket tachometer. Distributorless, two coils mounted, stacked on back side of block. No pos or neg wires to this style of ignition coils. I have...


Who manufactured the tach? Maybe they have a web site and instructions? Did you tach come with instructions?

I looked at autometer instructions for your vehicle, have to use an adapter, it ties into the power wire for your coil pack. The adapter costs about 97 bucks, not including tax.

Different tach manufacturers may have different hook-ups?

Feb 15, 2015 | 1997 Chevrolet Cavalier

1 Answer

Checking tbi injecter voltage


On a 1988 model which should be the same as 87, I show two injectors in the throttle body. Inj 1 has red and blue wires and inj 2 has green and white wires.
The red and white wires should be battery voltage, and the other two are ground signal wires from the computer.

Dec 20, 2012 | Chevrolet Silverado 2500 Cars & Trucks

1 Answer

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

Install tachometer on 3.4 camaro


Most likely you will have to use the tach adapter to get a useable tach signal from the computer.

Mar 18, 2010 | 1995 Chevrolet Camaro

2 Answers

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

I amcurrently searching for a diagram to wire up my RPM gage but I don't know where to put the wires!!!! I really need help!! thx:)


The RPM guage (tachometer) reads the spark impulses from ground terminal of the high voltage sending unit. I've never had to install a tach on an Accent, but for the most part the wire (on other model Hyundai's) is green and connects to the distributor primary or negative (-) side of the ignition coil. And then to the Tach terminal. Do not connect to coil on If yours is an MSD ignition, do NOT connect to the coil!!. Some electronic ignitions have a tach terminal on the ignition box, the green wire may connect there. Hpe this helps....

Oct 10, 2009 | Hyundai Motor 1998 Accent

1 Answer

Don't know were to wire my tach to.


try to conect it into the +positive battery terminal.

Jun 05, 2009 | 1996 Ford Crown Victoria

1 Answer

Aftermarket tachometer in 91 cavalier???s


purple/white off the ignition module is your tach signal

Oct 13, 2008 | 1991 Chevrolet Cavalier

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