4cyl tach

L

lit_mike_2001

New Member

Jan 25, 2003

163

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Ada, OK

Nov 11, 2004

#1

• Nov 11, 2004

• #1

Has anyone used a 4cyl tach with a 302? Ive read somewhere that they either read double or half as fast i cant remember which....There has to be a cheap fix for this. Anyways im going to be hooking mine up even if it reads wrong, but where does the 4cyl tach hook up originally?

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

31,179

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129

Nov 11, 2004

#2

• Nov 11, 2004

• #2

some OEM tachs have a switch on the back which one can toggle for different configurations. not sure about Ford's gauges though.......

 

dastang2

Active Member

Dec 11, 2003

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tx

Nov 12, 2004

#3

• Nov 12, 2004

• #3

i have heard that the ford gauge has that but isn't aren't the redlines different. it reads double, i have an aftermarket one hooked up as well and it reads 2000 while the stock one has 4000

 

B

Boss 351

Here sthhhhhhhheeeve take a picthh of my man flowe

Jul 13, 2003

2,433

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Canada

Nov 12, 2004

#4

• Nov 12, 2004

• #4

The older Fords had that switch search for the year but mine is an 89 and doesn't have the switch. Best bet is to get an aftermarket tach, even if it's a cheap brand. I'm just trying to figure out a way to get rid of the factory tach before I put in an aftermarket one. I don't like having 2 tachs in the car it looks cheesy IMO.

 

Michael Yount

Mustang Master

Apr 10, 2002

9,039

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79

Charlotte, NC

Nov 12, 2004

#5

• Nov 12, 2004

• #5

"it reads double, .....it reads 2000 while the stock one has 4000."

I'd describe that as reading half, not double. Just me.

You'd be much better off simply buying the tach out of a junked 5.0L car. There's no market for them, so you ought to be able to get one cheap.

 

NosPony

New Member

Apr 2, 2004

278

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Canton, Il

Nov 12, 2004

#6

• Nov 12, 2004

• #6

My 85 gt i had did have the differant tach switch. All u did is take the cover off the gauges and u should see it. If i remember right.

 

J

JB66

New Member

Aug 21, 2004

565

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New York

Nov 12, 2004

#7

• Nov 12, 2004

• #7

Does the 4 cyl dual plug engine tach read off only 4 plugs or all 8?

 

2

2002BLGT

Well-Known Member

Dec 18, 2003

2,945

4

59

Bedford VA

Nov 12, 2004

#8

• Nov 12, 2004

• #8

86 and older should have switch , newer cars will have to change the in dash tach ......

 

L

lit_mike_2001

New Member

Jan 25, 2003

163

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Ada, OK

Nov 12, 2004

#9

• Nov 12, 2004

• #9

well this is a 91' that doesnt have the switch... can anyone tell me where the tach hooked to the 4 cyl orignially?

 

dastang2

Active Member

Dec 11, 2003

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tx

Nov 12, 2004

#10

• Nov 12, 2004

• #10

Michael Yount said:

"it reads double, .....it reads 2000 while the stock one has 4000."

I'd describe that as reading half, not double. Just me.

You'd be much better off simply buying the tach out of a junked 5.0L car. There's no market for them, so you ought to be able to get one cheap.

Click to expand...

i meant that the 2.3 tach would read double than the aftermarket tach. the stock one would be at 4000 while the aftermarket would be a 2000, it could go either way i guess.

 

J

JB66

New Member

Aug 21, 2004

565

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New York

Nov 12, 2004

#11

• Nov 12, 2004

• #11

1991 Mustang - 4 cyl runs off EEC module
8 cyl runs off coil
According to the shop manual, anyway.
Pinouts on the IP connector are the same.
Pin 11 is the active pin picking up from the coil for 8 cyl and pin 6 of the dis. module for the 4 cyl.

 

M

mguindon10

Founding Member

Mar 2, 2001

53

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0

Monroe MI

Nov 12, 2004

#12

• Nov 12, 2004

• #12

An easy fix would be to run down to the local junk yard and get a 5.0 tack. If i recall there are about 2 billion stangs in the junk yards so im sure you wont have trouble finding one. Usually the j yards will work with the price and its alot easier to have the right tack then to try to mess with it to get it to work.