Current Classifieds

need a Ford battery for a 77 Pinto
Date: 02/21/2017 06:29 am
Need 2.3 timing cover
Date: 08/10/2018 11:41 am
2.3 front sump oil pan
Date: 02/19/2017 03:24 pm
2.3 front sump oil pan
Date: 02/19/2017 03:24 pm
Need seals Pinto Wagon
Date: 02/16/2017 05:09 pm
Mirror
Date: 04/15/2020 01:42 pm
76 pinto sedan sbc/bbc project for sale $1700 obo

Date: 10/27/2018 03:30 pm
Parting out 77 Bobcat Hatch
Date: 11/06/2017 04:16 pm
1970-1973 Gas Tank/Blue Dash
Date: 02/07/2019 11:57 pm
Esslinger 2.0 intake
Date: 03/06/2017 11:58 am
1.6 New Ford cylinder head with side draft carbs

Date: 06/12/2018 08:18 pm
1975 mercury bobcat

Date: 08/14/2018 03:40 pm

« previous next »
Pages: [1]   Go Down

Author Topic: aftermarket tach  (Read 1480 times)

0 Members and 1 Guest are viewing this topic.

Offline ERusinko

  • Pinto Driver
  • *
  • Posts: 2
  • FeedBack: +0/-0
  • Another Pinto Driver

    • Total Badges: 3
    Badges: (View All)
    Topic Starter Tenth year Anniversary Fifth year Anniversary
aftermarket tach
« on: April 30, 2023, 10:38:07 PM »
I've tried 2 different tachs and when i hook them up they both peg at 10,000 while the car is at an idle !
I'm conected to a switched power (Red), tried 2 different grounds (Black), and hooked to the negative side of the coil (Green).
Is there something different with electronic ignition ?
1978 Pinto 2.3 litre
I could appreciate any help !!
Eddie Rusinko
Yuma, AZ
Logged

Offline Wittsend

  • Pinto Master
  • *****
  • Posts: 2499
  • FeedBack: +241/-0

    • Total Badges: 8
    Badges: (View All)
    Tenth year Anniversary Mobile User Topic Starter Poll Voter 1000 Posts Linux User Windows User Fifth year Anniversary
Re: aftermarket tach
« Reply #1 on: May 01, 2023, 12:01:06 PM »
Is it possible someone reversed the factory wires at the coil? I'd remove both wires and test for voltage at each with the ignition on. I'd assume that the electronic ignition still triggers the coil by switching the ground on and off like a points distributor. Otherwise from your description it sounds like it is wired right.
Logged

Offline PintoTim2

  • Pinto Member
  • **
  • Posts: 71
  • FeedBack: +0/-0
  • Gender: Male
  • '72 Pinto & '80 Pinto Pickup

    • Total Badges: 3
    Badges: (View All)
    Fifth year Anniversary Topic Starter Mobile User
Re: aftermarket tach
« Reply #2 on: May 01, 2023, 05:07:46 PM »
Any chance the ignition module is doing multispark?   
Logged

Offline davidpinto

  • PCCA Charter Member
  • Pinto Full Member
  • *
  • Posts: 108
  • FeedBack: +19/-0
  • Gender: Male
  • pinto enthusiast

    • Total Badges: 4
    Badges: (View All)
    Photographer Topic Starter Signature Poll Voter
Re: aftermarket tach
« Reply #3 on: May 01, 2023, 06:51:07 PM »
AFTER MARKET TACHS HAVE A SWITCH FOR 4,6 OR 8 CYL.SOME ARE ON THE INSIDE OF IT,WOULD NOT READ RIGHT IF NOT SET  FOR 4 CYL.
Logged
D BARHAM

Offline Wittsend

  • Pinto Master
  • *****
  • Posts: 2499
  • FeedBack: +241/-0

    • Total Badges: 8
    Badges: (View All)
    Tenth year Anniversary Mobile User Topic Starter Poll Voter 1000 Posts Linux User Windows User Fifth year Anniversary
Re: aftermarket tach
« Reply #4 on: May 02, 2023, 11:48:36 AM »
Quote from: davidpinto on May 01, 2023, 06:51:07 PM
AFTER MARKET TACHS HAVE A SWITCH FOR 4,6 OR 8 CYL.SOME ARE ON THE INSIDE OF IT,WOULD NOT READ RIGHT IF NOT SET  FOR 4 CYL.

That is a good point that I forgot to consider. However, I believe if it was set to 8 (or 6) cylinders that it would read lower, not higher. And even if it is the other way around it would only double and a 900-ish RPM idle would be 1,800 RPM, but he is pegging at 10,000 RPM. So, while he may not have it set in the right position (and should make that correction as you note) the 10,000 RPM idle likely has another cause.
Logged
Pages: [1]   Go Up
« previous next »