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what would cause stock tach to be off??

  • Thread starter Thread starter 96darkhorse
  • Start date Start date May 20, 2004
9

96darkhorse

Founding Member
Oct 2, 2001
693
0
16
wilmington, california
May 20, 2004
#1
  • May 20, 2004
  • #1
what would cause the stock tach to be off?? ive been having this prob. for a while
 

94TURBO5 O

New Member
Mar 14, 2004
2,509
0
0
VA
May 20, 2004
#2
  • May 20, 2004
  • #2
It's stock that's why. If you hook up a monster tach you will see about 500 rpm diffference, at least I did.
How much is yours off?
 

maypo59

New Member
Oct 20, 2003
194
0
0
Central Kentucky
May 20, 2004
#3
  • May 20, 2004
  • #3
^^^what he said^^^
 

1105

I AM the random post master...bow down
May 3, 2003
3,841
0
0
Daytona Bch, FL
May 20, 2004
#4
  • May 20, 2004
  • #4
^^^what they both said^^^

When I hooked up the timing let to my car and checked the RPM with it, my car was reading 900 and the light was reading 650.
 
9

96darkhorse

Founding Member
Oct 2, 2001
693
0
16
wilmington, california
May 20, 2004
#5
  • May 20, 2004
  • #5
its close to 1000rpm off...when i had my car dynoed, they told me that when my tach was getting to 6000rpm their comp was around 4800!!! maybe they exaggerated
 

95snoozer

Active Member
Dec 14, 2002
2,572
1
48
RCR
May 20, 2004
#6
  • May 20, 2004
  • #6
cause it was made by ford





if you want to know the important RPM, get a minishift light. it can be had for cheap and you can mount it wherever.... even behind the a/c vent
 
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