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1991 Chevrolet Corvette ECM

Tiny
FRANK TEIXIDO
  • MEMBER
  • 1991 CHEVROLET CORVETTE
  • 5.7L
  • V8
  • 2WD
  • MANUAL
The speedometer does not work
Saturday, December 6th, 2014 AT 11:24 AM

10 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Havpro see if you are getting a signal form VSS it may be a bad dash/speedo
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Saturday, December 6th, 2014 AT 2:27 PM
Tiny
FRANK TEIXIDO
  • MEMBER
  • 9 POSTS
It was the first thing I changed and is not the problem,
the problem is the ecm,
a friend has left me yours to try and with it no problem.
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Sunday, December 7th, 2014 AT 2:59 AM
Tiny
FRANK TEIXIDO
  • MEMBER
  • 9 POSTS
Electrical problem with ECM
how to get a list of components?
Is a component marked as RV and do not know which components are
puts GEES 5034, not if they are tantalum and that value.
How to get a list of components?
How to get the schematic?
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Sunday, December 7th, 2014 AT 3:11 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Best bet for a diagram is to rent a manual and go from there. It may be antoher module besides the ecm so don't count that out right away. Besides your ecm has what is called a prom inside and it may be that that is screwing up on you. The prom is removable and are no longer available.
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Sunday, December 7th, 2014 AT 6:21 AM
Tiny
FRANK TEIXIDO
  • MEMBER
  • 9 POSTS
The prom used always have to be the same for correct year but with another ecm then it works perfectly.
It is the ecm definitely the problem.
How to get a list of components?
How to get the schematic?
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Sunday, December 7th, 2014 AT 10:13 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Younever get a schematic of the ecm only it's ports. Like I said in first reply rent a manual then you can print it out we can't make them large enough for you to read them
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Sunday, December 7th, 2014 AT 4:05 PM
Tiny
FRANK TEIXIDO
  • MEMBER
  • 9 POSTS
Rent a manual
Where I can rent the manual?
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Monday, December 8th, 2014 AT 3:06 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Look on our site under how to repair manualsyou can print off whatever you need or rent it for a week
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Monday, December 8th, 2014 AT 7:04 AM
Tiny
FRANK TEIXIDO
  • MEMBER
  • 9 POSTS
Get a list of components ECM?
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Tuesday, December 9th, 2014 AT 2:06 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Ecm components are never listed I h ave no further comments or suggestions.
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Tuesday, December 9th, 2014 AT 7:17 AM

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