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I have a 1984 Chevy Corvette Crossfire and I'm.

Tiny
MATTHEWWILSON
  • MEMBER
  • 1984 CHEVROLET CORVETTE
  • 146,000 MILES
I have a 1984 Chevy Corvette Crossfire and I'm getting pulse to the passenger side tbi but not the driver side.I replaced the fuel pump, fuel filter, and all the fuses in the block. The problem started right after this. I checked alot of things and thought that it was the ecm but when I changed it out I still had the same problem. I tested the injector with a 9v battery and it fires and has plenty of fuel pressure. When I switched the connector from the driverside to the passenger side injector it would not fire so im not sure if it is the connector or something else that is causing the connector not to get power.
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Sunday, April 7th, 2013 AT 6:54 PM

13 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Is there a 12 volt signal key on engine off to the connector?

Roy
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Sunday, April 7th, 2013 AT 7:21 PM
Tiny
MATTHEWWILSON
  • MEMBER
  • 7 POSTS
No power to the connector at all.
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Sunday, April 7th, 2013 AT 7:42 PM
Tiny
ASEMASTER6371
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According to the wire diagram, there are 2 3 amp fuses in the fuse block. One for power to each injector. Re test them with a test light.

Roy
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Sunday, April 7th, 2013 AT 7:47 PM
Tiny
MATTHEWWILSON
  • MEMBER
  • 7 POSTS
That was one of the first things that I did and the fuses are good, I even went out and replaced them with 2 new fuses just to make sure. Of course I tested those to make sure they were good before inserting them.
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Sunday, April 7th, 2013 AT 7:51 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Ok, is there 12 volts at the fuse?

Roy
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Sunday, April 7th, 2013 AT 7:55 PM
Tiny
MATTHEWWILSON
  • MEMBER
  • 7 POSTS
Yes
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Sunday, April 7th, 2013 AT 7:58 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Then you have a wiring issue between the fuse block and the injector. The wire needs to be traced to look for a break or bad connection.

At the connectors, one connector has a red wire that is 12 volts and the other looks to be white wire that should have 12 volts

Roy
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Sunday, April 7th, 2013 AT 8:01 PM
Tiny
MATTHEWWILSON
  • MEMBER
  • 7 POSTS
OK I will check that and get back to you, my question is why would this problem pop up out of no where when I changed the fuel pump? And fuses.
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Sunday, April 7th, 2013 AT 8:04 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
29 year old car. Dont think you caused it by changing the pump. Wiring gets brittle after all this time.

Roy
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Sunday, April 7th, 2013 AT 8:09 PM
Tiny
MATTHEWWILSON
  • MEMBER
  • 7 POSTS
Oh OK good to know, thank you for the information sir and I will let you know what I find out.
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Sunday, April 7th, 2013 AT 8:17 PM
Tiny
ASEMASTER6371
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Good luck. Cross fire is a great system. Just need to know how to tune it correctly.

Roy
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Sunday, April 7th, 2013 AT 8:18 PM
Tiny
MATTHEWWILSON
  • MEMBER
  • 7 POSTS
Exactly I love it when its running. Thanks again.
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Sunday, April 7th, 2013 AT 8:28 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Good luck
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Sunday, April 7th, 2013 AT 8:29 PM

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