1989 Honda Prelude FUEL INJECTION PROBLEM

Tiny
CHASWALL
  • MEMBER
  • 1989 HONDA PRELUDE
  • 4 CYL
  • 2WD
  • MANUAL
  • 100,000 MILES
Can someone tell me what computer inputs are necessary to fire the fuel injectors?
Saturday, March 7th, 2009 AT 10:01 AM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Hi chaswall,

Thank you for the donation.

The main input for injectors to fire are the crank and cylinder position sensor signals.

The positive wires receives power from PGM-FI main relay and the ECU grounds the circuit with input from the crank and cylinder position sensor in the distributor.


https://www.2carpros.com/forum/automotive_pictures/192750_InjectorWire89Prelude_1.jpg

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Saturday, March 7th, 2009 AT 10:27 AM

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