1991 Toyota Camry No Start - No fuel

Tiny
JOSEPHGA
  • MEMBER
  • 1991 TOYOTA CAMRY
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 140,000 MILES
Car stalled while driving. No voltage at fuel pump. Tried to run paper clip diagnostics but chk eng light does not illuminate. Grounded ECU connector pin 8 on 18 pin connector and check engine light illuminates. ECU pin 7 to ground checks out 0 ohms. Checked efi 15 a fuse and swaped out relay - no change. Where do I go next? Thanks Joe
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Friday, June 4th, 2010 AT 9:44 PM

4 Replies

Tiny
RASMATAZ
  • MEMBER
Inspect and test airflow meter and EFI relay and Circuit Opening Relay.

Do this block open the airflow meter vane flap open and see what happens when you attempt to start
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Friday, June 4th, 2010 AT 9:48 PM
Tiny
JOSEPHGA
  • MEMBER
I blocked the airflow meter vane flap open and nothing changed. Car still cranks but no fuel.

Looked at efi circuit. Discovered that efi relay (pin 1)was not getting voltage to energize. Used multimeter to test continuity from pin 3 to ground and ground side checks out 0 ohms.

Manualy energized efi relay (jumped pins 2 to 4)and fuel starts flowing out of filter. Remember the chk eng light did not illuminate with key turned but it did light up after I jumped the relay.

Also swapped out circuit open relay and ecu from junk yard - no change in symptoms.

Is there something elase to check that is common with chk eng light and power to efi relay? Could air flow meter be bad?

Thanks for your help.

Joe
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Saturday, June 5th, 2010 AT 10:13 AM
Tiny
RASMATAZ
  • MEMBER
The airflow meter grounds COR in order to power up the fuel pump-You can jump the Batt to Fp on the check connector to power the fuel pump and see what happens.
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Saturday, June 5th, 2010 AT 1:56 PM
Tiny
JOSEPHGA
  • MEMBER
Was able to get her started. Turned out to be the 30A relay/fuse near the efi fuses. Could of swore I checked this.

Thanks for your help.
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Saturday, June 5th, 2010 AT 5:12 PM

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