liljoe07
5 Year Member
Look above it and below it.....LOL its there. Stick you hand up beside the dash where the ECM would be and feel around.
fuel pump question.
- Thread starter Betschart-91gt
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liljoe07
5 Year Member
Looks just like the fuel pump relay. Going by your other thread, you may not have one installed.
liljoe07
5 Year Member
re somewhat the same problem
I have looked over this post and my problem is somewhat close, my fuel pump is not coming on at all, i ram a jumper wire at the relay under the seat and it did come on, I found the fuselink on the blue wire under the hood was blown, I replaced the fuselink with an inline 25 amp fuse, each time I turn the switch over it blows the 25 amp fuse leading me to believe that the blue wire (which turns into a yellow wire and runs to the EEC computer at the passenger side kick panel has a short or ground, when i test the block 22 port i come up with no power. Any ideas or suggestions???????
I have looked over this post and my problem is somewhat close, my fuel pump is not coming on at all, i ram a jumper wire at the relay under the seat and it did come on, I found the fuselink on the blue wire under the hood was blown, I replaced the fuselink with an inline 25 amp fuse, each time I turn the switch over it blows the 25 amp fuse leading me to believe that the blue wire (which turns into a yellow wire and runs to the EEC computer at the passenger side kick panel has a short or ground, when i test the block 22 port i come up with no power. Any ideas or suggestions???????
Vetteguy, I don't have a diagram handy for a 91 but:
I might disconnect the Fp relay and see if you blow the fuse. If you do, the issue is elsewhere in the circuit as you noted. If not, but it blows when you reinstall the FP relay and cycle the key, the short is likely downstream of the normally-open FP-relay terminal (between the relay and the pump).
I might disconnect the Fp relay and see if you blow the fuse. If you do, the issue is elsewhere in the circuit as you noted. If not, but it blows when you reinstall the FP relay and cycle the key, the short is likely downstream of the normally-open FP-relay terminal (between the relay and the pump).
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When I pull the test port and try to check power to block 22 which i assume is to the computer it is reading nothing, also the blue 20ga wire coming off of the solenoid that turns to yellow runs to the computer ecc power relay I assume this is all tied in together? could this be the wire that is causing all my problems? I thought about just pulling a new wire to the computer or power relay at the computer and seeing if that might solve the issue. Do I seem to be on the right track or way off?
When I pull the test port and try to check power to block 22 which i assume is to the computer it is reading nothing, also the blue 20ga wire coming off of the solenoid that turns to yellow runs to the computer ecc power relay I assume this is all tied in together? could this be the wire that is causing all my problems? I thought about just pulling a new wire to the computer or power relay at the computer and seeing if that might solve the issue. Do I seem to be on the right track or way off?
oldskolbus
Founding Member
check the fuselinks with a meter. They can blow and look fine on the outside. Check for power on both sides of the link. I had one that looked fine but the wire broke on the outside of the link. Mine was the power wire to the computer so nonthing had power.
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