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Old 12-30-2010, 09:08 pm   #1
ray
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have 91 vette stock 350 ci cant find fuel pump relay switch repair manual shows it next to wiper motor. but i cant find it ...need help.
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Old 12-31-2010, 01:53 am   #2
 
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Really? It's about half the size of a deck of cards, twice as thick, with a pigtail exiting it.
1985 Z51 4+3 trans rebuilt 5.7 TPI,(.10 over) w/ CompCams 12-262-4, 52MM Throttlebody, underdrive pulleys, reworked heads, Hypertech Thermomaster chip, & cat back exhaust
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Old 01-01-2011, 04:52 pm   #3
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not there could it be someplace else
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Old 01-01-2011, 05:23 pm   #4
 
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Have you looked behind the battery? It should be on the driver's side firewall. Think they moved it slightly year to year.
1985 Z51 4+3 trans rebuilt 5.7 TPI,(.10 over) w/ CompCams 12-262-4, 52MM Throttlebody, underdrive pulleys, reworked heads, Hypertech Thermomaster chip, & cat back exhaust
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Old 01-09-2011, 06:32 pm   #5
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still cant find fuel pump relay. at one time when you turn on key pump would run for a few secounds (as nomal) but engin e would barely start. if i sprayed fuel into intake it would run until fuel was spent. thout maybe fuel pump didnt keep running. so i hotlined the fuel pump from the battery to brown fue pump wire at conection behind fuel hatch. now it wont try to start at all, fuel pump wont even run for a few secounds when you turn on key. did i f--- something up
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Old 01-17-2011, 05:35 pm   #6
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what would make fuel injectors stop working..engine will run if i spray fuel into throtle body ,fuel pump working 39psi but no fue getting to the intake..........
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Old 01-17-2011, 09:12 pm   #7
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Could it be the ECM?
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Old 01-18-2011, 05:57 am   #8
 
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Quote:
Originally Posted by ray View Post
still cant find fuel pump relay. at one time when you turn on key pump would run for a few secounds (as nomal) but engin e would barely start. if i sprayed fuel into intake it would run until fuel was spent. thout maybe fuel pump didnt keep running. so i hotlined the fuel pump from the battery to brown fue pump wire at conection behind fuel hatch. now it wont try to start at all, fuel pump wont even run for a few secounds when you turn on key. did i f--- something up
Check fuses
Ken
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Old 01-18-2011, 08:43 am   #9
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Originally Posted by ray View Post
what would make fuel injectors stop working..engine will run if i spray fuel into throtle body ,fuel pump working 39psi but no fue getting to the intake..........


Make sure each fuel injector is within spec's with an ohmeter.
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Old 02-09-2011, 06:14 pm   #10
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Question no fuel
injectors spec at 16.8 to 16.9 still seems they are not doing there job.....is there any type of sencer or something or time to change ecm
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