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View Full Version : 1999 s10 blazer torubleshooting HELP



mac69
08-03-07, 10:41 AM
had it scanned to see if there was anything that would pop up [nothing] he suggested possible to service trans as it prob never been done at 96,000 and have radiator flow check. The next morning i left the house got 1/2 a block & it died going down road, drug it home check all i could including replaced fuel pump relay & unhooked battery to see if possible reset. no results. somebody told me they could test brain off vech [noway]. so anyway i put computer back on & decided i need a mech couldn't look at it for a week so 4 hours after i reinstalled computer, I turn key on and for the first time since i have owned this blazer I heard fuel pump charge up & when i shut off key I heard it down charge. It ran fine. so I called mech & he said if its running noway could he find problem told me to drive it until it happened again. so yesterday was the day i was warming up in yard & all was well she fluttered & died. I decided that i was going to cut an access hole to fuel pump so when it happened I could get to & test power to fuel pump. I have no power from fp relay to fp unless i jump across, the other unit on top of fp has 3 wires it has a very weak lite. I need help please.

T Man
08-03-07, 09:50 PM
Check your ignition switch. It energizes the relay.

mac69
08-03-07, 10:04 PM
Well i tired of fighting it and was ready to tow it to mechanic & he pointed out away i had not tested power at the fuel pump. But he was doubting as it had comeback & ran sitting for 4 days. Well it was the fuel pump. Problem solved thanks for reply