IHADAV8.com - Turbo Buick Tech, and Nonsense
Tech Area => General Buick Tech => Topic started by: billy on August 29 2022, 06:04:55 PM
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hello guys , i recently purchased an 87 t-type that had been sitting many years from a friend . i changed the plugs , wires , fuel pump assembly and put new fuel and i cleaned the fuel injectors , to my surprise it started right up for about 20 minutes at idle good oil pressure , fuel pressure everything was looking good then it just died and wouldn't crank back up . i waited 10 minutes and it started for about 10 seconds and died , so i gave up went to eat came home and gave it 1 more try , it started for about 20 seconds this time and died and hasn't started since . what i have found is i have spark , and plenty fuel pressure but no injector pulse . i followed the trouble shooting for no start and i keep seeing i should have 6-9 vols when checking voltage at the crank and cam sensors well i'm only getting 3.9 volts , also i did the check where you jump cam shaft sensor and put volage to pin c momentarily at ignition modue and the light at injector flashed everytime , heres where i get lost it says unplug cam sensor and jump b and c pins then momentarily jump b and c at crank and injector light should light up well it doesnt ! i ordered a new ecm but now im second guessing that it could be crank sensor , cam sensor or ignition module , im not worried about ordering the ecm i figure it will be good to have an extra laying around . PLEASE HELP and THANKS IN ADVANCE !
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https://www.vortexbuicks-etc.com/troubshootgeneral.htm
Cam sensor or ecm. Read the bottom of the page about short cuts before going to the trees
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Thanks
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Welcome to the board, Billy. Bookmark the Vortex site, it's an indispensable tool.