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DBLSPRT68 · 02-12-2012, 07:37 PM

Hey everyone, I got my 89 454 TBI Suburban put back together after sitting about a year and a half. I had to replace the power steering pump and the smog pump. Time got away from me and it sat a long time. When I cranked it up it started after several spins

BUT it's stuck in high idle!!!!!!!!!!!!! I can not get it to come down. I've un plugged stuff while it's running and even tapped on the TBI unit with a hammer. I don't know if the injectors are just stuck wide open, or something that sends the signal to pump for high idle is stuck. This truck ran perfect before, and now I need to sell it!!!! HELP!!!!!!!!!!!!

02-12-2012, 07:37 PM	#1
DBLSPRT68 Registered User Join Date: Nov 2000 Location: Ft. Mill, SC USA Posts: 931	454 TBI stuck in high idle?????? Hey everyone, I got my 89 454 TBI Suburban put back together after sitting about a year and a half. I had to replace the power steering pump and the smog pump. Time got away from me and it sat a long time. When I cranked it up it started after several spins BUT it's stuck in high idle!!!!!!!!!!!!! I can not get it to come down. I've un plugged stuff while it's running and even tapped on the TBI unit with a hammer. I don't know if the injectors are just stuck wide open, or something that sends the signal to pump for high idle is stuck. This truck ran perfect before, and now I need to sell it!!!! HELP!!!!!!!!!!!! __________________ PROJECT TRUCK: 1985 SWB C10 Silverado Black/Charcoal, 1990 V2500 Suburban, 2018 Suburban, 2005 GMC 2500HD CCSB, 2014 Toyota Camry SE, HAD.....1968 Camaro RS/SS Family owned since new; 350 3 speed SOLD