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**HO455** · 10-20-2018, 06:08 PM

Yes it would. Your TBI unit won't be able to compensate for air entering into the intake from anywhere but through the throttle body. A leak makes the idle mixture lean. You may have a combination of a vacuum leak and the computer wanting to relearn that is causing your issue. You should be able to find a leak by spraying carb cleaner on the hoses when it is running and listening for a change in the engine speed. There are numerous videos out there on this if you are not familiar with the process.
Good luck.

10-20-2018, 06:08 PM	#24
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 10,928	Re: No idle...need help Yes it would. Your TBI unit won't be able to compensate for air entering into the intake from anywhere but through the throttle body. A leak makes the idle mixture lean. You may have a combination of a vacuum leak and the computer wanting to relearn that is causing your issue. You should be able to find a leak by spraying carb cleaner on the hoses when it is running and listening for a change in the engine speed. There are numerous videos out there on this if you are not familiar with the process. Good luck. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377