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Re: '88 900 Turbo cuts out at stop signs - Any insights? Posted by RS [Email] ![]() ![]() ![]() In Reply to: '88 900 Turbo cuts out at stop signs - Any insights?, Ed, Thu, 29 Jan 2004 01:05:42 Members do not see ads below this line. - Help Keep This Site Online - Signup |
These are the two usual suspects -
- Turbo Bypass Valve has a hole in the diaphragm. Find the hose that runs from the intake manifold down to the valve below the distributor. Take ot off the manifold and suck on it. If it doesn't hold vacuum, it's bad and needs to be replaced. The valve recirculates compressed air from the turbo when you suddenly close the throttle, preventing the turbo from stalling.
- Bad dashpot. This is a small flying saucer-shaped thing on the side of the throttle body, right in front for the throttle bellcrank. It has a pin that is supposed to keep the throttle from closing too slowly for those last few degrees. When it doesn't work, the throttle plate slams shut and the L:H 2.2 FI programming isn't able to compensate.
posted by 63.148.1...
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