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Blau 5speed Blau 5speed is offline
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Join Date: Jul 2008
Location: Austin, Texas
Posts: 12
'88 will not idle and will not rev

Attempting to get my '88 S4 back on the road after 2 plus years in garage with no start problem.

Work so far:
Drain and clean tank and lines
New fuel pump, filter, strainer and sender
Rebuilt injectors and replaced rotted vacuum connections

Car now starts but will not idle. Giving it some throttle it likes 1,400 RPMs, smooth no misses, but go higher and it starts running rough and missing. Take foot off the gas and it dies.

What are next troubleshooting steps I should take? Have fresh plugs to go in and will check fuel pressure regulators and vacuum check with Mitivac.

TIA
Old 10-15-2023, 07:15 PM
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