Thread: Help!
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mark houghton mark houghton is offline
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Join Date: Jul 2008
Location: Central Washington State
Posts: 3,873
Man, you guys always beat me to the punch. Lots of good advice, all spot on things to look for.
My bet is your WUR, or more accurately the electrical power to it being intermittent. If that bi-metalic strip inside the WUR stops heating up due to a power interruption, then you'll go pig rich when she's fully warm. Of course, we're "assuming" your issue is a rich condition. Your rear fuel pump relay is what energizes the WUR. If that relay is crapping out on you occasionally, then you'll loose power to not only the WUR but the rear fuel pump as well. Both can cause a rich condition due to lower fuel pressure (and thus lower control pressure at the WUR).
A set of gauges is a must to diagnose, otherwise you'll just chase your tail and get pissed off and driven to drink mass quantities of whiskey (which is fully appropriate....just don't get behind the wheel).
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 10-02-2014, 05:54 PM
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