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1986911 1986911 is offline
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Join Date: Jan 2008
Location: TAMPA
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Quote:
Originally Posted by mark houghton View Post
Sounds like you've covered almost everything. A few possibilities: First, I presume there are no other outward signs of running lean - other than the gauge reading 19.5. Could be the WUR is acting up (put the test gauge on, run the car until the problem shows up again and check the warm control pressure), could be your AFR setup is acting up and giving false readings (try calibrating it?), could be a voltage regulator issue (I say that because my voltage regulator is becoming problematic when the engine is hot, causing high voltage overcharging while at the same time causing my Innovate AFR to suddenly read low - the reverse of what you're seeing), could be your Lambda system is acting up (frequency valve not operating would cause a very lean condition).
Thanks for the reply Mark, as soon as the car starts acting up I lose all power. I could barely keep the car at 20mph in second trying to get off the freeway. Car idles very rough and at low rpms maybe 500? Same exact symptoms as when my
rear fuel pump failed. I was blowing fuses and the pump seemed basically locked up. I would pull the front pump relay out and car would die right away. 2 new FP relays, new fuses and new rear pump. Less than 500 miles happy miles on new parts.

Good idea on checking the voltage, I am going to try that tomorrow and swap in a known good black round relay in the back. I also plan to pull the green plug and shut the motor off to see if the bee hive is alive! Hopefully one of those will give me a clue.
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MG---1986 911 TARGA, SSI'S, STEVE WONG CHIP, M&K EXHAUST, ELEPHANT RACING GOODIES + TRU DESIGN CUSTOM FUCHS
1989 930 FACTORY SLANT NOSE -- RARLYL8 EXHAUST, K27 7200, TIAL 46MM, 0.9 BAR SPRING, GARRETSON INTERCOOLER , LEASK WUR, WEGO IV AFM AND NHS BOOST GAUGE.
2012 DODGE RAM 3500 LONGHORN 4X4 "EVERYTHING BUT THE KITCHEN SINK"
Old 01-07-2013, 03:39 PM
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