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"Snag" wrote in message news:vfegut$2qjfr$1@dont-email.me...The only control on this one is a vacuum switch . It can be tested with a vacuum pump and a volt/ohm meter - if I knew which wire went where . I haven't done much tuning , I was waiting until I had the drive train in it's final configuration .
...The one drive train "problem" I have left is
torque converter lockup . It ain't locking up . I'll need to do some
testing , it's probably related to all of the original pollution
controls going missing while the truck was out of service . My poor gas
mileage probably has something to do with that . There are manual
workarounds , but I really want this to be automatic .
Snag
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On my Honda lock lack was a symptom of a thermostat that wasn't fully closing and let the engine run cooler in the morning than a temperature switch trip point. The torque converter locked around noon after climbing a hill.
Since I once built production test stations for engine controls I had read the section of my factory shop manual that explained that and immediately realized what was happening.
The separate engine and emissions control manual for my 1991 Ford Ranger is 4" thick.
https://www.ebay.com/itm/374507462127
I needed it to diagnose an intermittent problem with ignition dwell time.
jsw
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