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1988 Chev 3500 Pick-up Overheating - Engine
Question: 7.4L TBI engine...new "tall radiator" from a '95...new engine, trans, exhaust system, computer...truck ran 245-250 on warm days...
GM couldn't fix...aftermarket computer chip cooled
it off some, 220-230 now; was told that factory
set-up included a delayed power enrichment mode, causing engine to run lean (exhaust manifolds glow
bright red, even in cold weather)...better now, but
still runs too hot.
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