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Originally Posted by Young1
Last night I found an obstruction in fuel pressure line. Blew that out and replaced hose assembly. No difference. Tccrab description is exact. It has air to make higher rpm but not fuel. I spliced the power key wires together. Full power light came on but no full power. I removed 91MY Haibeck prom and installed a 90MY SGC prom. It ran hard and fast full power to rev limiter! Once. Next time I tried check engine light came on which means it threw a code. I will check out that code tomorrow. Making progress. I least I know it WILL make full power. Also I need to diagnose the non working cruise control.
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On the cruise control front there's some good threads on the troubleshooting. Mine was a hole had worn in the vacuum line running to the cruise diaphragm on the drivers side. There's also a vacuum line that runs to a clutch pedal switch too.