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Can someone tell me where these connections are? 700 1988

No US market 1988 740s had crank position sensors.

The fuel injectors ground through the ECU.

There are several fuel injection grounds on the intake manifold. Check the 10mm head bolts, with wires under them, on the intake manifold. Make sure the bolts are tight, and the wires are firm in the crimp fittings.
--
john






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