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| Unlike the 1993 6.5L there is no metering valve to stick, therefore a stalling problem is usually related to an electrical problem of some sort. A complete check of all ground wires and connections should be made before replacing the injection pump. Loose or improperly connected ground wires have been known to cause start and die situations, stalling on turns, as well as intermittent stalling. Both wiring harnesses hooking to the computer bulkhead connector from both inside and outside the cab have been known to cause stalling. Also check for proper ground connections of all ground wires making sure you are not trying to ground to a painted surface. Once the vehicle has been completely checked for poor electrical contacts the injection pump may be the next place to suspect a problem. Changing the injection pump should eliminate any problems created by a bad connection within the electronics of the pump. NOTE: Some technicians are mounting the Pump Mounted Driver on a heat sink on the firewall well away from the injection pump. This supposedly keeps the extreme temperatures from affecting the PMD and prevents hot stalling. According to Stanadyne the PMD actually operates cooler while mounted on the injection pump.
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