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Is the VT engine the bane of your existence at UPS?
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<blockquote data-quote="1BROWNWRENCH" data-source="post: 1080255" data-attributes="member: 30128"><p>The 4L80E in stock form as supplied by MDC is not up to it. As soon as you see the "Component Slipping" fault it has one foot in the grave. I hear beefed up ones from outside suppliers are much better. I only have one of the beefed up one in service so far. Replacing the radiator at the same time is a must. There is a 6 speed(6L90E) in newer Workhorse P5,P57 and P7s. Workhorse P8s and 10s are an entirely different chassis and much sturdier. They have the Allison.</p><p> As far as a misfire goes, it could be a million things. If we are talking about a P5,57 or 7 it could have been an engine harness problem.Those units were put together badly and are notorious for chafing in dozens of places. Watch out for broken harness pins at the Throttle Control Module and broken crispy wires at the CKP behind the starter.</p></blockquote><p></p>
[QUOTE="1BROWNWRENCH, post: 1080255, member: 30128"] The 4L80E in stock form as supplied by MDC is not up to it. As soon as you see the "Component Slipping" fault it has one foot in the grave. I hear beefed up ones from outside suppliers are much better. I only have one of the beefed up one in service so far. Replacing the radiator at the same time is a must. There is a 6 speed(6L90E) in newer Workhorse P5,P57 and P7s. Workhorse P8s and 10s are an entirely different chassis and much sturdier. They have the Allison. As far as a misfire goes, it could be a million things. If we are talking about a P5,57 or 7 it could have been an engine harness problem.Those units were put together badly and are notorious for chafing in dozens of places. Watch out for broken harness pins at the Throttle Control Module and broken crispy wires at the CKP behind the starter. [/QUOTE]
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Is the VT engine the bane of your existence at UPS?
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