CM870 Turbo Underspeed and Overspeed
10-05-2023, (Subject: CM870 Turbo Underspeed and Overspeed ) 
Post: #5
RE: CM870 Turbo Underspeed and Overspeed
Serial number is 79079781. 2004/11 manufacture date in a 2005 vehicle.

Engine has 120k miles on it. Overhead done by Mr Haggs in 2017 at 80k miles.

Exhaust manifold recently resurfaced as a bolt had broken. EGR cleaned out at the same time.

The turbo underspeed code in stop/ go traffic is new after the exhaust manifold repair. The turbo overspeed derate was present before and after.

Paul
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RE: CM870 Turbo Underspeed and Overspeed - pwhittle - 10-05-2023



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