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Have an FL 80 Freightliner with 3126 engine that is

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Have an FL 80...

Have an FL 80 Freightliner with 3126 engine that is experiencing intermittently severe power loss. After sitting and cooling off power level return to normal levels only to relapse in an hour or two or day or two to very limited power levels????????????

Mechanic's Assistant: What's the make/model/year of your truck? Engine type?

1997 Freightliner FL80 with 3126 cat engine

Mechanic's Assistant: Anything else you want the truck mechanic to know before I connect you?

In July I changed fuel filters , I've checked tanks for evidence of water.>>nothing . I've changed air filter. The mechanic has verified no evident air to air problems?????

Submitted: 11 months ago.Category: Medium and Heavy Trucks
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Answered in 1 minute by:
9/15/2017
Technician: Cat Man, Cat Engine Expert replied 11 months ago
Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 9,459
Experience: I am ASE Master Truck Certified.
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Thanks for asking your question. I will try and help you out.
Does the yellow check engine light come on when the low power happens?
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