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check engine light comes on and ..........

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Old 07-18-2018, 07:41 PM
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Default check engine light comes on and ..........

then the trans slams hard into gear.
why is this happening? What do I replace? and where do I find the part (on the truck) to replace?
thanks for your time in answering my question....Pete
Old 07-21-2018, 11:20 AM
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Well it sounds to me like something is wrong on the clutch system. Could be a master or slave cylinder failing. Or it could be just air in the lines.
Old 07-28-2018, 12:51 PM
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this is a automatic trans
Old 07-28-2018, 07:43 PM
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Originally Posted by kd7axg
check engine light comes on and ..........
...then you pull codes, as this caption explains:


(phone app link)
Old 07-28-2018, 08:35 PM
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It sounds like a bad TPS (Throttle Position Sensor). By all means pull the codes first and see what that tells you.
Old 08-12-2018, 03:39 PM
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Having similar problem. I don’t want to hijack thread but I’m new to this forum and was reluctant to start another “check engine light” thread. Mine doesn’t really slam into gear and light only comes on after engine is hot. And, the light is intermittent but when it comes on the truck seems to be having trouble with the transmission, specifically the Odrive.

Love my lightning. She’s a V8 5.0
Old 09-04-2018, 08:11 PM
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Default still no luck

I have changed the throttle position sensor (no luck) and the air bypass valve (because of a rough idle) ....now the check engine light comes on only in the afternoon when I get off of work, it will stay on for about 10 miles and then go off. any ideas????????????



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