need help with diagnosis
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Joined: Aug 2010
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need help with diagnosis
While towing the we experienced a check engine light and truck went into limp mode because it thought it was overheating. We shut it down and checked in a few minutes later, temp was normal and truck ran fine. Checked the coolant and it was okay. Took it to a shop where they read the code and said it was the engine temp sensor ($$$), had it replaced and tried again. Again it did the same thing. FYI, it does not do it when we are not towing, we tried towing without the electrical to see if that made a difference. It didn't, it still had the problem. Any ideas, suggestions, I plan on taking it to the shop again but would love any input from other owners who might have had this same issue. The truck only has 52K on it, and runs good. Thanks for any input.
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Joined: Jan 2004
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From: USA
Oxy sensor
At 52k I would change the Oxygen sensors very easy to do! Then see how it runs towing.
A bad Oxygen sensor will make the engine run, rich or lean, and pulling a load create more heat.
A bad Oxygen sensor will make the engine run, rich or lean, and pulling a load create more heat.
Last edited by rudedogii; Aug 25, 2010 at 10:12 PM. Reason: spelling
FTE Leadership Emeritus
Joined: Sep 2000
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From: Stephensville WI
Hard to say without the exact code, but we'll try.
Did the engine show any unusual behavior or noises before it went into limp mode?
When it did go into limp mode were you driving at highway speed or was it slow speed with a lot of stop-n-go driving?
Did the engine show any unusual behavior or noises before it went into limp mode?
When it did go into limp mode were you driving at highway speed or was it slow speed with a lot of stop-n-go driving?
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Thanks for the reply. We have found out what it is, the engine is not cooling evenly. It needs some updated parts to fix the problem. Unfortunately there has not been a recall for it as of yet, so it is not covered.
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