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Discussion Starter · #1 ·
I drove my 2008 F350 drw 6.4 to work this morning and had a check engine light come. Truck seems to be running fine. It is a low mileage truck - 58,000 miles. Last time I went to the dealer for a cracked turbo inlet pipe it cost me $2,300 for a "cab off" repair...ouch!!! Can someone give me good advise on how to find someone reputable to help me diagnose this without spending an arm and a leg at a Dealer?
 

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Discussion Starter · #2 ·
Update - I just drove my truck to the local Ford Dealer. They hooked up to the OBD port with a red hand held device about the size of a calculator and said that, even though my check engine light is one, there is no active code showing. Said if it ran ok then I could keep driving or maybe schedule an appointment for further diagnostics. Any thoughts on what this might be?
 

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that was about the equiv of taking it to autozone or advanced auto... they can read active codes... they most often can't read stored codes or pending coded. I hope they didn't charge you... .

you'll need an IDS or Snap-on tool to read pending or stored, or pull history.

so... it sounds like you tripped a code, and now the code is inactive... the light will remain for X number of key cycles.... you can turn your key on and off until it goes away (you don't have to start it)... but... if it tripped a code, i'd want to know why even if I had to pay for that information. these rigs are intricate in a way that one tiny issue can quickly cascade into a major issue if left unaddressed...

if I were to wildly guess what code or family of codes it would be to just disappear like that and the truck still appear to run fine, I'd say a momentary blink on the fuel systems- and then a return within parameter. something like a P0087/0088, or a P0192/3/4...
 

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Discussion Starter · #4 ·
They did not charge me but did offer to do an in depth diagnosis by hooking it up to the "better" machine for $150. And maybe if there is a risk of this turning into something serious, maybe I should bite the bullet to prevent major cost down the road.

Thanks for the advise and info.
 

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Discussion Starter · #5 ·
So two days ago my check engine light went off on its own. I was hoping this was a good sign. Now this morning on the way to work it came on again - truck seems to run fine. I suppose a trip to the shop to see what the code is would be safest.
 

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Discussion Starter · #6 ·
Update - My whole problem turned out to be a one of the thermostats was stuck open. Just had both replaced and now am hoping for the best.
 
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