Question about 1991 Dodge Ram 150

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Maintenance Required Light

I purchased a used 1990 Dodge Ram truck from my father-in-law who had always performed his own maintenance. The Maintenance Required Light stays on and he no longer has a book that told how to reset the light.

I tried a few things that worked on other vehicles, but nothing has worked on this truck. Can you help me?


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If you can find someone with a DRB scanner or an older Snap On scanner, you can turn the light out with the scanner.

Posted on Jan 27, 2009


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The computer on the truck says to have maintenance performed. Checking the owners manual, it says the EGR valve needs to be replaced. Where is the EGR valve, what does it do and where do I get the part?...

Are you sure that the Owners Manual is telling you to replace your EGR Valve or is it simply telling you to check it? Does the light on the dash say "Maintenance Required"? or is your Check Engine light on? If your vehicle is equipped with "Maintenance Required" light, the vehicle usually does not need anything. You simply check the systems that are listed by the manufacturer to check, make repairs only as necessary, and reset the light. Chrysler did some goofy stuff with Maintenance Required lights back in the 80's where they recommended replacemet of a whole bunch of parts that the vehicle didn't need to have replaced. We used to just reset the light and send the vehicle back to the customer. I haven't seen one of those for a while. If your 2007 has one of these, it means Chrysler is up to some old stuff for 2007.
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