Join Date: Jul 2007
Location: Kansas City MO
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01 7.3 lots of codes after changing Glow Plugs
Skip to problems unless you want to be bored or need background.
I have been accused of being a bit anal when it comes to taking care of my cars. Oil change every 3K miles fuel filter every 10K and Howes in every tank.
My scanner showed over boost at start up which made no sense and it is just a hypertech tuner scanner. So, I go to an independent shop and get the SES light checked. They say #6 glow plug bad. I did notice a puff a smoke when it cool out so it made sense. I have known the guy for several years and trust him so I am sure he was being fair with me. That being said they wanted a lot of money to fix it so a buddy and I did it yesterday. Both of us do a lot of auto work and do most of if not all of our work.
As stated above I prefer overkill, so se did them all, they were only 12 bucks each, so why not, and we did the harnesses at the same time based on many recomendations. Got the parts from Ford, Genuine Motorcraft boxes. The valve cover gaskets were in really good shape so I left them on, we had extras but no need to change them. The inside of the engine was sparkling clean (glad to see that). But, I have to say it was a bit of a pain on the excursion, the lower valve cover bolts on the passenger side and the rear on the driver side are not fun. It took us about 4 hours.
So we reset the codes and I drive the thing home. Runs fine starts fine, but the SES Light came back on last night after two drives one about 20 miles and the other about 2. When I got the truck it had a hypertech program in it. I took it out and use it to correct tire size (+1). It does have the DTC reader in it so I kept it, cleared these codes this morning.
I now have 10 codes this morning.
I sure hope it is something simple, I reset them and will check again later today. Is there something stupid we could have done that would cause all of these codes. It only had one before, I sure hope I did not do a bunch of work for nothing. I know the plugs go bad and the truck is 10 years old and has 95k on it so I do not think it was a waste of time. But what went wrong? Looking for help.
PS we did check here before we started and got a lot of help from others. So thanks for that and for this problem in advance. Sorry to be so long. Richard.