Amber Triangle/Warn Engine* Indicators

Next time you get an oil change, if you buy your mechanic a coffee he will install it during the service. (You still need to buy the filter too though, LOL)

 

Thanks Heavyd,
I ordered one yesterday after pulling the old one off and seeing it was plugged full.It weighed a bunch.
The truck has 171k on it and original filter.

What would cause the code for high manifold temp? Would that filter have anything to do with it? Or an EGR issue? last time i did it was 4 days before they pulled it in a door.
I also noticed it is not doing the DEF cleaning like it used too......dang EGR crap!
The light comes on if i'm hammering hard on it......75 mph or higher is usually when it pops on.Engine coolant temp is normal though.....

 

The code is usually in error. Chances are you need the intake manifold/pressure sensor cleaned. (They are the same sensor). They are prone to plugging up with carbon. Same for the EGR differential pressure sensing tubes. With these plugged it throws everything out of wack. Also, if you are loosing coolant, they will carbon up even quicker. EGR coolers failing and leaking coolant through the exhaust is very very common on these engines. If your engine is still under warranty all the cleaning is done as part of it. They know that leaking coolers plug up everything so they take apart all the EGR tubes and clean them out. They will also do forced regen for you to burn out any coolant contamination.

 

Thanks for all the help Heavyd and Injun,

My last service they plugged into it and told me it was the high manifold pressure that was setting off the engine warn light.
They cleared the code and it lasted for about 100 miles before it came back on.
The warning light goes off after the truck is shut down for a few minutes just to come back on in usually 50 miles or so.

The exhaust temp light does not come on near as often as it used to.
Makes me wonder if the exhaust filter is even working.

A few months ago the Cummins dealer did a forced regen on the filter and it straightened out for about 50k miles.

I was running through the mountains on I-40 the other day and it rolled white smoke for a good 30 minutes without the High exhaust temp light on......Strange.

 

White smoke is common with coolant being burnt.

 

Thanks,It goes in the shop later this week so i will have them pull that sensor.
If it is the one on top of the manifold i may pull it myself today and clean it.

 

The manifold pressure/temp sensor will have a 4 wire connector going to it. It is held in with only 1 bolt that takes a 10mm socket. The sensor comes out by going straight up with it. It will be kinda stuck so you will have to wiggle and twist it back and forth as you pull up. It is plastic so don't be too rough with it. Once it is out you will see what it look likes and how much carbon is on it. Just use a small pick or mini screw driver to gently clean out the carbon. The temp probe in the middle of the little plastic cage section so be careful not to damage it. The pressure sensor part is in the base and you can't get in there with anything. I just use compressed air to blow it out after the main carbon is scraped away. As I mentioned there is a plastic cage, with all the carbon scrapped out you should be able to see through it and see the temp probe. This is the best picture I found of one, and it is plugged too.

 

Good deal,Thanks Heavyd!