Hello everyone, I am new to the community and this is my first diesel truck. I previously owned a gas f250.

I recently bought this truck, it ran well but I have encountered a few problems. It is not plated so I dont drive it until I have the truck all done.

The truck currently has the red oil light and red coolant light showing. The oil pressure gauge is also below the bottom line. I cant figure out why... The truck runs and sounds great, in fact I did a complete oil change to see if that would fix the problem. I took it for a spin around the block and nothing changed. I also plan on having the coolant flushed soon, when I get paid.

The abs light is also on but after driving it around I am not sure why that is on either it doesn't feel like the hubs are bad while driving.

IF someone could help me with these problems it would be greatly appreciated, I am really looking forward to getting the truck on the road, its something I have wanted for a long time.

 

The oil pressure issue is just a bad sending unit, The 7.3 has a high pressure and a low pressure oil pump. The HPOP is supplied by the Low pressure pump. If the Low pressure failed then the truck would not have oil supplied to the HPOP to fire the injectors.

If the truck is running fine then the LPOP and HPOP are fine, just replace the sending unit.

 

Thank you so much for the advice I will look into it. I would also welcome any other input. I have waited so long to get one of these trucks, I cant wait to get it on the road.

 

The ABS light will need to be read by a shop with a scan tool able to pull ABS codes. Unfortunately without the code or codes there is no way to pinpoint the issue.

 

Yeah, I have a code key but unfortunately it doesn't have abs capabilities, I am going to try and find someone who can scan it cheap.

 

Here is the pressure switch

Engine Oil Pressure Sensor - Riffraff Diesel Performance

 

Do you have any clue as to why the coolant light would be on?

thanks again

 

Make sure all the grounds are good and clean. It is possible the sending unit also went bad. Does the Temp gauge move at all while on a short drive?

 

I believe the gauge moved to just above the c while on a short drive. I was worried that the coolant may just need to be replaced because it is yellow and it seems like the coolant should be green or red from what I have seen in the store.

 

It is more than likely Ford Gold coolant which is good stuff. 7.3's can run any color coolant but the green needs to be maintained with an additive to prevent air bubbles and pitting of the aluminum parts.

Personally I would run an ELC coolant like dello or Rotella. Give it a good flush, install a coolant filter use ELC and your coolant is no longer a worry for 500,000+ miles.

 

Alright thanks a lot, I think I am going to go ahead and replace the coolant sensor also, its just 8 dollars. I hope that solves all of my problems. Thanks for all the help

 

No problem, Keep us posted on how it goes!

 

I got all the parts I am hoping to get the job done this evening and I will get back with you. I hope this can help other people too.

thanks

 

Something pretty strange just happened. I went outside and turned the truck on just to see if it would start because the battery was dead yesterday. Now I turn it on, it fired right up, the red lights are off, the oil gauge is working and everything seems fine. Its pretty weird, I will see how it goes.

 

Are your batteries good, and have they been load tested? Make sure your charging system is in good shape. I had a similar issue with my 2000 Excursion and it turned out my GEM module was bad.

Has it been raining by you lately or lots of moisture in the air?