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About Jstevens7700

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  1. Your fuel mixture could be a little lean. I would check your fuel pressure Sent from my Pixel 3 XL using Tapatalk
  2. Got in our 2007 classic Chevrolet 2500 6.6 Duramax this morning and as soon as the truck started a reduced power warning came on the screen. No trouble codes that are readable with my scanner. It got ran pretty hard yesterday and has a very slow throttle response this morning. Oil pressure was abnormally high i believe it was because it was 30° Sent from my Pixel 3 XL using Tapatalk
  3. Have you tried to erase the trouble codes? It took a few days of driving and erasing the same codes for my computer to recognize the new sensors. Sent from my Pixel 3 XL using Tapatalk
  4. Just crack the lines and apply pressure to petal to bleed combination valve? Also does the truck need to be running when bleeding? The injection pump is currently at the shop is why I ask. Sent from my Pixel 3 XL using Tapatalk
  5. How would you unjam the proportion valve? Sent from my Pixel 3 XL using Tapatalk
  6. Is there a check valve in the system? Blowing air back through the line should it blow out of the resivor Sent from my Pixel 3 XL using Tapatalk
  7. I have a 1983 Chevy C30 dually with a manual transmission and a 6.2 diesel engine. The problem I ran into is the rear drum brakes not having any fluid coming to the cylinders. I even took the cylinders off the lines and mashed the petal and nothing. This truck has sat for nearly 12 years and the wheel cylinder was blown sometime when it still ran. The petal is solid except for a little at the top. I am getting a little fountain of fluid in the small front section of the resivor when pressure is applied to the petal. Tried blowing some air back through the line but still nothing there. Sent from my Pixel 3 XL using Tapatalk
  8. Also forgot to mention it has the 6.2 diesel engine. Sent from my Pixel 3 XL using Tapatalk
  9. I have a 1983 Chevrolet c30 with a 3 speed manual transmission and I have come across a broken clutch linkage or z bar. The arm that attaches to the linkage from the petal has broken its weld. Just wondering which z bar would fit the truck or would it be just as good to weld it back on. Sent from my Pixel 3 XL using Tapatalk
  10. Maybe considering there is no fuel pressure sensor for the computer to read from the Mass Air Flow calculations and thresholds set from the factory may not be met if there is no fuel pressure. If the owner can only get to about 2000 to 2500 rpm and the computer won't let the truck shift until the rpms are lowered which uses less fuel which is exactly what my truck did with the MAF code and probably in the future as the problem gets worse some o2 sensor codes saying the fuel is too lean. Moral of the story my opinion check the fuel pressure or get it checked and go from there. The codes thrown aren't always the problem.
  11. Fuel pressure should be around 60 idling. Get someone to rapidly accelerate the truck in other words put the hammer down pressure should drop slightly then return to 55 or 60 still at high idle. Sent from my Pixel 3 XL using Tapatalk
  12. Check your fuel pressure sounds like maybe fuel pump starting to act up like my 2005 GMC Sierra 1500. Same exact symptoms. Fuel pressure tester is around 30 or 40 bucks at harbor freight definitely would look into it. Sent from my Pixel 3 XL using Tapatalk
  13. Completely guessing here but have you checked the fuel pressure? While my pump was going out i got o2 sensor codes. Also cleaning the grounds are never a bad idea. 2 on the back of the block with the right wobble socket and wrench all you have to remove is the vortec cover on the motor. 2 under the truck about even with the driver door on the frame. 2 on the same side and frame rail but about under the headlight then one running from the battery to the side of the block. Like i said not sure just wanted to throw the possibility out there Sent from my Pixel 3 XL using Tapatalk
  14. Sounds like the starting symptoms of a fuel pump going out. I ran mine for a year doing the same thing. I didn't run it until it quit but that's when my trouble started. May not be the same situation but just a possibility. Sent from my Pixel 3 XL using Tapatalk
  15. All of these codes have one thing in common: fuel. I had the exact same problem on my 2005 gmc Sierra 1500 and it took me about a year to figure out that the fuel pump wasn't getting the correct psi. Very frustrating especially after cleaning grounds, new plugs wires and coils, a gas pedal sensor and a throttle position sensor and still no change. Fuel pump is the problem in my opinion but if you want to make sure use a fuel pressure tester and test the psi on the fuel rail. It should be around 60 idling. It should drop during acceleration briefly then come back to 60. Mine was staying at 30 regardless. Best bet is get a fuel pump make sure it is the correct pump for your bed size and it should resume normal operation. Sent from my Pixel 3 XL using Tapatalk
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