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  1. YukonGTmaster

    Cranks but no start...continued *SOLVED*

    I have 415,000 Kms on my 97 Yukon. I am on my 3rd Fuel pump. I am ashamed to say that I sometimes let my fuel tank get dangerously low before refueling. The reason it was so dangerous, was because the last time I had to replace the pump, the electrical connector that was submerged in fuel with...
  2. YukonGTmaster

    5.7l Vortec Distributor Timing

    Ok thanks. There is a problem with the in App purchase for Extended Parameters in DashCommand. I talked with Support at Palmer Performance , and hopefully they are sorting it out. I unfortunately am having low oil pressure when warm at idle, so I am going to have to pull the distributor...
  3. YukonGTmaster

    Cranks but no start...continued *SOLVED*

    I just did the fuel pressure check on my 97 Yukon before changing out the Spider to MPFI unit. At key on the PSI was 65. But quickly bled down. I suspected the Fuel pressure regulator. My new Spider from Motor Man came with new regulator installed.
  4. YukonGTmaster

    5.7l Vortec Distributor Timing

    Looks like Dash Command is strictly monitoring Timing. I don’t see Cam Retard Offset. I’m using an iPhone.
  5. YukonGTmaster

    5.7l Vortec Distributor Timing

    I just installed a new Bravex Distributor in my 97 Yukon GT 5.7l Vortec after doing the MPFI upgrade. I fiddled around long enough so the distributor body sat somewhat parallel to the intake, and there was no more P1345 code. I got an OBDLink MX Bluetooth scanner with Dash Command App installed...
  6. YukonGTmaster

    5.7L Vortec Problems

    I pull the distributor back out. Set the engine to TDC. I looked at the old match marks I made on my old distributor. I took a long screwdriver and turned the oil pump drive to where the needed it to line up. The distributor dropped in and no codes. I ordered an OBDLink MX Bluetooth scanner to...
  7. YukonGTmaster

    5.7L Vortec Problems

    Thanks! I will turn the distributor counterclockwise like you said. I’m going to order a OBD2 Bluetooth scanner off Amazon. Should be here tomorrow. I cleared the code and the truck is running smooth, but every time I restart the engine it relatches the P1345.
  8. YukonGTmaster

    5.7L Vortec Problems

    I got it all back together. It fired up, and latched a P1345 code. I had a bad feeling about replacing the distributor while doing this job. I have to see if my buddies obd scanner will do the trick while running.
  9. YukonGTmaster

    5.7L Vortec Problems

    Haha! Thanks for the heads up! I am going to hopefully get it all reassembled tomorrow.
  10. YukonGTmaster

    Most likely a common oem rim / tire question

    I have the BF Goodrich KO2. 265/75/R-16. I like them. I hade 2 previous sets of the KO, which were awesome. Good on and off-road, good in the wet and snow, and long lasting. I think you are only able to buy the new KO2 now, which have a more aggressive looking sidewalk. When my truck was new, I...
  11. YukonGTmaster

    Need help with no power

    Looks like there is a 40 amp “Maxi” fuse? Not sure where this is located?
  12. YukonGTmaster

    Need help with no power

    Did you check the two grounds where your negative battery cable bolts to the frame. It might be worth removing them. Make sure the connection is bare metal, clean and tight.
  13. YukonGTmaster

    5.7L Vortec Problems

    Thanks drakon543. I got the intake bolted down. I soaked the threaded inserts at the cylinder heads with ACF-50 for about a week. I blew them out and dried them with compressed air. I noted some coolant sitting onto of the valve in #1 cylinder so I got a 1/2” flexible tube and taped it to the...
  14. YukonGTmaster

    5.7L Vortec Problems

    I am going to clean all gasket surfaces with MEK, and install the intake tomorrow. Will. 1997 Yukon GT. 1 owner, daily driver. 415,000 kms.
  15. YukonGTmaster

    5.7L Vortec Problems

    I replaced the Heater Hose coupler with a Dorman (wish it was AC Delco), Thermostat, and EGR valve gasket.
  16. YukonGTmaster

    5.7L Vortec Problems

    I got the new MPFI Spider installed, but had a heck of a time getting the upper intake manifold to seat down over the spider O-Ring. I pulled the manifold off and put Petroleum jelly on the O-ring and a lot on the inner bore of the upper intake. When I got it installed I noted a 1/8” gap between...
  17. YukonGTmaster

    5.7L Vortec Problems

    The oil pressure gauge had been dancing around on me for a while, so as it was staring me in the face at this point, I ordered the Oil Pressure Switch /Transmitter, and the EGR tube off Rock Auto, and it was delivered in 3 Days.
  18. YukonGTmaster

    5.7L Vortec Problems

    I cleaned the Intake in a CUDA parts washer, media blasted the pitting, and built up the surface with Metal Set A4. I let cure 2 applications over 48 hours. I then wet sanded the surface with 1000 grit paper, wrapped around a metal flat bar. During the disassembly process I destroyed my EGR...
  19. YukonGTmaster

    5.7L Vortec Problems

    I was having a rough idle, and the Amber engine light would flash (Random misfire) when I started up in the morning. I would cycle the key off for ten seconds, the light would go out and I would drive to work. It was not latching any codes. I had a bad coolant leak as well. Then I started to...
  20. YukonGTmaster

    Which "Spider" injectors

    I am in the process of installing the MPFI Spider upgrade this week. I have the latest Felpro intake gaskets, and new Felpro bolts. When I pulled the lower intake, I noted extreme corrosion pitting at the coolant port gasket surface. I soaked the lower intake in a hot tank parts washer, and...
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