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Logan last won the day on September 7

Logan had the most liked content!

About Logan

  • Rank
    Logan Diagnostic

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  • Gender
  • Location
    Franklin, TN

Previous Fields

  • Car Model and Year
    Fake DTS, 2010 MINI S, 2010 MINI JCW
  • Engine
    Northstar 4.6L V8 (LD8/L37)

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  1. Logan

    Mailbag: A/C on causes Overheating

    I am certainly not the expert... The biggest snag is the crankshaft is different. More details here about differences... http://www.northstarperformance.com/interchange.php
  2. Couple of years ago I had two completely different family owned GM products do this in the same month. Fill it up with gas....no start / very hard start. One was a 2002 Saturn...other was a 2009 Traverse. It was the same problem on each.....a no code evap purge solenoid failure. Pretty sure both were under the hood and fairly easy to change.
  3. A couple of fascinating pictures / diagrams of the famous chain can be seen here... http://www.toronado.org/forum/viewtopic.php?t=1511
  4. Logan

    TPS and ICM Question

    It's obvious you had a infestation. They like to chew on wires. There have actually been some lawsuits due to automakers using soy based plastics for the harness. https://www.consumerreports.org/car-maintenance/how-to-protect-your-car-from-rodents/ Fisher posted the schematic.......splice S124......circuit 639......pink wires.
  5. Logan

    TPS and ICM Question

    I think you need to poke around some more. It won't be out in the open.....it will be wrapped up pretty good with tape....sometimes you can feel a lump in the wires. Most will be sonic welded as shown.
  6. Logan

    Mailbag: A/C on causes Overheating

    I have not been following this post. Just a suggestion.. The coolant sensor may be bad. That hot....it should be obvious the engine is that hot.....sizzles...bad smells....deep boiling sounds etc. I had a non GM product recently.....it was getting the 'stop engine hot warning' message etc. Coolant sensor was showing 285F+ or something like that on the scanner. Yet.... out under the hood...all seemed well. No massive heat wave blast...no boiling....no sizzle....no smells. The coolant sensor had shifted high. A new coolant sensor and all is well. Another idea.....maybe someone put in one of those high performance 'chip' resistors being sold on eBay a few years back. Or....radiator may be clogged with sealer...."if a little bit is good..more must be better".. Or...maybe a cooling fan wired backward...
  7. I would be surprised if any replacement starter would come with the bracket.......just like alternators don't come with brackets either.... A little bracket like that is a prime candidate for being tossed out....forgotten....or classified as "not needed". No bracket....good chance you would crack a starter every couple of months..
  8. All the same brand starter? Is the little (#3) bracket there? Picture is for a 4.9L. https://www.knowyourparts.com/technical-resources/starting-and-charging/what-causes-broken-starter-nose-cones/
  9. Could be a flywheel issue such as cracking or ring gear damage. He really needs to check the gap between the ring gear and the bendix. He may actually have to install a shim between the starter and the block. If too tight...it can actually break the starter housing. The starter housings are kind of designed to be sacrificial to some extent....it's a lot better to break a starter vs break the engine block if too tight.
  10. There is one sort of.....but not like the old replaceable ones. It's like a mat and is part of the fuel pump sending unit. Barring any problems (..diesel, dirt in tank etc..) it is suppose to last the life of the vehicle. They also no longer have a fuel return line. GM service manual fuel system description for 2008 Impala. The fuel system is a returnless on-demand design. The fuel pressure regulator is a part of the fuel sender assembly, eliminating the need for a return pipe from the engine. A returnless fuel system reduces the internal temperature of the fuel tank by not returning hot fuel from the engine to the fuel tank. Reducing the internal temperature of the fuel tank results in lower evaporative emissions. The fuel tank stores the fuel supply. An electric turbine style fuel pump attaches to the fuel sender assembly inside the fuel tank. The fuel pump supplies high pressure fuel through the fuel filter contained in the fuel sender assembly and the fuel feed pipe to the Fuel Injection System. The fuel pump provides fuel at a higher rate of flow than is needed by the fuel injection system. The fuel pump also supplies fuel to a venturi pump located on the bottom of the fuel sender assembly. The function of the venturi pump is to fill the fuel sender assembly reservoir. The fuel pressure regulator, a part of the fuel sender assembly, maintains the correct fuel pressure to the fuel injection system. The fuel pump and sender assembly contains a reverse flow check valve. The check valve and the fuel pressure regulator maintain fuel pressure in the fuel feed pipe and the fuel rail in order to prevent long cracking times.
  11. This pretty much covers it... http://www.northstarperformance.com/interchange.php Dogbones were not used after 2000 except for Eldos....but the holes are there for the brackets. Buried in the details.....a different crankshaft in 2000....."A new crankshaft with a different reluctor wheel (crank position wheel) is used"
  12. You can get access to the same GM info the dealers use cheap. ACDelco site offers unlimited use for 3 days for $20. https://www.acdelco.com/for-professionals/gm-service-information.html Fuse #29 has a lot connected to it...Also known as 'IGN 1' fuse.
  13. Seems I've heard this story.... https://www.cadillacforums.com/forums/cadillac-seville-cadillac-eldorado-forum/247794-northstar-performance-stud-kit-problems.html
  14. Certainly sounds like there is a leak. Before throwing more Freon at.....look at the front of the condenser. One little stone chip and it will all leak out. Look for a oily damp area.