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  1. FBYamaha

    6.2 missing, traction control, stability lights

    Update in case this helps anyone. First, thanks to all that offered help, pretty cool bunch on this forum. So the old girl is running fine but I did want to stop it leaving stains everywhere I went to took her back in. Mechanic said it looked like oil pan and cooler block off plate (seems...
  2. FBYamaha

    6.2 missing, traction control, stability lights

    autozone...of course :mad:
  3. FBYamaha

    6.2 missing, traction control, stability lights

    OBD tells me its the crank senor...I JUST put that in bummer.
  4. FBYamaha

    6.2 missing, traction control, stability lights

    Got the rig back Tuesday evening. Happy she was running great. #1 valve spring replaced, cheap fix and an appointment to get the oil leak taken care of...... Towing the boat home today, heard a "pop" and lights came on again, tach quit working...I'm assuming I've got a short in my trailer...
  5. FBYamaha

    6.2 missing, traction control, stability lights

    Great point. I’ve still got an oil pan and rear main leak that’ll have to be fixed. So, another $1500. That’ll put me roughly at $2-2500 into an engine with 170,000 miles. I bought it from the ex for $1000. If I drop in a new engine, I’m still not under water value wise (but close) and I have a...
  6. FBYamaha

    6.2 missing, traction control, stability lights

    He did pull the valve cover and found a broken spring. We did have a similar issue a year and a half ago with #7.
  7. FBYamaha

    6.2 missing, traction control, stability lights

    The latest is...as I expected valve spring is broken. No damage to the piston so he can replace it. It's got a fair amount of miles as well as a rear seal leak so I did ask about a replacement engine. For a Jasper engine replacement it's $7100. I'm leaning towards the new engine since I'm...
  8. FBYamaha

    6.2 missing, traction control, stability lights

    Consequently....If I do need a new engine, is there a popular source others have used that is reasonable? I hate to ditch the rig since I just got it back from the ex. The condition is really good for a rust belt vehicle but at some point the value just isn't there.
  9. FBYamaha

    6.2 missing, traction control, stability lights

    Word from the mechanic "yeah, bad news, you need a new engine" No compression in No.1 which is was pretty sure was the case. I explained I've had this before and asked him to pull the cover and look at the springs. I wish I would have insisted on replacing all of them when No.7 went. He should...
  10. FBYamaha

    6.2 missing, traction control, stability lights

    All the plugs and wires are new since this began. I would think that has already been eliminated as a possibility. The next logical step I can think of would be compression check. Since I don't have one of those, next stop...repair shop and see what they can find.
  11. FBYamaha

    6.2 missing, traction control, stability lights

    I just swapped the coils to see if I’d get a code on #3 which I thought would indicate a bad coil. It didn’t change. Still getting a #1 misfire.
  12. FBYamaha

    6.2 missing, traction control, stability lights

    New crank position sensor, cleaned contacts, cleaned MAF nothing resolved. Funny thing when I connected the OBD it pulled up the misfire on Cyl No.1. I switched 1 & 3 to see if it would pull that up, just got the random code. Here I am chasing parts....just like I didn't want to :mad: but...
  13. FBYamaha

    6.2 missing, traction control, stability lights

    Fuel pressure is solid. 50 psi with key on and 60 running. I'm not sure if it helps but I'm getting The CAT/EVA/O2S/HTR red readings on the Innova. The ground to the block also looks good and solid but tomorrow I'll take off and clean all the connections I can find. Thanks for the help! As...
  14. FBYamaha

    6.2 missing, traction control, stability lights

    The plugs and wires were the first thing I did when this began, so friday. I did the bosch plugs and regular OEM wire set, nothing out of the ordinary. I've got a fuel pressure tester, so I'll do that no problem. Are these really that sensitive to voltage?! I can't imagine that would cause...
  15. FBYamaha

    6.2 missing, traction control, stability lights

    I first put a can in the tank of seafoam, then after that tank I shot the seafoam spray into the intake, right at the throttle body as directed. It doesn't knock any more or less than the usual minor knock until it gets warmed up. While I had the reader hooked up i ran it for maybe 5 minutes...
  16. FBYamaha

    6.2 missing, traction control, stability lights

    I could also add I have just bought the Innova 3140 reader so I have the ability to check live if there is something to look for.
  17. FBYamaha

    6.2 missing, traction control, stability lights

    Thanks fellas. It's the P0300. which as I understand from the searches is a pretty common and broad code. I just hate to start throwing parts at it. At the same time, I also hate to pay $500 for a easy fix. The typical dilemma.
  18. FBYamaha

    6.2 missing, traction control, stability lights

    I've done a bunch of searches and hate to ask in case I'm missing something. 2007 Denali, 6.2, 170,000 miles. Just bought it (back from the ex-wife) It was running great, ran some seafoam through it since I'm pretty sure she did nothing to it since the divorce. Changed the oil. Probably put...

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