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The only reason I would think to use the box end is that the turning fulcrum is closest to the head of the bolt, but I would also agree that a breaker bar may help. I would still be careful to not break the head off. I would hit the head of the bolt as you are turning the bolt. Another penetrating fluid to try is what Eric uses sometimes. Transmission fluid mixed in with a solvent. Transmission fluid has great creep properties.
Drove to Autozone to get the code pulled.
They got a P0102 code.MAP/BARO or MAF/VAF(Vane Air Flow) sensor condition Explanation
Vacuum hose off, cracked, or pressure blocked-Engine mechanical timing condition.
Throttle body intake tube loose, off, or cracked
BARO/ MAP defective
VAF MAF sensor dirty or defectiveThe kicker is that as soon as I started the truck to go home, the SES light went off. I did an initial check of any loose or missing hoses and vac lines and saw none. I did replace a tube that the dealer lost when they replaced the intake manifold gasket. This was a tube that connected the valve cover to the the intake manifold. During the time that this tube was missing, the truck did not show an SES. They also replaced the MAF when the SES light went on last.
I was reading somewhere that I should have waited 30 minutes after I connected the battery. This would have given the ecu time to reboot and then start the engine. Oh well, I will see tomorrow and get the codes checked and reset.
Thanks Cap,
I do not have a scan tool. I am planning on going to Autozone to have the code read. I wanted to see if anyone out there has had this issue with disconnecting the battery for a long time. This truck is a gas hog and should get 11 mpg, but I have been averaging 9 mpg. Might be an O2. I just had the mass air flow replaced that caused the last SES.Hi All,
I have a 2000 Chevy K3500 with the 7.4L V8. I replaced a door latch and to not run the battery down, I disconnected it for most of the day. Well, latch replaced and now I have service engine light on. No idea what caused it. I appreciate any ideas and answers to this.By the way, replacing those latches from Chevy that vintage are a pain. Figured out a easy way after hours of fiddling.
Thanks,
Arly