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Replaced the reservoir cap. Removed it to check fluid levels and it broke into 5 pieces. Kinda neat to see how it works. Not neat to see the big spring launch over your head.
Order the rest of my bits to go back into the motor and replace a dead 5k mile GM LS7 lifter. Taking the opportunity to add a bigger cam and a Fast intake. Curious to see how many more ponies that brings.
Trouble shot my MAP sensor. It's dead.
New one arrives soon. It's an intermittent failure, so it was as though the problem was with the O2 sensors, but the actual problem was the MAP.
I tapped on the sensor and the car ran perfect, until it moved out of its zippy happy position. It was causing the car to run rich and from that it also threw codes for O2 sensors.
I am super excited to see what she will do come Dyno day next week or two.
Finally got the A/C recharged. I'm not sure it's "right", I'll have to wait for warmer weather to see how it does. But it was blowing cold enough air to indicate the system is working, which means I'll have the very important ability to defog over the next couple months.
My car had a bad map sensor, which killed my O2 sensors.
Replaced the map sensor, and tried to clean up the new O2 sensors. Nope they are dead.
New sensors inbound and arrive Thursday, plugs arrive sat as they are thrashed also.
Everything else is fixed in the entire system, but cleaning alone was not enough to save the O2 sensors, so in my parking spot it will sit until the parts arrive.
Moral of the story is if you throw a MAP sensor code, park the car or it gets expensive quick.
New O2 sensors arrived. This is 8-10 min of drive time on the dead o2 sensors. They were cleaned sun afternoon and reinstalled and the car parked.
If you have a bad MAP sensor, park the car and replace it ASAP!
She is back in beast mode. New plugs (TR55ix at tuners request) going in first thing in the morning.
Changing from TR6ix plugs which are now filthy.
There is also a huge difference in design from the Delco and the Bosch listed interchange o2 sensors. Buy the Delco O2 sensors.
They are better. You can see the difference between the end of the sensors. The Delco has a smaller opening, and doesn't protrude as far into the collectors. This may or may not have been a contributor to their failure. I am not well enough versed in O2 sensor designs to be an authority however, so your mileage may vary.
Car runs better now and is holding a much tighter afr than it did with the Bosch sensors that were installed 5 Dec 2019. (map sensor was still good at that time)
Also for those with kooks or considering kooks, delcos fit without extension if you unclip the harness from the rear of the block. Fits perfectly that way, safety clip and all with about an inch of slack, so nothing is overly tight.
Got the msd 88867 harness installed, seems to be functional and idle seems to have improved ever so slightly. Once my tune is adjusted for the 4" tube and ls7 MAF I'll try it connected and unconnected and Dyno day I will do a pull without it and a pull with it.
I'm not actually expecting any HP from it. Just for science since I'll be renting it for an hour. Essentially it provides a cleaner, more stable voltage source to the coil packs via 12ga wiring and the relay. That's the theory. It did ever so slightly help idle, so there may be something to it.
If I decide to keep it, I'll clean it up a little better than it is now. If not it's easy to reverse. Relay is zip tied to the strut bar. If I keep it, it will be routed to the firewall.
It's ugly right now, but I will cerakote c7600 coat it, then use black silicone elbows to improve the appearance somewhat.
I still need to hard wire the MAF wires, and trim the boot somewhat more, but it's functional now So I am able to focus on other things and come back to area beautification later.
I am using a K&N dry filter, part number is the last image. It's way easier to clean and maintain compared to the oiled variety, and cheaper by a few bucks.
01-12-2020, 07:33 AM
