Electricity

This week in class we performed some electrical test on the FLD. First we tested the alternator output. The rated output was 140 amps at 2k pens. We couldn't get past 83. Didn't know if we didn't have everything on or what but it never reached the rated output. Next we tested how much volts it put out. Around 14.8volts. That's about all we did and ate pizza of course.

Srt4 and a FLD

This week in class our group did some test on the FLD. We tested the battery strength with a carbon pile tester and did some volt readings. In our other class we worked on my personal Srt4 neon. For some odd reason the fans were not working. We performed a bidirectional test with no luck. We then removed the fans and supplied power to them via the battery and they worked. Turned out to be a bad connection in the plug on the fans. We cleaned up the wires and boom! Fans now.

Electrical training

This week in class we went over the basics of electrical circuity and put our radiators back in.

Radiator and Toyota

This week in class we had 2 guess speakers from Toyota come in and talk to the class. They described what it takes to be a master tech in the Multiverse of Toyota.We also began taking the radiator out of the Hino truck. Very interesting finds with the A/C system. It was way overfilled from the factory. And also antifreeze likes to go everywhere.

Finishing the Aveo and FLD

This week in class we found the J1939 connector on the FLD. We also took the coolant temp sensor out and tested it. We took a lighter to it and watched as the resistance went down as the temp went up on the sensor. After that we put it back in the series 60. Don't forget the pipe dope and to plug the connector back in. In the other class we removed the thermostat out of the Aveo. First time i have seen that type of thermostat. It was weird!! then we tested it with a pan of water and a cutting torch. We recorded the data at the opening temp and closing temp. After that we put it back together and filled it with coolant.

ECMs and Thermostats

Why in the world is the drain plug for the radiator on a 2010 Chevy Aveo LT located at the very bottom on the side. Not just in a annoying place but behind some A/C lines and sits right behind the core support. So after fitting your hand into space about three inches wide you then have to put a 13mm wrench on it to break it loose. Well after that struggle the radiator can be trained and the thermostat can be removed from its housing. Make sure to spray down the bolts on the housing. Hate when manufacturers connect aluminum parts to cast iron parts with aluminum bolts. Welcome to snap city! ECMs oh the good and hard to find ECMs. You figure they would be mounted inside the cab or another location where they wouldn't be exposed to the elements. But nope not on a 1191 Freightliner FLD. Right inside the frame is where you can find it, covered with dirt and grease. Along side labeling the sensors and outputs, finding the J1939 wires can be a challenge in the dirt and grease. But my team and I did.

The basics of HVAC and electronic engine controls by Jacob Williams

This week in class we started on the basics of HVAC learning and electronic engine controls. During the engine control class we had to fine the ecu and label some important sensors. Unfortunately the ecu was not in the location we thought it was and we were not able to get on the computer to locate it before class ended. In the HVAC class my team and I worked on a 2010 Chevy Aveo Lt. We performed a leak test on the cooling system but did not realize we had to use the leak test dye so we still have to perform that. We also tested the pH level of the coolant and made sure the radiator cap relieved pressure at the right psi. The radiator cap was weird on this cat because it wasn't actually on the radiator but on the reservoir tank. Next week we get to finish our test and continue on our mission of greatness.