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I can probably help. There are a couple of different amp to head connectors. Yours I am guessing is probably the 14 pin version. Looking at the head unit (male) connector 7 8 9 10 11 12 13 14 1 2 3 - - 4 5 6 Pin Func Color ================== P1 XAmpB+ O P2 ILL+ G P3 B+ R P4...

Did you check the screen like IJ suggested? It sounds like low internal pressure to me, and a clogged screen is a very big possibility. Pull the pan and clean/replace the screen. The electronics cannot make it slip as far as I know.

One step at a time! Ran into a couple of problems with powering the board up and down properly, and also there is a control register for port B that we did not implement properly. Working to figure out how that works and get it into the board design.

So you dyno'd the pump and it didn't meet spec?

If you want to measure the health of your A/C, you need to compute the sub-cooling temperature (superheat for fixed orifice A/C, but the mk3 uses a TXV so superheat is always correct). To do that you will need a manifold gauge set and a precision thermocouple. You will also need a sub-cooling...

Okay, so it's out. What have you learned about your pump?

R12 is pretty benign, not that I'd recommend it in your scuba tank though. http://www.refrigerants.com/msds/r12.pdf Under SNAP, provided you put the approved connectors on there are some alternatives to R12, but as JJ says, no shop will touch your system after that because they don't want to...

Since it's all apart, I would suggest you do a compression test on #1 to rule out that ugly possibility.

Yeah sorry, my bad.. Your post is confusing.

The holes are already out of round because the wear is not even due to the nature of the cam loading. Next time you have a head apart use a bore gauge to measure the cam bearings. You will be shocked how bad they are. The journals, on the other hand, don't wear at all in my experience. Also...

You would line hone the cam bearings, or shells, in the head. The journal is the part on the cam. If you do line hone the bearings in the head, how do you plan to bring the bearing size back to the factory spec to match the cam journals?

No problem jj. My post was intentionally obfuscated, I was hoping he would read up on troubleshooting rather than play parts roulette which he seems to prefer.

I wouldn't advise getting near it with R22 in it! If the condensing temp exceeds 50C it will make for a nice bomb! For the OP, does the car have the front pusher fan?

If the cylinder misfires, the 20% oxygen in the charge does not get converted and flows right into the exhaust stream. The O2 sensor senses the high level of O2 in the exhaust and interprets that as a lean mixture. What you want is an exhaust gas analyzer. That will tell you what is going on...

Isn't that what I said, JJ? :confused:

If its just normal wear that's made them out of spec, the procedure outlined in post #7 works fine. Most of the wear is in the cap due to the spring pressure, so lapping the caps will make them more round than they are now. If the problem is abnormal wear with deep scratches or worse, then it...

Did you also do the J-tube mod?

You need to drop the tank to get the pump out, which is a bit of a problem for you since you filled the tank if I read your story correctly. Before you do that though, you need to confirm that the pump is bad. The diagnostic connector has a pin called FP. Do some research and figure out how to...

Can't beat a Panasonic toughbook if you can afford it.

I wonder if this all-trac rear bearing joint that also works on the MR2 would fit the Supra. Anyone know? http://www.twosrus.com/catalog/product_info.php?cPath=22_32&products_id=547