Search results

9% CO. Nice. I can only imagine how long he's been driving it like that. This is why emissions laws exist and why MKIIIs were long ago put in the Test Only Category in Cali.

As CRE pointed out the TPS can't be your problem. Frankly, I'm not sure you even have a problem. Since you're initial post is confusing I have a few questions: 1) You're saying the engine is rich. How do you know that for sure? Just because Vf is calling for more fuel doesn't mean the...

If I may butt in for a moment: The wiring and TPS are OK. It's not possible to accurately measure low resistance without special gear. He could have that much in the meter leads alone.

It's not that you're wrong it's just apples to oranges. And while seat-of-the-pants works well in small aircraft it doesn't in bigger ones like the CRJ. It certainly doesn't work in Jdub's 747. Put simply once you pass a certain weight and size the feel is gone and everything has to be done by...

^ That's surprising since my local AZ sells some of the best tracer dyes I've ever used. Made by Quest, aka EF Products.

A little high vacuum humor Nick. Very little ;) 3p actually makes a good point. It's why experienced AC techs try to evac a system when the engine bay is hot.

^ Lol. Yeah, that 10E-3 stuff is for whimps :)

That should do it. Cheap too. I guess pumps have come down these days. Mine cost a lot more than that. Lots of people do their own work and then use a shop to evac and charge. Should take an hour or so. Your Dad had a lot of time alright, a record to be proud of.

The mantra in MVAC is "do it right, do it once". How long the system lasts is directly proportional to the effort put in. Done right it will work without problem for many, many years.

What figgie said. Venturi pumps are a weak compromise at best. Get a real rotary vane (preferably a 2 stage) that can get down to at least 27 in hg. Depending on how long the system was left open it's gonna need it. Compressor flush is a cake walk. Drain the old mineral oil out, fill with PAG...

Pressostat ;)

Sorry, but doesn't get much better than that :)

The test results you posted earlier show your O2 sensor was working.

http://tinyurl.com/4sabg3

As I said coolant temp causes the ECU to adjust all three of those things but sticking to idle speed control and without going into great detail it works like this: The ISCV is fully open upon start because it went to full open when the engine was last shut down. To avoid too high of an idle...

The coolant temp sensor is the dominant input for both after start idle speed control, timing, and warm up enrichment.

First, my compliments on buying an extinguisher. Smart move. Second, I have no idea what "HalGuard" is but, since nowhere do they state it's Halon, it must be a Halon alternative. Not surprising since by law Halon isn't supposed to be used for anything but aviation. That said If I were you I'd...

Well, we have to define rich. Bottom line is it's HC that does it while "typical" richness won't. CO (which is used to determine richness) is a result of poor combustion and isn't usually accompanied by excess HC, which is raw unburned fuel/oil. Combining HC with O2 from any source will get...

Couple more comments ;) 1) It's true: alumina substrates can handle higher temps but are otherwise more delicate 2) Rich mixtures will not melt substrates because there is little to no O2 in them. What melts cats is lean mixtures combined with high HC

^ Agreed. The CC diags will allow him to test all of the sensors including the wheel switches. He should start there.