Ultra-Gauge threw a pending tc P0430 today and temps were unusually high (first time noticing in 2 weeks since I've had the gauge). I've been perusing the Internet's finest and I suppose this could be a compound problem. First things I will try out with the high temp is go ahead and replace the t-stat to 180f, and the top rad hose (it's practically collapsed when cooling down).

The video of that guy suggesting to run lacquer thinner through your fuel system for 150 miles to clean the cats, I hope that was a joke right?!

Otherwise, I do know I have a hole in the muffler and the resonator is held together with a coat hanger. Shortly after I bought the truck, it threw code for o2 sensor (I don't remember which one, and I recently cleared that a couple days ago).

At one time today the temp started jumping back and forth between 215 and 219, then gradually went back down to between 206 and 212. Normally she's been running between 188-194 degs.

Anything else I should check out?

145,XXX and no idea what PO did or didn't do...

 

Forget the lacquer thinner. But citric acid soak works for some - http://www.subaruforester.org/vbulle...h-p0420-91379/

Drove daughter's 97 today and it was quite happy with AC on and 183-185 with a 180F stat. You may also want to eval your radiator top to bottom in the same vertical line on the fins with an IR thermometer. My indy rad guy said more than 10F spread is starting to have problems. Mine is like 3 - 5F spread, he rodded it out over a year ago. Lower rows block off with sludge first.

 

Hmmm... that reminds me, I could try xylo-mate instead of cooking up a citric acid bath. I use xylo-mate on stainless steels to clean the most caked on deposits!

How easy/difficult is it to remove the cats temporarily?

I will pick up an IR Thermometer soon to check on temps on radiator...

 

If your county does not require emission check then just leave them off.

 

Unfortunately I do live in a county where emissions are required.

About 10 years ago however, I had a car that I removed the cat and just busted out all the innards, reinstalled, and then only a few days before going to get emissions done, I had found some stuff at autozone that I added to fuel tank (and as long as cel wasn't lit), then emissions was fooled)..

I might do the same again... will codes pop up like ads in a web browser??

 

What's the easiest way to check if head gaskets are blown and seeping coolant into exhaust? Just want to eliminate that as a problem ..

 

If an older Rover does not have codes, getting within wifi range of a dealership will put some there....

 

Exhaust gas in coolant chemical test, around $60, does 15 tests. Makes test fluid change color. I think some parts stores loan them out.

 

What? Are you for real? Wifi? Hahaha please tell me you're kidding, I'm too naive right now! Lol

 

Thanks Buzz.. I will test this asap.