So the only code my truck throws is 1313. Even if I don't believe it.

I guess I need to replace the cats and o2's. i'm sure this hasnt been done or in the case of the O2's in over 10 years.

yeah i know i'm all over the place right now..bearings, roof, tick...etc...but I want to plan for this as well.

I guess (2) magna universals <$160>and (2) cheap ngk o2 sensors <$120> from amazon? Plus welding at the shop.

anything else?

 

Well, you might want to read these pages from the GEMS manual, a 1313 is a code where misfires are taking place at a percentage that is high enough that could cause catalyst damage. It does not mean that catalyst has been heavily damaged. Seems like you would want to resolve the misfire first. If CATS are damaged (rattlers - or codes related to catalyst not working as they should) then might consider them. The point I am making is that a 1313 may not be resolved by replacing the CATS, it is caused by something else.

 

that's some heavy *%&# sava.

well somehow cats and cranks are connected and since i'm suspecting a crank problem and i'm having a 1313 it could be connected. well that's my take away from a way over my head manual.

rattlers or testing my cats? i don't get it. if i shove at it with a aluminum stick they don't make a noise or rattle. i can't hear anything on a bump. they seem solid.

as for the testing stuff..any info i can read of my ultragauge that can help me determine something like whether i need new cats or 02's? be nice to use it for something other than engine temp...ooo.

 

The voltages from the O2s are part of the display that can go to the OBDII port and your display. From a basic standpoint, it is important that they not be "static", they need to change.

As for heavy stuff, :


Misfire to cause catalyst damage - 15%

If you were having a lower level misfire(s) then just individual cylinder related codes would pop up. Over 15% this one pops up. My point is fix misfire before tackling change cats. The performance of the CATS is monitored by the ECU, and if they quit being effective at removing pollution from that cheap gas additive made from Coqui juice, there is a code that will pop up. So no rattles, no codes, work on other stuff first.

 

If your plugs, wires, and vacuum lines are good, I bet it's the O2 sensors. If yours has four, replace all of them, not just the front two. The CATs may be shot, but I doubt they are causing it. One of mine was completely shattered inside, but didn't make much difference after being removed.

 

Looks like slang has a non-ael. That's $100 X 4 for O2 sensors(although you only need the front 2 working).

 

Actually that's $60 per sensor, so $240 total. You could use the Ultra Gauge to see which sensors work if you don't want to replace them all. Voltages should slowly alternate between high and low. Even though they're nearly useless, I'm almost certain the rear two sensors cause misfire codes (not actual misfires) when not working.

 

Slang and I both have the non AEL GEMS. I noticed that as well on that pic he posted. That is why I hate some of those amazon listing that show a 96 but an AEL unit.

Chris-Bob can you provide more info regarding getting new Non AEL O2's for that price. I do not have an UltraGuage yet, but using the Live Data on the Actron at Advanced shows my cats to be erractic on the response time values. Sometimes they are fine, then they suddenly go way out and I get a 1316.

Slang if your O2's are that old I would change them out BEFORE anything else.
Just make sure they are not AEL as that is for the later version than what you and I own.

You have to unbolt the coil pack brackets to get to the connectors for the O2's as they sit on top of the bellhousing.

I also wish I knew what the "max correction FMFR and AMFR" means and what that may relate to.

 

I've found AEL sensors for $60 each, but non-ael are $100 on amazon. The '96 is a non-ael(iirc)

 

Here is the link to the non-ael oxygen sensor for $100.
http://www.amazon.com/NGK-25017-Oxygen-Sensor-Packaging/dp/B000C5K4UY/ref=au_pf_pfg_s?ie=UTF8&Model=Discovery|48&n=15684 181&s=automotive&Make=Land%20Rover|11&Year=1996|19 96&vehicleType=automotive&newCar=1&carId=005

NGK 25044 is the AEL oxygen sensor for $60.

http://www.amazon.com/NGK-25044-Oxyg...4338754&sr=1-1

(this info should be added to the tech section for D1's)