So I went into DEQ today to try to get new tags and got a "fail". Ugh. Thier computer spit out the following codes:

P0150

P0174

P1174

P1415

P0307

Now what? What should I do? I know what the codes are just dont know what to attack first. I cant afford to take it into CR or anybody else for that matter at this time so I need to try to repair it myself. Any suggestions would be greatly appreciated.

Forgot to mention Service Engine Soon light has been on for about a week.

Im thinking starting with O2 sensors. Looks like I need 4 of them? Any place cheaper than the others for getting these?

Ryan, I found the direct plug in version for the 96-97 D1 at Amazon.com for less than half of the price of one of the standard Land Rover vendors.  I was in the process of trying to find the part # for the D2, but I got sidetracked.  If you want to dig in, go to www.walkerproducts.com/ and start going through the application guide.  It is a little ambiguous, but if you can find the right part, you should be able to save around $200 on 4 sensors (assuming that the D2 has 4, like the D1).
 

Hang on Ryan... 4 bad O2 sensors sounds like a different problem than bad O2 sensors. What are the definitions for each of those codes?
 

For example, did you check fuse F2 under the hood to insure that it isn't blown?

Craig
 

I'm not an expert, but it looks like you have 1 bad O2 sensor (passenger front, on the Y pipe). Try swapping them right to left and see if the code follows the O2 sensor. If it does, then go get a replacement.

Not sure what's going on with P1415.

Lol no that bukb works fine. After I bought the truck, I put regular gas in and it ran like dog pooh(edit). I hadnt realized that they require super yet. After I put in super that light went away.

Man Craig thats a fantastic idea. I will do that tomorrow after work. Isnt P0174 System to lean?

Mike thanks for the info. I will check into those parts after I chase o2 sensers.

Heading out now to check F2 fuse.

DId a check on all fuses that I could with my tester adn found none to be blown.

I wouldn't think a misfire and O2 code would be pending, but I don't know.

If your truck reacted that badly to regular gas, you may have fouled up the O2 sensors at that time.

Sounds like I might have an error in my code description list.  That would make sense to me (again, not a professional, just a guy whose had a lot of trouble with his O2 sensor wiring).  Bad O2 sensor causes the computer to get messed up and over compensate then under compensate based on bad values coming in.  Bad air/fuel mixture causes a misfire.  I bet it's just one worn out O2 sensor.

C

Are the front and rear the same?

So now I have a tremndous coolant leak that I cannot find. UGH. Has anyone had any experience with this?

http://www.barsproducts.com/1111.htm

I know its not good to ue these products unless absolutely nessecary but Im all out of options.

Its leaking from the back side of the motor somewhere and I cant see where its coming from. The exhaust doesn't smell like coolant at all so I'm thinking its got to be a substantial leak.

A friend of mine used the stuff in his D2 with a leak similar to mine and the issue went away until he had it repaired. Just thinking out loud. I'm really out of other options at this point. Just don't know what else to do.