Quick update before I sack out for the evening. T-case oil looked nasty, hadn't been changed in a while. Didn't get to the diffs tonite, will tackle them tomorrow when I flush the brakes. Fluid looks horrid, probably original..

Read the codes, my buddies 0303 and 0300 decided to rejoin the party with 1316. Probably threw them on the way to work today. Cleared the codes so we'll have to see if the plug wires sort things out.. The connector for the #3 plug did feel a bit funky so hopefully that's all it is.

 

Drove to work today and the CEL came back on, showing codes 0300 and 1316. I'm going to try and re-seat the plug wires on both the plugs and the coil packs and go from there. Any thing I should check in the meantime? Going to clean the IAC, MAF and Throttle body tonite after I change the diff oil and flush the brakes..

 

Something is causing a misfire. Since it's reliably the sme cylinder I'm leaning toward spark. If it were all over id say you could have water in your fuel or something causing misfires all over. Since it keeps coming back to the same cylinder it's gotta be local to it. Think maybe that injector? Def plug is gapped right? Are you getting spark to that wire? Pull it and look while it's running. You'll get it

 

I'll double check the gap on the plugs, i gapped them .032 which i gathered from reading on a few threads which seemed to be the consensus versus the stock .035-.040 . The plugs i used were Champion RC12MC4 (318's) versus the ones listed in rave which were Champion RN11YCC which were also the ones installed in the truck before I swapped the new plugs in.

I guess i'll pick up a couple of cans of seafoam and go that route while i'm at it tonight cleaning the MAF. IACV, and Trottle Body. I'd like to get this sorted so i can take the truck and get it smogged so i can get the registration all sorted. I know that it will fail the OBD portion of the test if i clear the codes right before going in due to the readiness codes being set in the ecu.

 

I re-seated all the connections at the plugs and the coils as well as cleaning the maf and throttle body last night. Split a can of seafoam between the gas tank and then did the rest via a vacuum line to the manifold. Gotta love the cloud of smoke when it first starts up after sitting. I changed out the front diff gear oil last night while i was waiting for the seafoam to do its thing. Cleared the codes and so far so good. Seems to be running smoother and didn't pop a CEL on the way to work today so that's an improvement. We'll see if it holds up through the drive home tonite. If so im going to run to the smog place first thing when they open tomorrow pending all the readiness codes being there in the ECU.

 

Good luck. Every year my truck passes smog i say a little prayer and thank the rover gods.

 

lol, i know what you mean. It was that way with my corrado. Every year it passed it was like it was a miracle. Well, so far so good. Made it home from work with no CEL. Little victories I have some running around to do tonite so hopefully that will be enough to reset the readiness codes in the ecu so that it will pass smog as long as the CEL stays off

 

Sounds good, keep us posted.

I went to the 85/140 for my T/C and it quieted down nicely.

 

Well, its been over 24 hours with no CEL. I think i've managed to get this licked. I checked the truck this morning after I dropped my daughter off at school with the OBD scanner. No codes and all of the readiness monitors were set. I took the truck to the test only station that I take all of my cars to and it passed with flying colours. Off to AAA tomorrow morning to get the registration sorted now that i have the truck smogged. Thanks for every ones input on this. Glad to finally get it sorted. Now to fix the other small stuff like the small oil leak at the front of the motor, the saggy headliner, fix the cruise control and to put some elbow grease into buffing out the oxidized paint on the flat surfaces.

I'm gonna summarize what I did for people when they search P1316 in the future. I found a lot of 1316 threads with no conclusion.

-Changed out the stock Champion RN11YCC plugs to Champion RC12MC4 (318) gapped to .032.
-Changed out recently replaced (5 months iirc by po) 7mm wires for a set of Kingsborne 8mm wires
-Made sure to re seat all the wire connections at the coil and at the plugs
-Split a can of Seafoam between the gas tank and the intake manifold via a vacuum line.
-Cleaned the MAF
-Cleaned the throttle body

All of these actions combined got rid of codes P0300, P0303, and P1316.

 

dont worry about the oil leak. If you fix it at the valve cover it'll just find another place to come out of. Oil hates staying in these trucks. Congrats