nelstomlinson

My '96 Legacy recently began starting hard, have to crank for 10+ seconds before it starts to fire. Once it's running, it runs great. Fuel mileage has been about 24-ish on the highway, down a little from what I expect, but this is winter with a lot of idling and bad road conditions. About the same time this started, the CEL came on. Code reader says it's P1100, interwebs say that's intermittent MAF error. I unplugged and wiggled and re-plugged the MAF connector, cleared the codes, and drove it a while. The code still hasn't come back, but the hard starting remains. The battery is in fair shape, and the starter spins the engine as quickly as ever, per my ear. While I drove around, I looked at some of the data on the scan tool. When I first started it, the engine coolant temp was 25F. That's probably about right. It quickly warmed to 180F, again about right. I noticed steady readings from the MAF of 0.01 at idle up to 0.11 or so accelerating up a hill at full throttle. Spark advance about 20 degrees at idle, up to around 40 when accelerating. I can't see any signs of any problems, but I really don't know what to look for on these spark ignition engines. I'm not sure what else to try, but I think I better fix this before I burn up a starter. Any ideas?

Absolutely top off the lube in the differential! I'm pretty sure the reason one of my '96s is now two wheel drive is that I neglected the leak in its rear differential, and it eventually ran dry and the gear box self-destructed. It's easy to top off if you can jack up the rear end a little, and replacing the differential is way harder.

@jonathan909, we saw nighttime lows of -48F before Christmas, and friends near the river saw -58F and their #1 heating oil gelled up. Back to +15F now.

I might have answered my own question: the manual calls it a crankshaft sprocket, and searching Subaru, I came up with a part number of 13021AA16A. Looked up that part number on fleabay and saw 24 teeth and the right timing tabs on the back: six tabs, symmetric but unevenly spaced.

The tabs on the back are the least of the worries, that damaged keyway is way beyond usable. Don't know if it's clear in this pic, but the keyway is wallered out to the point that it will slop enough to feel on the new crank nose. I think maybe the damage was caused by the crank nose bolt being loose?

The crank nose pulley and harmonic balancer are both pretty well ruined. The pic shows the crank nose pulley, with the woodruff key turned sideways. The key is chewed up, and it wallered out the keyways in the crank, pulley and balancer. Where do I find a new pulley? What part name or number do I search for?

I don't know the history of this engine, these headbolts may have been reused before, may have been overtorqued, who knows? From the pictures, I'm going to have to get some metric 12 point sockets for those headbolts. Darn. I am _not_ trying to accumulate more metric stuff.

I'm hearing it's hit -40 in Fairbanks finally. We're getting wind and almost -30F. The cold came very late this year, and we've gotten more snow than we wanted. Probably going to have to wait a while for the Chinook to hit us, daytime highs slated to be well below zero as far as the weatherguessers can guess.

Ordered Felpro headbolts, again, don't want to take a chance on the serious stuff.

Thanks for all the help. I'm going with the Subaru #11044AA642 head gaskets, and I'll try the enginetech set for the rest. It claims to have MLS head gaskets too, but I'd rather not take a chance on that. Bad intake or valve cover gaskets are a smaller problem than a bad head gasket. I'm planning to take the heads up to the machine shop in Fairbanks next time I go up there, hopefully after the temps get back a little closer to zero.

@forester2002s, the subie website tells me that's for a later model? Does that fit my 2002, also? https://parts.subaru.com/p/Subaru__/Engine-Cylinder-Head-Gasket/49223394/11044AA642.html

I'm finally getting around to installing the new short block I got for my '02 Legacy, and I just realized that the short block did NOT come with the necessary gaskets.Rock Auto has ITM and Enginteck kits for ~$90, and AJUSA for ~$250. Are any of those likely to be adequate? What's a good source for good stuff? Ideally I'd like to get head gaskets that will last.

It has been popping out of 4th. We put it back together with a new friction disk, he's back on the road for now. We'll try fixing that issue another time, when I don't have a stack of things to do in the shop. Will our '99 Legacy tranny work in the '96? Next spring we have to drag that into the shop and strip parts off it, anyway. That car had the DOHC engine, and not a lot of miles on it. The transmission is probably fine.

Looks like we have to pull the transmission, take off the two back sections, split it, then we can pull the input shaft and get the bearings off? Have to get the preload right as we put it together? I've got way too many projects, don't have near enough time. We could pull the tranny and roll the car out of the shop and take the tranny north next week or so. I'll see what my son wants to do.

Or, we could wait for spring so we can get at the '99 with the manual transmission to swap in. I'm thinking now that if the next flex plate lasts 6 months, we'll have time to make the swap before the next breakdown. We'll call the gearbox shop up in Fairbanks for a quote on rebuilding the tranny, too.

A full 1/8" side to side, 3/16" in and out. Sounds like that's definitely bad. Is it plausible that could be flexing the friction disks and causing them to fatigue and break?

We've been poking about since I first posted, noticed there is some side to side play in the transmission input shaft. That seems suspicious. I can't find a spec for that in the manual. Should there be noticeable play?

Eh, maybe. We're getting Napa's best, for whatever that's worth.

Eight months ago, the friction disk in the '96 broke: the middle broke off from the outer circumference. This week, the new clutch failed the same way. This is my son's car, and I've ridden with him enough to be pretty confident he's not stressing the clutch abnormally. This time and last, there was just moderate wear on the friction material, the sort of wear you're expect from 8 months of sedate driving. Anyone have any ideas what might be causing these repeated failures?

Sounds as if I'll pull the driveshaft. That's not terribly hard, and I'll have it back on jack stands in a week or two to repair the exhaust system, so that''s half the work done already! Edited to add: the carrier bearing got destroyed, and the ring gear carrier was wobbling on just the passenger side bearing. I yanked the ring gear carrier out, so there is nothing there to hold the stub axles. I only shoved the empty diff case back in for in case it's structural, and to hold the drive line.

'96 Legacy wagon, 2.2L, automatic. I put the FWD fuse in, and took the guts out of the rear diff, just left the pinion in to hold up the drive line. I put it in drive while up on blocks, and I noticed the drive line is still turning a bit, and the pinion bearing isn't getting lube, of course. Is that drive line turning just a little bit, won't get faster at speed? Or am I going to have to take the drive line out entirely? It's probably going to get driven hundreds of miles before I get a different differential in it.

The little bit of oil that was left was black, but no sign of water. This thing has never been in more than a heavy dew since the last time I changed that oil.

That was the problem: with everything loose, and the two studs started, we couldn't get the four front bolts started at all. The angle was wrong and we couldn't keep the threads from hanging up on the edge of the holes. That is the worst possible design! My son is saying that next time we should yank that tunnel out, and weld some nuts on the top so we can just shove the diff into place and stick bolts up through. I think he's right - that'll be less trouble than going through this again. Also, on a separate issue, I suspect that the subframe crossmember the back studs go into was slightly warped, because the driver side bushing got pulled WAY out toward the diff when I tried to tighten those nuts afterward. Couldn't really see anything out of straight or out of square lying underneath, of course, but something isn't right.

The old, gutted rear diff is back in place, and that was amazingly hard to do! Is there an easy way to get it back in place and all the bolts back in? Those four that come through the front of it were about impossible to get started in the holes. The angles were all wrong. We were jacking and hammering and prying for hours.

I have one that should work under the parts car, just waiting for Breakup so I can get at it. -10F and 16" of snow is NOT ideal conditions for pulling parts.