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Thanks for the advice. Jacked it up again this morning and the driver side wheel has a good bit of play when tugged at 6 and 12. The passenger side feels nice and tight. After reading other threads, it sounds like most like the Timken hubs - a little over $100, much better than I was...

My 4wd '96 XLT is making a loud hum / howling noise with driving straight or turning to the left. However, if I turn the steering wheel a few degrees to the right, it all goes nice and quiet. It doesn't really make the noise while rolling in the driveway, I've gotta be about 20+ mph. Front...

Good suggestions on removing the caps - didn't suspect anything like that so I never pulled them with the engine running. Will check it out once its back together tomorrow. Still seems strange that all 6 ports are doing it, not just one or two. The upper intake gasket looked perfect, the...

I've had a good size oil leak from both valve covers on my '96 4.0 ohv engine. A little over a year ago I replaced the heads on the engine and used new rubber gaskets. So when I pulled the covers today, I was a little surprised at what I found. I had 6 oil leaks - once at each exhaust valve /...

New gaskets were part of the fel-pro kit from Orielly. Good thought, but I doubt that's it and I really don't want to pull the heads again unless it is an absolute must.

I replaced the heads on my '96 4.0 OHV last February and had a real problem getting it to run. (some of you might remember this thread:http://www.explorerforum.com/forums/showthread.php?t=268590) Turned out that if I torqued the rocker arm assembly down to 46 ft-lbs per the haynes manual...

Blake, How did you resolve this? I had a similar issue and backed off the pedistal torque to increase valve lash and that made the engine run better (stopped backfires through the intake). However it's still not quite right. I'm curious if you found a setup that worked? Thanks

does anyone have a picture of this connector? Is it only on X's that came with the tow package? My '96 XLT doesn't have the tow package. I did find a grey connector tucked up behind rear bumper on the driver side but it only had 2 wires that connect to the rear license plate holder lamps...

Ever since I had to replace the cylinder heads a few months ago, I've been watching my temperature gauge like a hawk. I replaced the thermostat (195F) and the sending unit to the gauge. The old setup never moved much from the horizontal cold line. Now the needle stays at the middle of the...

Did you ever find your leak? I have one that sounds very similar and its frusterating! I hope you found something.

Thanks for all the help - got the Explorer running again! It seems that the culprit was that the pushrods were a little too tight and holding open the valves. Elbow - your comment about turning the pushrods easily is what got us back on the road. The rod for #2 exhaust valve was always tight...

Thanks for the info on the heads. The originals were 95TM's. I can't find a specific stamping on the new heads, but they are supposed to be new castings (aftermarket) and shouldn't have been shaved down any. I'm almost positive they had the same type of heart shape combustion chamber. I will...

The alternator tested out bad. However I don't think that is the root of this issue. We pulled each spark plug wire - one at a time - to try and pin down a misfire to a single cylinder and none eliminated the clunking / pinging. It appears to be across the board or multiple cylinders. With...

I checked a few grounds. 0.5 ohms from the negative battery terminal to the block. The grounding strap from the firewall near the PCM to the block was about the same. Anywhere else specific to check?

The coilpack has cylinder numbers next to each terminal. They are in the 1-2-3 / 5-6-4 arrangement. elbow, at first I was thinking it was a single cylinder issue too. But the universal plug fouling and fairly balanced compression I leaning against it. In the past, if I've had a misfire...

No offense taken on plug wiring. We've had them all on and off several times and done tug-testing to make sure we had the right ones from one side to the other. I've actually wondered if my coilpack wasn't wired 1-2-3 / 5-6-4. Also, all 6 plugs are getting fouled with carbon. #6 actually...

JD, no codes still. One strange thing is that the battery light on the dash is coming on when the engine is trying to run. We'll give it gas to get it to 2000 - 2500 rpm and the battery light comes on.

Ranger, the fuel pressure is about 35 lbs before cranking. When it first starts up it drops to about 28 lbs and then goes back up to ~37 lbs. Giving it gas or increasing vacuum with a hand pump causes fuel pressure to drop. I've checked voltages and resistances on the IAC - they're normal...

How quickly should the codes appear? I've never gotten any yet though this whole ordeal - but the battery gets unplugged pretty much daily as an early step in just about every Haynes manual test. It's not been run long enough to get to normal operating temperature yet.

Does it need a certain type of clamp or fitting? I'm guessing it connects between the spark plug wire and the plug itself. ECM = PCM? I'd still rather believe it's the new heads, but with all 6 plugs fouled evenly I"m not so sure.

jd - Orielly's said I couldn't use a timing light on it since it doesn't have a distributor. They sell a $40 and $120 light but said neither would work. We did unplug the "shorting bar" near the PCM which puts it to its base timing mode, eliminating the computer control. No luck - died just...

Here's a video of the very rough idle / choking issue our Explorer has after replacing both cylinder heads. A full description of the troubleshooting thus far is in this http://www.explorerforum.com/forums//showthread.php?t=268590 Sorry for the double post, but I wanted to get the...

The fuel pressure regulator is a little weak but working within specs. Here is a YouTube video of the issue: At low rpms, it sounds like it wants to tear itself apart from the inside out....:rolleyes:

Breaking news - all 6 (brand new) spark plugs are very black with carbon soot. They aren't oily, its fuel residue and they smell like it. CKP sensor did check out OK. Maybe they're all sooty from the mis-fires, but I'm thinking its a fuel delivery issue that's causing it. I pulled the plugs...

The explorer is still winning this fight. EGR valve = OK DPFE = OK EGR regulator = OK TPS = OK IAC = OK / cleaned CKP = maybe ok? The Crankshaft position sensor is getting the 1.5 volts from the harness. However when I hook the voltmeter up to the sensor and crank the engine I get a fairly...