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Hi All! I've been trying to diagnose what's going on inside my A4LD, but I'm running into some things. Right now, I'm doing about 3k RPM at 65MPH, and 3.2k RPM at 75 MPH. (3.55 rear diff, standard 235/75/15 tires) I am certain TCC does not lock up, due to the fact that if i tap the break...

Hi guys! I had posted it in my registery, but perhaps I'll get an answer here :) Unfortunately, I have some weird sounds coming off the 4.0 OHV engine at about 2.5-3k RPMs. Does any one have any idea where they come from? As posted in the video description, I previously thought it...

Hi everyone! I've been noticing high RPMs on my '91 Explorer with A4LD. I'm doing about 3500rpms at 75mph. (gearing 3.55). The computer throws a OBD-I code 89 (Converter clutch override solenoid), which confirms my findings. No immediate revs increase on brake tap, no revs decrease when...

Hi guys, Today I finished up my project of swapping the heads in my X, just when was trying to start the X, the fuel pump wouldn't prima, but the engine would turn over. We've tried a couple of things to see where the problem might be. 1. The fuse is fine 2. We tried shorting the...

Hi Everyone! I was wondering if it is possible to replace the schrader valve on the fuel rail of the 4.0 OHV (1991). I do have a fuel pressure testing kit with tons of adapters, but none will fit on the schrader valve on the fuel rail. There are schrader valves included in the fuel pressure...

Hi guys! I've been on this forum for a while and thought it was about time I made a registry for my X! The 1991 XLT has been mine for almost 1.5 years now and using this forum as an incredibly useful resource I've been able to do quite some stuff myself, even though I had no previous...

Hi all, I am planning on replacing my head gaskets as I am losing coolant and have yet to find a leak. All the parts are coming in, but I was wondering. If the heads on there are original; would it be worth it/wise replacing the heads if I can get them both for some 300$ in total? It's a...

All, I'll be replacing my rocker arms and pushrods tomorrow in an effort to get rid of the nasty rattle my X has developed in its 4.0 OHV. Now, I know the lifters might be the actual cause of the rattle, but as those parts are already expensive in the US and even more so in the Netherlands...

Hi All, I recently noticed my front hubs (both left and right) being hot after a drive. I checked the bearings, which seemed fine, but were nearly dry! So i re-greased them and tightened them properly, but the heat is still there. It's hot to the point where you're not sure if you can still...

Hi All, I was wondering, would it be harmful to the X to drive with the radiator fan removed, for a bit? I am suspecting the fan may not be balanced and causing a vibration and wanted to test it out. Heat is not really an issue I think, as it's quite cool here right now (low 60's f) Let...

Hi All, After doing a lot of searching on this forum about the appropriate tire pressure. I am using the formula as described a lot on the internet Tire_pressure_in_Bar = Maximum_tire_pressure_in_bar * (Actual_weight_on_tire_in_kg/Maximum_weight_on_tire_in_kg) ^ 1.25 The door panel on...

Hi All, Last night my '92 Explorer made the decision to no longer support me in locking my tailgate. This came after I had been out in about 10 degrees F. weather and opened it to remove some stuff. Upon closing it, it would no longer lock. Before I was able to lock it with the pin through...

Hi everyone! I've been reading this forum for a while now and have already learnt a great deal! I just purchased my first car, a 1992 Ford Explorer. I'm absolutely in love with it and want to get it in as great a shape as possible, therefore I think it's inevitable I'll have some very stupid...