Question about 1998 Mercury Mountaineer

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1998 engine identification. 4.0?

I had posted on here about an overheating problem. So as I began the work, I noticed something different that was in the shop manual versus what the engine showed. For one thing, the thermostate housing was shown being bolted into the engine block. Now on our engine, it is in a plastic container, held in by 3 screws that resemble wood screws.

This is a 4.0 engine, as the cover over the engine says it is. I also noticed that the intake manifold was made of plastic, I think, but was split into 2 parts that go down the middle of the engine, again a discrepancy from the shop manual. Is there a chance that this is either an older or a newer engine, or is the book just not showing you everything? That thermostat housing kind of threw me seeing it like that. I looked for some identification marks on the engine but I found none.

Is there a difference between an explorer engine, and a mountaineer engine, as far as physical appearance?

The manual shows that there was a metal plate, where as the mountaineer had a flat plastic shroud that had the 4.0 stamped in to it. This shroud covers the top of the engine. The oil fill is on the other side of the motor also. The picture they show of the 4.0 in the service manual, does not look like the motor that we have in our 1998 mountaineer, The manual is a Chilton Manual, and covers 1991 to 1999. Thanks.

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Explorer engine is designed for road running its ability is to run fast on cemented or galvanize.road .the mountaineer is designed to run on heavy and muddy roads . And there design

Posted on Jul 27, 2009

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