Keyword Analysis & Research: 3800 series 2 iac


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Frequently Asked Questions

What kind of engine does a GM 3800 Series II have?

The GM 3800 Series II engine, introduced in 1995, is quite a different engine from its predecessor, the Series I engine. While the stroke for the 3.8L engine remained at 3.4” (86 mm), and the bore remained at 3.8” (97 mm), the engine architecture changed dramatically.

Why didn't the 3800 have a balance shaft?

Unfortunately, the engine still had a severe primary imbalance because it was a 90° block with a 120° firing order. GM engineers realized that the 3800 would still need a balance shaft to make it suitable for the upscale FWD cars later on.

When did the Ford 3800 get a new motor?

The 3800 was completely updated in ’95 when it became the Series II motor that was lower, lighter, smoother and more powerful than any of its earlier variations. Amazingly, it’s been installed in more than 6 million vehicles since 1995.

Does the PCM have to relearn the IAC after replacing the plunger?

Yes, The PCM does have to relearn the IAC position after it is replaced. It is normal to have the plunger closer to the housing when it is new, if it was extended like the one you took out, then it could become damaged during install.

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