Friend of mine was given an immaculate one owner Grand Voyager with the 3.3 V6, 155k miles. It was last run 7 years ago, the old man who owned it ran it out of gas and drained the radiator and parked it under his carport. Our plans are to change all the fluids, new belts, new tires, new spark plugs, and make it a reliable daily driver. The intake has to be removed to access the rear plugs, would anyone have the torque spec and sequence for the upper and lower intake? Also is this engine metric or standard?
1990 Plymouth Grand Voyager
- Thread starter mobilnissan1991
- Start date
It's a Mitsubishi engine ( I feel for you) so it's all metric.
You may find a video helpful. Search YouTube for "change spark plugs 1999 plymouth grand voyager". There are several videos, some for the related Dodge Caravan with the same engine. The video by AJ Pierce is detailed.
I heard older Mitsubishi V6 engines installed in Chrysler products always had bad valve stem seals past 100K miles.
A 3.3 L engine was a great engine in my 1995 Ply GV and fairly easy to work on. The 3.3 and 3.8 V6 were Chrysler engines. I dont think the OP has a Mitsubishi engine if its a 3.3. The 3.0 L was a Mitsubishi. We had a 3.0 L in one of the early year Caravans (1988 maybe) and it was junk.
Anyway, hope you have a 3.3 L in there. Best to consult You Tube video or get a Haynes/Chilton manual (some libraries may still have hard copies around), Good luck with the friend’s ”new” vehicle. Those vans are certainly handy.
Anyway, hope you have a 3.3 L in there. Best to consult You Tube video or get a Haynes/Chilton manual (some libraries may still have hard copies around), Good luck with the friend’s ”new” vehicle. Those vans are certainly handy.
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3.3 isn’t Mitsubishi, that’s a Chrysler engine. Better than the 3.0 Mitsu V6, IMO. Rear bank plugs should be accessible from underneath, on a lift, or even a tall set of ramps (I had one, back in the day). Beware the Ultradrive 4 speed automatic, if it has one-I had to have mine replaced with a Chrysler updated reman one.
I did the rear plugs from underneath on my ‘90 3.3, I don’t remember pulling a manifold (but it was a LONG time ago). Engine should be mostly metric, AFAIK.
I know I shouldn't generalize from a 1st-gen ('90) to 4th-gen ('07) van, but I recently changed the plugs on our '07 Dodge Grand Caravan with the same 3.3 engine, and it was not at all hard.
The 3.3 is a pushrod, not DOHC, engine, so the intake manifold does not have to come off. (The plugs are not at the top centre of the head, but rather off to the side.)
The front bank is easy, and the rear bank is harder (because you're working by feel only) but still not bad.
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I am naturally a skeptic. I would first fill the radiator with water, fill the tank with some fresh gas and jump start the vehicle to make sure the engine runs and the tranny seems go in and out of gear as well as a short ride if the tires permit it. Wouldn't want to spend all that money if the drive train needs serious repairs, who knows exactly why it was parked for 7 years. Did I forget to mention that I am a skeptic?
