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The 1990 dodge caravan has a transverse mounted engine therefore it doesn't have a fan belt!
The fan is electric, not belt driven. The serpentine belt is has a spring loaded tensioner. If the belt is loose, the tensioner has failed.
The belt diagram is usually located on a sticker on the fan shroud under the hood.
Why won't the radiator fan start on my 1991 dodge caravan?
A fan belt diagram can be obtained from most auto-parts stores. The store that the fan belt was purchased from will most likely have a fan belt diagram.
NoNo
It should be on the fan shroud. If not, it is in the owners manual/ If yoou don't have one, go to a used car lot and find a like car and draw a schematic.
diagram FOR ESPACE 2.2 DIESEL fan belt fitting 2000 reg
i would think it has a electrical fan unit this is true, and I have reason to believe there is no such engine type as a V-4. Not in the caravan industry. They either are 4 cylinders or V6.
radiator fan relay
You can spray it with a LITTLE belt dressing but don't overdo it. It also may be caused by sosmething not being alignied in the pulleys.
When you ask, "what does a fan belt diagram..." I can only guess that you; 1. Need the belt diagram 2. Want to know what the belt diagram is for. In answer to #1: Check around the engine compartment or in your owners manual if you need a diagram. In answer to #2: The diagram is for the proper location of the serpentine belt on the engine pulleys