I need a diagram of belt routing for a 89 chevy shortbed with no a/c or smog pump. Its a 5.7L

It's the same only shorter. Auto parts stores will be able to give you the right belt when you tell them about A/C without smog pump. The belt wrap diagram is on a sticker under the hood.

better check that info again. inspect belt routing diagram and vacuum diagram for thermactor pump and thermactor air system parts being present on your calibration. to my recollection there was no thermactor air used. where would they put all that plumbing?
pump, diverter valve, exhaust check valves, upstream and downstream air tubes? a ford has a label on the radiator support depicting the usage, hose color, and general vicinity in a schematic for ford technicians to identify. there is also a belt routing diagram that depicts the pulleys for the components. you dont have one...right?
you may have a code glossary for older vehicles. get the right manual at the library for free and restart diagnosis. or goto the emissions authorized repair facility and get the question answered after a quick self test

first is alternator/ water pump/ crank... second is power steering and smog if equipted.. last is ac compressor..

Hope this was very helpful.

Hi Antiagordon4,
Here are two diagrams of belts. I don't know what engine size you have but these are for the V-8s. The tensioners are spring loaded and will take a 3/8" drive wrench or belt tool to unload.As far as removing the smog pump,that's going to be trial and error on your end. You will need to measure the length for the belt less the pump. If you use a string to route like the belt and then lay it out flat.Use a tape measure to determine the length. You will need to subtract 1/2" or so for the tensioner.Take that information and the number of ribs to the parts house and they should be able to find a belt to fit.I hope this helps.If you need anything else,let me know.Chuck

back belt nearest the engine goes around the crankshaft pulley and the power steering pump
next belt out goes around crankshaft, power steering pump water pump and ac compressor
next belt goes around crankshaft water pump and alternator
last belt goes from water pump to smog pump

454 with ac and a.i.r.

I would bet it is the belt tensioner or belt idler, but can not be sure as I can not look it. At one time there were belt routing diagrams on a sticker under the hood, but I do not know if your Explorer was one of those. If I find a link to the belt routing I will post it for you.

Bob

I've been looking and I can't find a pic of the actual diagram. However, here's how it routes. I goes around the alternator, to the water pump, then to the crank pulley in between the power steering v-belt and the A/C v-belt. Here's a good view of the belts.