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Q: Engine number location on 1999 Volvo S70

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My water pump is leaking. I want to replace the pump, timing belt and tensioner at the same time. The parts store says it could have a manual or automatic tensioner and they need the engine code. Where is this number located? Also I need to change the ABS module. Where it is located and is there special equipent needed to change this module?
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ABS modules do go bad it is in the engine compartment near the brake booster/master cylinder. The location of the engine number should be in your owner's hand book. Check here or try this link you may be able to down load a free copy of the owner's manual for your vehicle
A non turbo engine code should be B5254S. B = gas engine, 5 = cylinder, 25 = 2.5 liter, 4 = 4 valves / cylinder, S = Suction engine (non-turbo) however I think what they really need is the last 7 digit of the VIN.
If this have a coil on each spark plug there should be a manual tensioner, if there is a distributor and plug wires are going to the plugs, there should be a hydraulic tensioner.
The front timing cover can be removed easily and the tensioner will be visible.
Do you want to replace them by yourself? I'm not questioning your mechanical skills, but you know if the alignment is incorrect there will be a serious engine damage.
The other thing, I have seen few aftermarket manual tensioner failed shortly after the replacement. I wouldn't go to a parts store to get mine timing components, I'd choose the dealership and get OE parts.
Anyway, even if you think you can handle this job, GET A REPAIR MANUAL and read it first.
The ABS controller is near to the master cylinder / booster assembly. You can't miss it, there are brake lines goes to the hydraulic assembly. The black box is mounted to hydraulic unit via torx bolts.
Disconnect battery before you start to working on it.

FYI the ABS module is mounted upside down and you are going to need a special torx socket to get the screws out. how do i know b/c when i odered a replacement for my 99 s70 the parts dealer(FCP Groton) informed me that i would need the special torx socket and i did. the screws have a nipple that sticks up in the center of the bolt.
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