98 S70 non turbo loss of power

45DegreesPDX · Post by **45DegreesPDX** » 26 Feb 2018, 20:16

Just pulled out the spark plugs, and I'll definitely be replacing them.

I also noticed a crack in my alternator, think this could be an issue? I'll definitely replace it, just trying to see if it might be a source of my symptoms.

WhatAmIDoing · Post by **WhatAmIDoing** » 26 Feb 2018, 20:37

Yeah, those spark plugs are pretty well toasted. How do your plug wires look? That crack is definitely not good. With the engine running, check the voltage of the battery with a volt meter. If it's under 12.5V, the alternator is likely not supplying adequate power. And make sure you pull the distributor and check that as well.

45DegreesPDX · Post by **45DegreesPDX** » 26 Feb 2018, 20:45

The plug wires look okay, nothing too out of the ordinary, but I figured I'll replace them anyways while I've got everything taken apart. I'll be able to check the cap either later tonight or tomorrow. Am I looking for dirt and grime or just damage in particular?

WhatAmIDoing · Post by **WhatAmIDoing** » 26 Feb 2018, 21:04

You are looking for dirt, evidence of arcing (google arcing in distributor), and wear on the pins and rotor. Post a picture if you can and we'll tell you whether it looks good. I'm guessing it's probably time to replace.

45DegreesPDX · Post by **45DegreesPDX** » 27 Feb 2018, 00:38

Yeah, it looks likes its time to replace these.

Also, when I was taking off the airbox, I accidentally broke what I think is the preheat hose that connects to it. Is this easy to replace that I can do myself with some clamps?

Thanks for all your help!!

Post by **FLXC90** » 27 Feb 2018, 01:54

Yeah, plugs, cap and rotor could stand replacement. The crack on the alternator is just on the plastic ring though, right? If so, not critical

WhatAmIDoing · Post by **WhatAmIDoing** » 27 Feb 2018, 15:34

I agree with FLXC90. Time for a tune up: new plugs, wires, cap, and rotor. Only use Volvo, Bosch, and/or Bougicord (wires) for these parts. FCP sells some good tuneup kits using OE parts.

45DegreesPDX wrote: ↑27 Feb 2018, 00:38 Also, when I was taking off the airbox, I accidentally broke what I think is the preheat hose that connects to it. Is this easy to replace that I can do myself with some clamps?

You mean the rubber elbow that connects to the white line? I have a turbo, so not sure what all hoses run to/near the NA airbox. Picture would help.

45DegreesPDX · Post by **45DegreesPDX** » 27 Feb 2018, 16:12

No it's silver and rigid. Looks similar to a dryer hose connection and connects behind the engine near the firewall to the exhaust system. I'll post a picture tonight.

Post by **erikv11** » 27 Feb 2018, 16:49

Broke preheat hose is of no consequence, take your time on it, and yes you can easily DIY replace this no-clamp hose. You can get a generic replacement from Autozone or similar (I know they have them at Advance Auto and O-Reilly's, around here).

For where you live in Portland OR, you could also just throw away the preheat hose and inside the air box wedge the flap permanently to the "cold" (outside) air side.

WhatAmIDoing · Post by **WhatAmIDoing** » 27 Feb 2018, 17:08

45DegreesPDX wrote: ↑27 Feb 2018, 16:12 No it's silver and rigid. Looks similar to a dryer hose connection and connects behind the engine near the firewall to the exhaust system. I'll post a picture tonight.

Oh that hose. I wouldn't even worry about it. It's hardly important. Should be easy and cheap DIY fix.

98 S70 non turbo loss of power

Re: 98 S70 non turbo loss of power