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#1
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My '90 300SE has a slight miss at idle. I replaced the plugs 5K ago and they looked good. I remember reading here a while back about looking under the hood in the dark.
I did so tonight and noticed some arcing. The wire from the coil is running between the thermostat housing and a little metal bracket so it touches the housing. I see a constant arc at that point. The wire has a slight cloudy mark where it touches the housing. I also observed an intermitent, random flash in wires #1,2&3 between where thewire comes out of the valve cover and the spark plug. There are more flashes at #1. I can't remember what this means. The PO replaced the wires about 30K ago, with what I don't know. The shop that has serviced it uses good quality parts though. Can I simply re-rout the wire from the coil? Or does that grey cloudy mark mean The wires are shot?
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Mr. BILL 91 300E 120K 90 300SE 275K (sold) 92 BMW 525iM 120K 90 BMW 525iA 175K 85 300D 175K (sold) 84 300SD 245K (sold) |
#2
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You need to replace your wires. Make sure to get original Bosch equipment.
Had a guy buy some wires at Napa once for $29.95 or so. He came to me with the engine shaking real bad. His car even had a hard time starting. He was better off with his old Bosch wires. Anyway, we ended up returning the NAPA wires and getting the originals. I couldn't belive a store could even sell something like that. You get what you pay for. There is a reason why Bosch wires cost over $100 per set. Vin [Edited by vinamg on 01-14-2001 at 12:15 AM] |
#3
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Thanks Vin,
AutoZone is promoting Bosh wires now. Are these the same as OEM?
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Mr. BILL 91 300E 120K 90 300SE 275K (sold) 92 BMW 525iM 120K 90 BMW 525iA 175K 85 300D 175K (sold) 84 300SD 245K (sold) |
#4
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Not too sure, you can check it out. They should come with a warranty card from Bosch. You can also go by the price. I know they cost around $115 for the 6 cylinders.
Another option is to order it from mercedesshop parts. Vin |
#5
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On many MB's the OE wires are Beru, & the replacement Beru's are much better than replacement Bosch! The aftermarket Bosch are not solid core copper, but resistor(woven fifer) wires like American cars use.
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