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#1
01-21-2011, 12:41 PM
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Resistor or non-resistor plugs
I am preparing to do a full tune up on my w201 and was wondering if there is aany known adverse reactions with using resistor spark plugs vs. non-resistor spark plugs for my car.
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 1990 190E 3.0L 
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#2
01-21-2011, 12:53 PM
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if you do a search on this you'll find a lot of arguing and such back and forth between the two sides.
I just stuck with non-resistor types like my manual called for. Denso T20EP-U NGK BP5-EFS ******** has them or http://www.clubplug.net/ stock number 5031 You might even be able to get the NGK's at your local Napa Auto Parts.
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Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out. Check here for compatibility, diagnostics, and availability! (4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!) 82 300SD 145k 89 420SEL 210k 89 560SEL 118k 90 300SE 262k RIP 5/25/2010 90 560SEL 154k 91 300D 2.5 Turbo. 241k 93 190E 3.0 235k 93 300E 195k
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#3
01-21-2011, 12:58 PM
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Quote:
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 1993 190E 2.3 2001 SLK230 1971 LS5 (454) Corvette Convertible
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#4
01-21-2011, 02:07 PM
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i have resistors in..... bosch copper core....
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1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k  1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC]
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#5
01-21-2011, 02:58 PM
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I put in resistors and non-resistors, noticed no power difference. I bet on a dyno there would be very little, if any difference.
Just stick with copper core and stay away from the Pt + the four prong deals
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I'm not a doctor, but I'll have a look.  '85 300SD 245k '87 300SDL 251k '90 300SEL 326k Six others from BMW, GM, and Ford. Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]
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#6
01-21-2011, 03:32 PM
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Mercedes says non resistant plugs. I personally think arguing with someone who has been making cars for 125 years is a little redundant.
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600SEL '91  300E 4Matic '88 240D '83  280SE '77  350SE '73  The most complex systems can fail in the simplest way. Contra verbosus noli contendere verbis, sermo datur cunctis, animi sapientia paucis. i don't believe in the lord! He's never bought me a Mercedes Benz.
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#7
01-21-2011, 04:42 PM
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Quote:
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95 E320 Cabriolet, 169K
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#8
01-21-2011, 06:07 PM
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Get the plugs from your Mercedes dealer. PepBoys doesn't carry Mercedes parts.
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Kent Christensen Albuquerque '07 GL320CDI, '10 CL550. '01 Porsche Boxster Two BMW motorcycles
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#9
01-21-2011, 03:34 PM
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Non resistor plugs because the wires have resistance. Thats is what I have read online AND on my wires (8 ohm I think). So if you have wires with no resistance (well very low) then resistor plugs.
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1991 560 SEL / 185k miles 1992 750il / 17k miles - project car
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#10
01-22-2011, 11:28 AM
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and some dealers wont have the non-resistor ones in stock, they may give you the bosch resistor plugs regardless and just tell you that they'll work no problem.
Get them online, I think Fastlane even has some...
__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out. Check here for compatibility, diagnostics, and availability! (4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!) 82 300SD 145k 89 420SEL 210k 89 560SEL 118k 90 300SE 262k RIP 5/25/2010 90 560SEL 154k 91 300D 2.5 Turbo. 241k 93 190E 3.0 235k 93 300E 195k
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#11
01-22-2011, 01:03 PM
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Well, it's worth trying dealers if your local auto parts store doesn't have the right specification plugs. Inspect them before buying first, of course!!
I've got my plugs at my local parts guy at the dealer - Bosch H9DC0 for my '89 190E 2.6.
__________________
http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg
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#12
01-22-2011, 01:38 PM
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I got H9DCO non-resistor for $3.29/each at my local dealer. Go there first.
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2016 Monsoon Gray Audi Allroad - 21k 2008 Black Mercedes E350 4Matic Sport - 131k 2014 Jeep Wranger Unlimited Sahara - 62k 2003 Gray Mercedes ML350 - 122k
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