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  #1  
Old 05-13-2010, 10:58 AM
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Join Date: Apr 2000
Location: Falls Church, VA
Posts: 5,318
3.5 Throttle Position Switch - Replace with 4.5 Unit?

Does anyone think this will work?

The 3.5 has a surge on light acceleration, and flakey readings from the switch when moving the throttle. The idle speed contact adjustment is perfect. I took the cover off the TPS, and cleaned it (not at all dirty), and observed that the track of the contact is deeply grooved into the circuit board. The cleaning did not improve the situation. I think it's TU and is certainly not going to get better with time and driving.

The 3.5 TPS is NLA/NOTP (not on this planet).

The 4.5 switch looks the same except that it has a full-load position. I am quite sure I can modify the connector to fit.

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Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe

Last edited by ctaylor738; 05-13-2010 at 11:22 AM.
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  #2  
Old 05-13-2010, 01:39 PM
meltedpanda's Avatar
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Join Date: Mar 2003
Location: Central Ky
Posts: 6,268
dont see why not, same basic technology, as long as you get the required readings full closed and on its way to the full throttle. Is it 10 pulse points?/
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Ron
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  #3  
Old 05-13-2010, 04:30 PM
Brian Ostosh
 
Join Date: Mar 2007
Location: San Diego
Posts: 504
t p s

I concur, (big word I learned in management meetings),

I have many D-jet spares in case,

Melted, I have a bucket of anodized blue resistors.
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  #4  
Old 05-13-2010, 09:42 PM
meltedpanda's Avatar
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Join Date: Mar 2003
Location: Central Ky
Posts: 6,268
if you want to part with a .4 ohm PM me
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Ron
2015 Porsche Cayman - Elizabeth
2011 Porsche Cayman - Bond,James Bond
Sadly MERCEDESLESS - ALways LOOKING !
99 E320 THE Queen Mary - SOLD
62 220b - Dolly - Finally my Finny! Sadly SOLD
72 450SL, Pearl-SOLD
16 F350 6.7 Diesel -THOR
19 BMW X5 - Heaven on Wheels
14 38HP John Deere 3038E Tractor -Mean Green
84 300SD, Benjamin -SOLD
71 220 - W115-Libby ( my first love) -SOLD
73 280 - W114 "Organspende" Rest in Peace
81 380 SL - Rest in Peace
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  #5  
Old 05-14-2010, 01:10 AM
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Join Date: Jun 2004
Location: brisbane,Qld.Australia
Posts: 2,066
Any of the Djet TPS should interchange OK.

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