Its been several years since adjusted a tps and forgot which wires to hook to.
I did'nt use the merc adapter, i took straight pins and pierced the wires to hook the volt meter to but forgot which wires. I had wrote down the volt ranges.
Thanks in advance
Terry Tanner
Is there any possibility that you could identify your engine.... preferably including the SERIAL NUMBER?
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
1998 225 EFI ser.# 0g699539
I adjusted the idle like you said and worked great. Just need to readjust
the tps. Thanks!!
Terry Tanner
We use ONLY the Computer Diagnostic System, or the TPS Test Harness for adjusting the TPS.
As I understand from others that have attempted the "wire pinout" method, it's easy to obtain BACKWARDS readings.
Try the two outer pins FIRST (3-wire TPS).... Four wire-plug TPS units need to use the appropriate test harness.
You're looking for .95VDC at idle (+/- .05).
Most run quite well in the .95-.98 VDC range.
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
Terry Tanner
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