TPS Location
#1
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TPS Location
I have a 2012 Tahoe Q5i with Mercruiser 4.3TKS Alpha One (serial # 1A637788). For some reason i can't locate the Throttle Position Sensor. Any pics or help would be greatly appreciated. I get a loud alarm when going to forward and reverse but not in neutral. I called the dealer and he said he was pretty sure it was the tps
#2
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Thanks for the serial number, and you are correct your motor has a TKS carb and therefore does not have a TPS. The dealer either doesn't care, didn't actually listen to what you were saying, or a DA.
Do you have digital controls or cable?
Do you have digital controls or cable?
#3
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Here is what they look like
#4
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Been thinking more about it and it could be your oil pressure switch. This switch sounds the alarm when oil pressure is low but also powers the fuel pump. It could be when you go into gear the oil pressure drops just enough to turn on the alarm. It would turn off the fuel pump but you wouldn't know it right away with a carb.
My guess is your oil pressure is fine and what you see on the gauge has no effect on the switch. Easy way to prove it, is when the alarm sounds, pull the plug off the switch to see if alarm stops.
My guess is your oil pressure is fine and what you see on the gauge has no effect on the switch. Easy way to prove it, is when the alarm sounds, pull the plug off the switch to see if alarm stops.
#7
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If its the switch the part number is 87-8M0070108 and is item 10 in link below.
Be sure to check your oil pressure is not low (not under 10 psi at idle).
When you shift in gear, if you give it a little throttle does it stop?
Genuine Mercury & Mercruiser parts. Electrical Components
Be sure to check your oil pressure is not low (not under 10 psi at idle).
When you shift in gear, if you give it a little throttle does it stop?
Genuine Mercury & Mercruiser parts. Electrical Components