'91 TPS voltage
Thread Starter
Instructor
Joined: Jun 2005
Posts: 193
Likes: 0
From: woodinville washington
'91 TPS voltage
1991 L98 coupe
my TPS voltage is .77V at idle and goes to 9.5V at WOT, i've heard it should be around .54V at idle to 5V at WOT but some say the 90-91 is different than others with how the computer uses the TPS, should i replace my TPS?
my TPS voltage is .77V at idle and goes to 9.5V at WOT, i've heard it should be around .54V at idle to 5V at WOT but some say the 90-91 is different than others with how the computer uses the TPS, should i replace my TPS?
Le Mans Master
Joined: Feb 2006
Posts: 8,753
Likes: 9
From: Louisiana
Your normal voltage ranges should be in the FSM. If you have a FSM use it to check the wiring out and the normal voltages. I don't have that refrence information or I would post it. I wouldn't spend money on a new TPS until you confirm that one bad. Perhaps someone with a 91 FSM can chime in.
Melting Slicks
Joined: Feb 2006
Posts: 2,753
Likes: 15
From: backwoods upstate ny
your ecm takes any voltage between o.3 and o.9 vdc and resets itself to use this as ''correct'' throttle idle 0% ...voltages at idle outside those will turn on the ''ses'' lite
the ecm outputs a nominal 5.0 vdc signal to the tps...if you are seeing 9+ vdc in that circuit, something is wrong, prepare to see smoke.
the ecm outputs a nominal 5.0 vdc signal to the tps...if you are seeing 9+ vdc in that circuit, something is wrong, prepare to see smoke.
