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Re: help with 92 silverado idle/T.P.S sensor problem please help
Well it did actually tell the coolent temp and other info, here it is again
batt v 13.6
engine rpm 875
coolent temp 120
esc counter 192
exhaust 02 moves from rich to lean and back and forth
fuel pump v 13.6
iac position 73
idle req. rpm 850
loop status open
map v 1.49
02x MV 448 and goes up
o2s crosscnt 158t
prom id 5731
tps sensor (v) 0.45
Now i just checked with a volt meter and this is what i got.. there are 3 wires on the tps sensor, one yellowish has 05.0 volts the other which is blackish brownish has 00.5 volts...and the black one seems to be neg..now this is after i turned the truck disconnected the tps sensor and reconnected..here are the numbers when all in normal, meaning when i turn the engine on without disconnecting the tps sensor....which is normally when it fails to raise the rpms......Now i just tried it in the normal way, which is without disconnecting the tps sensor and the voltage on the tps sensor on two of the wires which are the 2 close together...is the yellow same volts as last check and the wire next to that one is still the same...Except when i tried to check the neg wire on the plug with the yellow wire and the harness unplugged that raised the rpms on the engine without the plug being hooked up to the tps..i now know it is definitly a neg issue since all other wires are good..
which the plug look like this....
_____
Black/brown wire -----> |* * | <------ Yellow wire 05.0 Volts
.05 V -- --
|*| <-------black which seems to be neg.
now in this case what can i do to fix that should i attempt to put a negative wire down to that plug...also i have changed the tps sensor, purchased one new at the autozone here, didnt fix the problem...so i went to the wrecker and bought another one, and still nothing, now i know it is not a sensor issue but a negative, because when i tried the neg and the yellow 5.0volt wire in the harness with the leads of the volt meter the rpms went up...thanks allot
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