Question about 2001 Chevrolet Corvette

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My tps dosnt have a blue and black

of the five leads that I have on my TPS the closest color is Dark Blue,, do you have any more suggestions? also the color of tach wire and is it in a loom or ?

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The tach lead is in the main harness . i'm not sure if you have the engine im thinking of LS6? ok as far as the tps you could have several that have the required voltage but i would start with the blue.

Posted on Sep 01, 2008


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2002 Town and Country. Why does it have a rough idle, dies when stopping, has sluggish power, and sounds terrible?

Suspect throttle positioning sensor (TPS)...can be tested...need a meter set to read 5 volts DC...Tps is located on throttle has a three wire connector with wire colors: Brown/Orange...Dark Blue/Dark Green...And Pink/Yellow...Engine off...Push points of safety pins deep into into rear of in place connector PLUS METER LEAD on Brown/Orange wire and NEGATIVE METER LEAD into DarkBlue/DarkGreen...Set meter to read 5 volts...Start engine...At idle (Yes, I know it is running rough) then read meter...RECORD READING...Next rev engine to full throttle...RECORD READING...First reading must be .08 volts...Second must be 4.5 volts...If second reading is less than 3 volts...example 2.4volts TPS is culprit...Replace TPS...all readings OK? Let me know...saailer

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Why is my truck 2003 dodge dakota 4.7 v8 magnum running rough i dont know what else to do

Lets not change any more parts in the hope problem will be solved...Lets trouble shoot...Most probable cause is the Throttle Positioning Sensor (TPS)...It is located on the throttle body...Has three wire connector: Wire colors are Orange, Orange/Dark Blue, and Black/Light Blue...If you have a wee bit of experience with a volt meter here is test procedure...Leave TPS connector in place...Take two safety pins ...Push one into rear of connector into Orange/Dark Blue and other into Black/Light Blue...Set meter to read 5 volts...Clip + meter lead to Orange/ Dark Blue pin and - meter lead to Black/Light Blue...Start engine...Meter must read .08 volts at idle...Attempt to increase throttle as high as it will go...Meter must read at least 4 volts...If not TPS is the fault...Send results...saailer
* See picture of TPS


Aug 10, 2014 | Cars & Trucks

1 Answer

Color wiring diagram

with the 5.4 engine
violet/white--- tps reference
gray/white ------ tps 1 signal
orange/lt. blue -- tps signal return
gray/red ----- signal return
red/white ---- reference voltage

with a 6.0 diesel

tan--------ref. volts
yel/white- apps 1 signal
blk/org---- signal ret.
white/red- apps 3 signal
gray/blk--- apps 2 return
white------- apps 2 signal
blk/white-- aps2

hope this helps

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Check engine light on; cat codes read from machine?

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746d99a2-b003-45c3-8349-11fa4f7ef804.jpgCost $35.00

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High voltage to tps i replaced tps and engine computer still doing the same thing please help

Did you check the circuit where it comes out of the computer to see if it is too high ? Could be a short in the harness.
I think the gray is power and the dark blue is the signal back to the computer.

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P0123 Just put new Tps and it is showing this code now can adjust the TPS?

DTC P0123 - Throttle Position Sensor/Switch A Circuit High Input
This code means that the the car's computer has detected that the TPS (throttle position sensor) is reporting too high a voltage. Were codes deleted after this job? This is a code for TPS voltage high.

The sensor voltage should never be greater than 5volts. It normally reads .5 to .8 volts at idle (closed throttle). The orange and dark blue is the signal wire, black and light blue is the sensor ground, and the violet and white is the 5volt supply wire. You will need to back probe the signal wire to find the value. It is possible the signal or ground wires are open. Or the PCM is faulty.


Hope this helps (remember to rating this free answer).

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Hello! There are a couple of possible solutions...A current surge may have damaged one of the sensors...A multimeter is needed to perform a few test procedures...If you have a meter and a wee bit of experience using it we can test the suspected sensors...The Throttle Positioning Sensor (TPS) is bolted to the Throttle Body...It has a 3 wire connector...Wire colors are...Black...Gray...And Dark Blue...Using 2 safety pins, push the point into the rear of the in-place connector into the Dark Blue wire and into the Black wire...Set the meter to read 5 volts...Connect the +meter probe to the Dark Blue and the - probe to the Black...Start the engine...If you can get the engine to idle for a brief period the meter must read less then 1 volt (.85)...Slowly increase the throttle...The voltage must rise smoothly to 4 volts at full throttle (or as close as you can get)...Point is that the voltage must rise without jumping, jerking or acting erratically...Send a comment with results...If all is well with the TPS we'll move to the next suspect...Picture of TPS is below...Cost is around $50...Guru...saailer


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1 Answer

No power, backfiring thru the carborator. need to know what the problem is

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Dec 07, 2010 | 1984 Ford F 350

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