ford ranger 1990 4.0l

[alonsito0114]

I been having problems with my idle and my check engine light came on it show me code 53&63 any sugestions need help has a new tps

 

[RonD]

Either wires or computer if TPS has been replaced.

TPS(throttle position sensor) is just a variable resistor, like a light dimmer or Volume control, so easy under stand how it works.

Computer sends TPS 5volts on the top wire, TPS sends back lower voltage on center wire.
Lower wire is a Ground.

When throttle is closed center wire should read .7 to .9 volts, when throttle is wide open then center wire should read 4.5-4.8volts, so as throttle opens voltage on center wire goes up.
Just like turning a light dimmer increase voltage to the light bulb.

Computer has a 5 volt power supply, it can fail, code 63 "Throttle Position Sensor (TPS) signal too low"
Or wire can get corroded, lowing voltage.

Power supply can fail with higher voltage, so it has 6volts instead of 5volts, then you could get code 53 "Throttle Position sensor too high"
Or wire could be shorted to a 12v wire.

Could even just be a misadjusted TPS.

Use a volt meter set to DC volts
Use sewing pins to pierce top and center wires so you can test voltage
Turn on key
Put meter's black probe on a Ground
Touch Red probe to top wire pin, should read 5volts(4.7-5.0v), if it doesn't then you found the problem, this voltage is the Reference voltage, so no need to test anything else if this is wrong.

If you have 5volts then test center wire, should read .7 to .9volts(under 1volt), if it is higher or lower loosen the TPS screws and turn sensor.
If it won't get to the proper range look at the throttle linkage, you will see a screw, it "looks like an idle screw", it isn't, it is to adjust TPS and prevent dieseling(run on).
Adjust the screw to get proper closed throttle voltage on TPS.
Now slowly open TPS and watch center wire voltage, it should go up steadily, no jumping around, at wide open throttle you should see above 4.5volts.

 

[alonsito0114]

Well thanks and the truck has a new engine when the mechanic start it it was idling to high. So he start messing with the screw on the throttle body but it wasn't the one of the gaskets on the manifold was pinch so I replace it

 

[alonsito0114]

Ando now is showing code 53&63

 

[RonD]

Then you need to get a volt meter and readjust that screw yourself.

Mechanic should have known better, fuel injected engines do not have idle screws

 

[alonsito0114]

Thank you do u know how to adjust the screew or what volts should be at

 

[RonD]

It is at the end of my first post above.

Could even just be a misadjusted TPS.

Use a volt meter set to DC volts
Use sewing pins to pierce top and center wires so you can test voltage
Turn on key
Put meter's black probe on a Ground
Touch Red probe to top wire pin, should read 5volts(4.7-5.0v), if it doesn't then you found the problem, this voltage is the Reference voltage, so no need to test anything else if this is wrong.

If you have 5volts then test center wire, should read .7 to .9volts(under 1volt), if it is higher or lower loosen the TPS screws and turn sensor.
If it won't get to the proper range look at the throttle linkage, you will see a screw, it "looks like an idle screw", it isn't, it is to adjust TPS and prevent dieseling(run on).
Adjust the screw to get proper closed throttle voltage on TPS.
Now slowly open TPS and watch center wire voltage, it should go up steadily, no jumping around, at wide open throttle you should see above 4.5volts.

 

[alonsito0114]

Thank you ROND I CHECK THE WIRES WITH THE VOLT METER AND THE RED ONE READS 5.03 AND THE MIDDLE IS GREEN AND READS .889 IT LOOKS OK I GUESS ANY OTHER SUGGESTIONS ?

 

[alonsito0114]

Well yesterday i took my truck to the auto parts to scan it again and keeps showing code 53&63 but also code 41 system lean-fuel control? Helppp plz

 

[alonsito0114]

Oh but when it had the air leak on the manifoild never show a check engine light until the leak got fix
Im going crazy with my truck

 

[RonD]

TPS throttle closed voltage(.88v) reads OK, did wide open read OK as well?

Did they reset/clear the computer after the read?

If so, has the CEL come back on?


You can reset computer by unhooking the battery for 5 minutes, then reconnecting it.

 

[alonsito0114]

TPS throttle closed voltage(.88v) reads OK, did wide open read OK as well?

Did they reset/clear the computer after the read?

If so, has the CEL come back on?


You can reset computer by unhooking the battery for 5 minutes, then reconnecting it.

I did check it starts from .889 to 3.20 and
shows 0.L and jump to 3.30 and all the way to 4.65
Im try slowly but every time between 3.20 and 3.33 shows 0.L and the keeps going up until hits 4.65

 

[RonD]

I did check it starts from .889 to 3.20 and
shows 0.L and jump to 3.30 and all the way to 4.65
Im try slowly but every time between 3.20 and 3.33 shows 0.L and the keeps going up until hits 4.65

Voltage should be smooth increase from .88 to 4.65 and then smooth and steady decrease, jumping or dropping means bad "light dimmer", lol, that is all it is, a light dimmer circuit.

So new TPS must be bad, new no longer means "it works", new now means "never tested", or......"we made it, now you test it"
Because it is an electrical device it may not have a warranty, but I would still try to get an exchange, if you can't then don't get that brand again, hitting wrecking yard would be better, TPS is not a common failure.

 

[alonsito0114]

Thank you for you help i hope the work i will buy a new one this friday and i will let u know i try like 5 times an everytime did the 0.L whatever that means but it was everytime so thanks

And do u know about code 41 system lean fuel control?

 

[alonsito0114]

Any body knows where can i find a inside door handle trim ? Cant find any where