Tps/pedal travel sensor voltages

T

Tickford220

Member
Does anyone know the pedal travel sensor voltages at idle and full throttle?
On the accelerator pedal.
Ch wagon 4g69
I’ll try check it before I remove the old sensor and fit the new one but I’m not even sure it will be set correctly.
Cheers
 
Have a look at this thread

Strange idle problem

So i’ve had this issue since i bought my 2.4L lancer since november of 2022 so i thought i’d ask about it now. If anyone else has experienced this please let me know what you did to fix it So the issue is that when the engine is at operating temp, and at idle it randomly will fluctuate, drops...
auslancer.com auslancer.com
 
There are 2 position sensors (main and sub) in the one throttle position sensor side plate that are compared to each other and must agree with each other (after some maths). I made this pic for some morons to understand why you can't bolt a 4G69 throttle directly onto a 4B1x engine and expect it to work....
4g69 throttle sensor.png
 
Thats a good diagram,im guessing the pedal sensor voltages would be the same/similar then.
Im hoping when i get the new pedal sensor there isnt any adjustment once its on,if there is at least i have some voltages to work from now.
Ive adjusted tps voltages on efi windsor v8s,this cant be much different.
cheers
 
The TPS sensor(s) are not adjustable and are part of the throttlebody side plate. They generally don't go faulty unless water gets in through cracks and rots the whole thing out. The pedal sensor is a simple potentiometer with ground on one side, 5V on the other and the sensing wire in the middle so it can theoretically read from 0~5V with the ign ON but it is normal for foot off idle to be around 0.5~0.9V and foot flat to be somewhere over 4V. You can test it unpowered by measuring the resistance between each connection to see if there is a nice smooth increase between the grounded connection and center connection as the foot gets planted.
 
Well i have a new throttle body,new pedal sensor and i still have the dead pedal sometimes..... tuning it isnt the fix because i have had it tuned,ive done everything ive been advised to do and no joy,apart from that the car drives great...
I guess ive debunked the myth that the wagon issue with the factory tune and intermittent dead pedal issue is fixable by tuning,i can confirm it isnt fixable by tuning.
The tuner had never heard of this common problem?
The only difference between the wagon and sedan tune that he saw was to do with egr control from memory,afaik he went above and beyond to sort it,very helpful guy.
 
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I would buy a scanner but they are over $300 and im not keen to find out there are no codes possibly and be stuck with a $300 paperweight that can only be used on my lancer and then have to also pay for updates as well.
if anyone has any ideas id love to hear them,this has cost me a decent amount of $$$ to get nowhere in trying to solve this issue.
 
Elm327 knockoffs cost a few dollars and can read and clear errors no probs.
Your process of diagnosing and eliminating the original fault is flawed but you are not the only one that throws parts at a fault - plenty of supposedly qualified mechanics do exactly the same!
 
jajk said:
Elm327 knockoffs cost a few dollars and can read and clear errors no probs.
Your process of diagnosing and eliminating the original fault is flawed but you are not the only one that throws parts at a fault - plenty of supposedly qualified mechanics do exactly the same!
Click to expand...
Every single thing i did to diagnose my supposedly common issue apart from replacing the throttle body was all done on advice i took from members on this forum and you have the cheek to say my diagnosing skills are flawed,thats a handball of dodgy advice if ive ever heard one....
What you are actually saying is the advice/help i took was flawed,is that right?
The reason i joined this forum was because i know sweet fa about lancers,my only mistake was listening to bad advice,then being told its my fault.
Im not even saying it was bad/incorrect advice,i proved it was by taking said advice and having the problem still not being sorted.
Thats totally fine,taking forum advice is a hit and miss,having you say that i *fudge*ed up is just bullshit....
 
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