Code P0122, P0303, P1635 plz help

[Illegal-racer]

1996 Bonnevile SE. 3.8L non-supercharged Hi, i just got a few question and need some help located things. I just bought this car about a month ago for 500 bucks cuase it was crashed into a pole. ) just a bit of body work and a transmission pan, Which i have already fixed. Now here are my problems:P

Code P0122 =
( Throttle Position) sensor


Code P1635 =
5 Volt Reference Voltage Circuit condition,
- Ecm has detected a fault in the 5 volt reference voltage line
- Probable cause - Sensor using 5 volt reference line shorted to ground
- Circuit short to ground.
Im not sure if this could be why but,.... I installed my own stereo Deck, all the speakers, a 4 channle amp and 2 channle amp with 2 subs, I know My 4 channle amp has a bad grounding that i havn't fixed yet Seeming my drill broke:/ The bad grounding to that amp causes one of my speakers to do what is called car nosies, It makes the sound of the Motor/deck/ Anything really. Could this be at fault?

Code P0303 = FIXED by Replacing COIL
Cylinder Misfire detected-cylinder number 3
- The powertrain control module monitors the crankshaft speed and has detected a misfire condition.
- Probable cause - Ignition system fault-spark plugs, Ignition wires, coil
- Vacuum leak
- Injector fault
- High or low fuel pressure
I Just changed All the plugs AND wires, Im going to try and tell you a little about what the car does and doesn't do lol, so bare with me.

First off...... The car does indeed start Right up everytime,
AT idle It seems to be having a little trouble........ The rpms don't really drop or go up but, Its just like the car really just wants to gooo, Which is another thing i noticed, While im driving the car seems to just keep going even with my foot of the gas.. and i mean like up to 22 mphs which is faster then it should be goin without you're foot on the gas last time i checked.

It drives super smooth but,..... When i try to floor it, half the time it revs out like i just droped the clutch and kicked it into gear for the tires to spin and get a good amount of power going with a delay: I was thinking this has to do with a hose leaking air but,.. wasn't sure.

I can't really think of anything else atm Soo... I hope thats it.

Just speak you're mind on what you think, i will be listening and THANK YOU, I really hope someone can help me with this. Thanks again

[big white bufflo]

the throtle position sensor is located on the bottem of the throtel body witch is on the driver side the air box hose is attatch to it if you replacethe sensor that may fix your trouble or it was bumped in the impact see if you have some wires crushed going to the sensor because that is the referance voltage code trouble out of adjustment on the sensor will cause the high idlecondition

[Illegal-racer]

OH<!> Okay Thank you for the information, I will look at it in about 20 hours and Will post on what i find, Hope to speak to you soon. Thanks

[HotZ28]

It would help to post the year. The TPS is is located in a different position on the Series II engine. You could have several problems, but until we know the year, we can only speculate.

[Illegal-racer]

Originally Posted by HotZ28

It would help to post the year. The TPS is is located in a different position on the Series II engine. You could have several problems, but until we know the year, we can only speculate.

Good ideal.... I posted it up top. 1996 SE

[HotZ28]

With all the codes listed, you could have either a bad TPS, PCM, clogged cat, leaking vacuum lines, or trans modulator. Check the modulator vacuum line for trans fluid.

[Illegal-racer]

I said something here but, i changed mind:P i'll post back in a bit, i got a few days off to mess with the car Due to a foot injury

[Illegal-racer]

In terms of wiring everything looks good, There is one vacuum hoes that connects to the uhmm............... Intake senser on top, ( i forget the name lol ) Its got a 3 way split and it does lose air from there, Its right below and to the left of that.

Oh and the car doesn't leak anything but,... The car does kinda smell like fuel
Also no lose of tranny fluid.

[big white bufflo]

is it air or is it a vacume leak if it a vacume leak then that would explain the high idle

[Illegal-racer]

Originally Posted by big white bufflo

is it air or is it a vacume leak if it a vacume leak then that would explain the high idle

Vacume Leak.. Although It doesn't Always have high idle and I check all The ones that are fairly easy to find and see, Changed about 95% of everyone i found seeming they were all Cracked and what not but,... The car still at times Does it's high idle thing:<

I also Found out that My lights shut off......... let's see if i can try to explain.
This car has running lights. Which never turn off but,... When its night and i turn the headlights on/Parking lights/ Foglights, They will Just shut off While i am driving or while just siting at a light, I try to turn them back on and nothing...... MY dashboard Lights Also shut off, If i turn the car off then back on they come back on but, For the length in which they stay on seems to be random, Could be 10secs, Or 30 mins of driving, Any thoughts?

And Is there any way to check if My TPS needs to Be replaced? I took it off, On the inside it looks brand new It feels good also, The metal connectors look shiny and silver as well,

What are the odds Of a coil Pack only having fault to one Plug? I know this is a dumb question but,... I just want to be sure

[big white bufflo]

a indicator of bad tps is surging of idle if you sitting at a light does this car sometimes surge or if your driveing highway speed does it surge take a can of carb cleaner and spray all around your vac fitting if idle increases there is a leak as far as your light i have no idea there is a sensor some were for those the tps is a resistor it sends a referance voltage to the computer for more or less fuel they are around 30$ but they need ajustment after you remove them if you have a scanner it real ez but with out one there are three wire on them take a volt meter and put one to grnd then find the one that has less han 1 v that needs to be like .43 volts

[Illegal-racer]

Originally Posted by big white bufflo

a indicator of bad tps is surging of idle if you sitting at a light does this car sometimes surge or if your driveing highway speed does it surge take a can of carb cleaner and spray all around your vac fitting if idle increases there is a leak as far as your light i have no idea there is a sensor some were for those the tps is a resistor it sends a referance voltage to the computer for more or less fuel they are around 30$ but they need ajustment after you remove them if you have a scanner it real ez but with out one there are three wire on them take a volt meter and put one to grnd then find the one that has less than 1 v that needs to be like .43 volts

Well.... Sometimes while the car is at a still The idle does jump up to 2 pluz its even idled at 4k But, on avg the idle is about 950, although.. YES the Car does Surge, I hate wires lol

So to find if one of my connectors are bad for the Vac hoses, I can just spray Some carb cleaner on it?:" To find out if i need another one there? * IF * Idle jumps up?

[big white bufflo]

you have just answered your troubles replace the tps and that will take care of two of your codes 122,1635 then disconnect the batt to clear the codes and see what you come up with and yes carb cleaner will raise the idle a little if there is a vac leak in the last post i told you how to adjust the tps it hard to get to the screws but put them in and leave one lose and tighten the other a little just so you can move it around to adjust the volt .43

[Illegal-racer]

Okay. Thank You Very much for helping me " everyone " It will be about 6 days untill Next payday:"<> lol so I will get to replacein then.

After I do, I'll Post up and say wether or not it's goin good OR

Thank's Again.

[Illegal-racer]

Would a Bad TPS Cause The car to shut off? ....... :/ This has happen a few times, well about 4 or 5 times over 200miles of the car being drivin, Or Maybe a Wireing Harness problem?

It has only happen thoses few times while going below 20 mph. Seems to be A fuel Problem for Sure but, Im not sure, the Car is being Drivin Around bascily on E. Although just barley below the * Warning Low fuel * line, the check guages Light comes on to after it hits that line which is normal i belive:P Thats Really when the car becomes uhmm... Ify*

I know I could Give more detail but,... I've never been good at explaining things lol... So bare with me.


Ummmmm One More Thing that May Be Very Important, At idle If i Rev up to like 4.5k What ever the limiter is at....... Right As i let off the Gas, The exhaust Kind'a..... Sounds like its BackFireing, ummm.... like a recoil, I honestly don't know how to explain the sound, Can i upload a Sound File?

I was Just thinking about what HotZ28 Said, about a clogged cat < How would this affect the car?