I feel like a dunce

[Fish]

Ive been driving around with my SES light on forever. The last time I checked it, (bout 5 months ago. ) it was just for the EVAP. Well, I was bored yesterday in traffic so I switched my scanmaster to DTC mode and saw 2 new codes.

P0122
P0171

Along side its buddy P1441 which is EVAP.

So apparently the TPS sensor is bad, or the wiring I got from ZZP. Take your pick, and there is a lean condition. I also noticed that semi open header sound since I had the radio off when I touch the gas. Guess its time to take a lookse under the hood.

Click to read more...

 

[Turbocharged400sbc]

I feel like a dunce

short trip eh? :rollpicard:
likely it's the tps...the carbon track will develop a break at the bottom 1/2 of travel (where the contact sweeps the most often) and will cause a glitch/dropout.

get yer girl to chew lots o bubble gum to help daddy fix the exhaust leak

 

[Fish]

Know where I can find N* TPS sensors?

 

[Turbocharged400sbc]

Know where I can find N* TPS sensors?

iirc it's the same part number as the LS sensors...dirt cheap ya might want to pocket a couple from a u pull it. some parts places still have borg warner/wells sensors but it'd last longer to get a factory sensor.

it might be worth it for you/or a shop to hook up a DSO backprobed to the signal wire and cycle the throttle to check for the glitch/dropout before you spend the $ on the sensor unless you can borrow a sensor...

 

[Fish]

iirc it's the same part number as the LS sensors...dirt cheap ya might want to pocket a couple from a u pull it. some parts places still have borg warner/wells sensors but it'd last longer to get a factory sensor.

it might be worth it for you/or a shop to hook up a DSO backprobed to the signal wire and cycle the throttle to check for the glitch/dropout before you spend the $ on the sensor unless you can borrow a sensor...

Ill have to give Justin at Caspers a jingle and see if they have the equipment to test the sensors.

 

[Turbocharged400sbc]

Ill have to give Justin at Caspers a jingle and see if they have the equipment to test the sensors.

any shop with a snapon vantage or any other digital storage occiliscope should be able to capture any possible glitches.

btw i looked and i cant find my manual but what are the dtc descriptions?

 

[Fish]

P0122 Throttle/Pedal Position Sensor/Switch A Circuit Low Input

P0171 System too Lean (Bank 1)

P1441 Evaporative System Flow During Non-Purge

 

[syP]

your car will run mid 13s now

 

[Turbocharged400sbc]

P0122 Throttle/Pedal Position Sensor/Switch A Circuit Low Input

yup sounds like a big droput for the pcm to actually detect it...if you scan tps and slowly open/close the throttle linkage you may actually see the dropout if it's bad enough for the pcm to see it, also check that none of the terminals backed/or were pushed out of the connector nose. if it's a ground issue it'd show as a high input error, so also check for the 5v reference at the tps and the map

P0171 System too Lean (Bank 1)

likely the ex leak or a missfire

P1441 Evaporative System Flow During Non-Purge

take off the purge solenoid and tap the openings onto a white piece of paper and look for small chunks of carbon from the charcoal cannister use a 9v battery to open it and allow you to jar loos anything in the valve seat...if you see em take a small cheap lawn mower fuel filter and put it inline with the cannister to purge solenoid line to have it filter/trap the granules before they can trap the solenoid open...3$ filter is alot cheaper than new lines and cannister that a dealer would want you to install....

 

[Fish]

your car will run mid 13s now

Dont know about that, but Im sure it will act a bit more normal.

 

[Alacran]

Hey Fish i am going to the bone yard this weekend what year caddy is it?

 

[Fish]

Im sure its a 2000+ N* TB. I appreciate it.

 

[Angus]

tcg pullin through

 

[Alacran]

Im sure its a 2000+ N* TB. I appreciate it.

Alright any pictures just for good measure. I will check the websites.

 

[M@]

my heap needs a new TPS too...it's needed one for years, I've just dealt with the consequences because I'm too cheap.

Mostly just idle speed goofiness, but occasionally it fucked with the shifting. I just acknowledged that the car was a POS and ran with it.

 

[Alacran]

Im sure its a 2000+ N* TB. I appreciate it.

I went to three boneyards and i only found one 2000+ N* TB but it was missing the sensors. Sorry man.

I almost pulled it off thinking i may use it someday but I was hoping to find a complete one later on.

What else does that sensor go on?

 

[phat_ridegt]

you ever priced a tps for those damn things? i might have one at the shop, you can have it if i can find it.....

wait a min...i was thinking of the iac.....those bastards are like 500 bucks, and they look just like the 3800's, just a tad larger lol

 

[Fish]

my heap needs a new TPS too...it's needed one for years, I've just dealt with the consequences because I'm too cheap.

Mostly just idle speed goofiness, but occasionally it fucked with the shifting. I just acknowledged that the car was a POS and ran with it.

The trans reason is why I want to swap it. First gear revs up to about 4500 under light throttle. Also seems to want to wait a second to get moving from a stop as well.

 

[DanJ]

Is it stamped 23852 and E1390E? I have a brand new Northstar TB in my hands with brand new sensors but i believe it may go on the car.

 

[M@]

LS1 and Northstars share a common TPS as far as I know...so most chevy/GM trucks also have the same sensors...possibly others.

 

[Alacran]

you ever priced a tps for those damn things? i might have one at the shop, you can have it if i can find it.....

wait a min...i was thinking of the iac.....those bastards are like 500 bucks, and they look just like the 3800's, just a tad larger lol

Rockauto has Delphi TPS for under $30.

 

[Fish]

I believe I tracked the exhaust leak to the crossover. Not totally sure though.

 

[DanJ]

SLP's? where the crossover clamps to the rear header where it's a pain in the ass to get any tools back there?

 

[Fish]

Stock manifolds.