2001 GMC Sonoma 2.2, TPS Troubleshooting
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- Опубліковано 28 бер 2017
- Join me in troubleshooting this GMC Sonoma, where we tackle a P0122 fault code! The testing procedures we used can also be applied to Chevrolet S10 trucks of similar model years. We cover fundamental potentiometer testing techniques and using scan data as well as a scope to identify signal glitches in these sensors. If you have any other questions regarding testing potentiometers, or any 3 wires sensor, please leave your question in the comments. Thanks for watching!!!
I like the way that you explain things. I've heard this stuff many times and even read it in Paul's book. Still, you have said some things that make it even clearer. Thanks!
You and Scotty Kilmer are right on. Wish I could find a good mechanic,keep it up
Nice video Joe...quick diagnosis & repair.
Great video, very helpful! I'll be doing this test very soon with my fluke meter.
Excellent video presentation!
My son had a problem with his Sonoma 2.2ltr. It was lacking power, jerking, sputtering and sometimes would shut off. We took it to 3 different shops and spent over $3,000. The last thing we did was change the Coil Packs out. He bought the Duralast and it worked fine for about 3 weeks. The same symptoms starting again. The fourth and final shop actually said it was his Coil Packs again. Come to find out, when changing the coil packs on the Sonoma, they require factory coil packs.
Note: This is all we done to it beforehand. Issue:
1. Jerking while driving
2. Backfires
3. Only does these when warms up
4. Lack of power
Possible fixes:
1. Throttle Position sensor
2. Idle air control valve (iac valve): easy fix. Just take off of the throttle body and clean with carb cleaner. While spraying, make sure electrical part is held up. If not, spray will ruin the part.
Fixed:
1. Fuel filter
2. Air filter
3. Oil Change
4. Had wrong spark plugs & wires. Replaced with correct.
5. Cleaned Throttle Body
6. O2 Sensors
7. Catalytic converter
Onboard computer diagnostics show:
1. O2 Sensor
2. Code 0420- evaporative in mission system monitor #1(.040Leak
Problem Solved:
Replaced GMC Coil Packs.
Do not use aftermarket because they only last between 1-3 months.
🐝💲💲👣🔍🇨🇦 Very thorough, instructive, knowledgeable analysis, plus reasonable quality videography, GOOD JOB.
FWIW, I'm just about to get a third TPS sensor and it's never set a code, just started acting oddly on very light throttle with the engine dropping out for the first one, and this second one seemed to lose everything above 15% throttle for a single run cycle (possible I started the truck with it on a dead spot) but 'came back' after I stalled it. It's very possible for these sensors to wear out and give bad data but still remain within the acceptable voltage and not throw any codes. The first one I took apart and the carbon track was nearly worn through around the 10-20% throttle area, but not completely. Haven't gotten the second one out yet, that weirdness just happened today.
"subject" is a 2003 GMC Sonoma SL 5 speed with ~330,000 miles. First sensor died somewhere around 200K, if I recall correctly. This one may be wearing down into the idle/0% area as it's hanging the high idle up sometimes coming to a stop, no vacuum leaks to be found... just leaving it at 1500rpm.
Great videos ,
nice video thanks
Very good video. This would make a fun drinking game. Every time he says the word “Guy’s” we take a shot. I’m sure we would all be passed out by now, lol.
I'am Your Newest Subscriber Great Videos
great video ... is the green cap to the left of the TPS were you check fuel pressure ?
Excellent for a non-mechanic like me. I always want to understand what I'm paying for.
great video. thanks for sharing. Curious on what you found with the p0410? bad air pump? I remember a tsb on an updated air pump suction side hose due to water intrusion into the pump. Is there diverter valve on these models? videos getting better and better everyday!
Hey there! I'll be uploading the video addressing this P0410 fault code tonight, so all of your questions should be answered :). Thanks for watching!
Good video! Great detail and explanation. Do you use any other scan tools/scopes other than Snap-On?
All I currently own is a Snap-On Verus, so it is my go too scan tool currently. I have my eye on an Autel Maxisys, as I think it's capabilities would fill gaps the Verus doesn't cover quite well. Thanks for watching!
Muy buen video buy bien explicado 👍
Me puedes resumir en español porf,creo q tengo ese problema,otro no comprendo bien el inglés.
My intake rubber boot riped JUST Like THAT 21 minutes into video as You are replacing the TPS. What is that part name...I need to replace that rubber boot. THANKS !
Wammm bammm thank you mammmm...
Hello on the grey wire mine goes up in voltage 5.06 to 5.10 is that normal or should I check the wire?
What were the symptoms that customer had on this vehicle besides a code.tks
Lol, he said the guy had NO drivability issues. Just a CE Light.
SMH it’s a 20-year-old, $900 truck😂 just friggen drive it!
Yeah guys..
Hey I know it's been a while but on my 2000 S10 2.2L I'm getting a P1621 code. Does this really mean my PCM is going bad? The truck still starts and runs fine. Thanks.
DRIVE IT !!!!
Where is you sensor map
What scan tool is that
awesome video. I was wondering if you could help me real quick since you were right where I had a question about.
In that bundle just left of the sensor there was a tiny plastic hose I found broken (or broke lol) on my 98 2.2L. It goes to the top of the throttle body and back to some large metal hardline. It is like 1/16 to 1/8 in plastic line. You know what that is for and if it may explain a loss of power on highway hills?
thanks in advance
After hundreds of pictures and searches I believe I found it to be the FPR vacuum line. Apparently that would only allow excessive fuel pressure and other symptoms to appear.
I have this same truck and it died out at a 🛑 the other day with a crank no start no spark check engine light on new battery new fuel filter half a tank of gas and good fuel pump fluids are fine good starter still churps fuses look good clean map sensor changed a couple of sensors recently doesn't burn oil or over heat plugs looked ok but I don't have a multi meter can't afford one & no one I know has one and my knowledge and experience with cars is really limited to the basics truck was running a little rough just had a transmission put in recently been watching YT videos trying to find something but everyone tells me that it's something different in each video that I seen with the same symptoms and the only codes that we got from the odb2 was a po141 & a po130..has fuel to the shradder valve and plenty of compression dashboard lights up with key on but won't turn over doesn't sound like a bad timing chain the engine was replaced with a rebuilt one along with coil pack thermostat plugs wires and fuel pump fan and fan clutch 2 yrs ago and it hasn't really been used much in the past 2 years but it was running good except for the recent rough idle before it cut off... every video I saw they said that it could be anything from a bad wire /ground to about a dozen different sensors cam crank tps to the timing to something in the ignition system to a bad egr purge valve fuel pressure regulator i tried a test light but it didn't light up maybe broke,YT came up with about 20+ different things that could cause these same symptoms that I'm having mechanics are to expensive at this point and the people at the parts store were no help either,out of work $ is tight and need my truck to get back on track...any ideas would be greatly appreciated stuck in a small town in so IL with little to no transportation please help any additional information or advise would be sweet... can't really afford to load up the parts cannon and hope it works if you know what I mean... thanks a bunch...
Is there a 2nd (+) on this truck
Plz let me know asap
GMC Sonoma the cousin of the CHEVY S10👍
More like an identical twin !
The cousin would be a 4.3 Silverado
W
Well I'll be a Sonoma B@tch! I had a 2002 Sonoma 5 speed manual no codes with only an incomplete Secondary Air monitor and no pending codes. Customer's complaint is idles too fast.Drove it and I verified a slow to return to normal idle after decelerating and coming to a stop. No vacuum leaks or high fuel trims. I did the throttle sweep from the engine compartment and couldn't verify any issue with TP drop out (except for the 2 roll limit at Wally mart) , but when doing TP sensor sweep from inside the cabin the TP sensor intermittently would not return to as low a voltage as when I started. WTF , I look down and see the heavy stiff carpeted aftermarket floor mat is over , the very bottom inch of the accelerator pedal. I pull the floor mat up and reposition underneath, problem fixed. Lessen learned, I think I want to be Captain Obvious before becoming The Professor :-))
As an electronics guy, I have to take issue with your explanation of a potentiometer here. It's not a 'lever' sweeping over a 'variable resistance'. While from an understanding point of view there may be no practical difference (which is not guaranteed in all applications and that's why I'm making this reply), this is objectively wrong.
Inside this sensor is a track made from a resistive material (carbon, ceramic or metallic) which has a known resistance per unit of lenght. Its resistance value is fixed at the ends (not variable) and, in this application, the ends are tied in to a 5V reference and ground respectively.
The 'wiper' (correct terminology for the lever moving across the fixed resistance) is tied to the signal output and, in this case, serves as a variable voltage divider (think of it as two resistors in series with a variable mid point) between the 5V reference and ground.
The clever bit about this design is it's only supposed to show the center part of the sweep between 0.5V and 4.5V, allowing the engine computer to determine open an shorted conditions.
A lot of good information here. I will agree that my terminology in reference to the "lever" versus a "wiper" was incorrect during my brief explanation of how this sensor operates. In response to my use of the "variable resistance" term during my explanation of sensor operation, it may be objectively incorrect in terms of an engineering standpoint, but is still applicable when analyzing the rough operating characteristics of this sensor. Though the carbon track is in essence a single resistor of fixed resistance, the resistance of said material is variable depending upon the signal circuit's position upon it's surface. My focus during this video was not to cover sensor design and operation in any sort of specificity, but simply to show troubleshooting techniques used to condemn a potentiometer like this one. Thanks for commenting and the good information you provided.
@@pinpointautomotiverepair1592 As you point out; focus is the issue here. Thanks.
4.3 yr2000 Sonoma no heater
Well so far no body has had a answer for me about why I don't have power to just the crank sensor. Everything else has power
X chevrolet s10 motor 2200 FALLA DE CONBUSTIBLE
Tengo problema con el idiomasoy latino
Needs some water 💦