GM 3100 Intermittent Stalling
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- เผยแพร่เมื่อ 23 ก.ค. 2012
- GM 3100 Intermittent Stalling
Disclaimer:
This video is not meant to be a definitive how to.Always consult a professional repair manual before starting your repair.I am not responsible for any problems that you might incur by watching or following this video.Follow at your own risk. - ยานยนต์และพาหนะ
Rich,
The 3 wire connector is the crank position sensor AKA "CKP" in schematics. On all 3.1/3100 engines; this sensor picks up the crank timing and provides it to the Ignition module for base timing. The ignition module then generates a CRANK POS (CPS) signal to send to the ECM for injector pulse timing. Since you lost the crank timing reference to the ignition module; it would not trip codes as it thinks the engine stalled out (mechanically). I only know this as i used to hack GM ECM's!
I have learned a new phrase "the wiggle test". I'm so gonna use that. You can see why reverse brought out the issue. Plenty of movement from the load on those old mounts. I bet this customer was thrilled with this repair.
I sure like the way you show diagnostic effort rather than just straight part replacement. Good work.
This is s good reminder to check the electrical connections and those seals as you never know who did what to a car before..
Excellent tip Rich, Thank-you!
Richpin you are a freaking magician!
Pretty obvious when shifted into reverse the engine rocks forward. That is likely what caused the loose connection to break the electrical power. Thanks for the awesome video! This clearly demonstrates how we techs must think about all aspects of operation in order to understand a problem like this.
Nice repair Mr Rich, it can some times be a proper pain to isolate a problem like that.
Great diagnosis
Good job Rich. Love your videos.......
Thank you.
Important Update: Jan 2013 there will be a new richpin channel for all future videos.Richpin06a channel will be solely for all the Saturn lovers out there.Should be a lot of fun so stay tuned.
Nice video Rich!
My old Mechanic would put a couple drops of super glue these connections and say ." I will see you the next time you have a real problem your good".
richpin..... the most famous hands on TH-cam
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thank you
Awesome video thanks for sharing
Good job. My first thought was something with the idle controller (often won't show a code in my limited experiences). But seeing the way the engine twists when put into R, it sure looks like you found the problem.
Yes if the contacts look good.
nice one rich
O he was very happy to say the least.
great good diagnosis i work r&r trans shop
Nice job
Yes i changed the plug.Went to the junk yard and got one there.
Methodical and simple!
As soon as you mentioned the car, I had a feeling that's what it was. Chevy's had that problem. I had an 86 Buick with that 4Tech engine with the REALLY bad pulley design. If it got any water on the engine, you might as well forget going anywhere until it dried out.
Great video as always! I was wondering if you took requests for how to videos ?
Obviously, when the transmission is placed into reverse, it moved forward, likely causing the connector to come loose. I'll bet when the a/c compressor kicks on the engine moves slightly too, causing the connection to fail. Great job, wish I could find a competent mechanic like you closer to me.
i was wondering if you could make a video on how to adjust the body panels on a saturn , a Vue specifically but any saturn would do. The panels on my Vue could use some adjusting to line things up and Im unsure how to proceed
good one
Got a Pontiac Grand Am with a 3400 that dose the same thing and since these are the same family of engines I’m curious if you got any answers for me cause mine dose it when ever. It could go almost a whole year then randomly stalls going 110 kilometres on the highway or 50 kilometres in the city dosnt matter if the engines hot or cold dosnt matter of its hot or cold outside. I’ve changed the IAC TPS IAT MAP and MAF still no change. I’ve cleaned the throttle body and IAC value still no change. I replace all relays in the fuse box even got a new battery cleaned the terminals good and put them on nice and tight put fuel cleaner in my tank changed the alternator spark plugs wires and coil pack even replaced the air filter thinking there might be air restrictions and I did the same to the fuel filter. Like I’m out of ideas now and too much money in next I’m thinking crankshaft sensors which there are two on this car and maybe camshaft sensor.
Good catch. I still can't figure out how or why the weather seal went missing unless someone else was in there and took it out for some reason.
Well done !! Why did it not through a code? Do you think it should have ?
Hi! Richpin06. Did you chenge the plug??? If so where did you buy the new one? Thanks
I would like to see how you manage to solder in tight spaces.
That has always been a challenge for me.
I would like to know why it did not set a code.
does it need a transmission support??
could u just replace the rubber seal ? in the case that you dont have a sodering gun?
Man if only I could hire you to look at my 3.1 in my 91 camaro. Runs like a dog and stalls when hot, replaced every sensor I could find including a complete fuel system and distributor.
Did you figure it out?
If for some reason the connector is not attached to the knock sensor (front above the oil filter) the same issues will result and the engine light will be on. Ask me how I know! Engine will run funny, lack power, shifting is odd and mileage goes down the tubes. Have fun finding a OBDI code scanner.
Hey rich. How about a tune-up video?
I have 1094 chevy corsica v6 want to change coil pack do i need to do an idle learn procedure? Because the manuals says so but others day no. Thanks
That engine seems to have excessive movement when you put it into reverse at about 4:25. If that is normal, you can see how wiggling the wire and placing the car in reverse caused the intermittent.
I have a 95 olds 3.1 running rough.. replaced..fuel pump filter plugs and wires has new battery and alternator and new fuel pressure regulator..any other suggestions
Check your oil for milkiness. Those old 3100s are known for their cheap, plastic head gaskets falling apart and letting coolant into the heads
i have a 1994 pontiac grand prix se 3.1 dies when driving. when it starts to die it starts to miss and the rpm gauge starts jumping and then it dies but it always starts right back up i changed the crank shaft sensor in it and it runs great till in starts to die ......what could it be.i also put a new fuel pump on it
Eddie Mccomas, Hey Eddie did you ever figure out the problem. My 03 Malibu 3.1 engine is doing the exact same thing
Sounds like A Vacuum leak.
I sure do.....hit me.
I with I saw this before. I sold my 97 Malibu
Peter Griffins Garage ....
Lol
Yes indeed..lol
Nothing like old school thinking to solve a problem. Dealer would have just plugged it into a computer and not be able to duplicate the problem. Sorry that will be $200.00... great job..
Why would you cut it off instead of pulling the rubber out of the back of that plug the orange piece of rubber you pull that out and get a really small pick or really small flat-head and push it the next to the metal prong and pull the wire and radar that plastic connector and do the same with the other one and then switch them out you don't cut your wiring harness it comes apart reply to go to came right off the terminals and you could have changed the plastic and cleaned up the terminals with wire brush
No me prende mi Century Buick
That engine sounds horrible
thank you
thank you