+Ozzstar He cant say anything it his shop. Good old big al!

I think they just chaff him. He wouldn't be asked for help if the guys wouldn't appreciate his help.

I'm tryna figure out on my 95 cutless ciera why does it shut off while driving

+Сергей Клепицкий Да, Verus -это вещь. Новый стоит около 10 тыс. долларов. Я взял б-у за 1 тыс...пока нареканий нет. Он уже давно себя окупил :) Бывает, что катушка пробивает изоляцию снизу, и искра возвращается через сам корпус...отказывает только один цилиндр!

+DJDevon3 Great question. The way they checked for spark was with that strobe timing light, which was actually flashing on every plug wire (including the dead ones!) because it was picking up the pulses from the neighboring ones!! I assumed they used an inline spark tester...bad assumption on my part. I was honestly surprised it ran at all on only two cylinders!! A crank sensor issue can be ruled out since one coil is firing great, so the input to the module can be assumed to be correct.

+Maic Salazar This system is kind of goofy...the crank reluctor ring is inside the crankcase right on the crankshaft! It would have been interesting to scope the crank waveform coming from the module to the ECM though :)

+Toyota Tech Oh Big Al is a character alright! I've learned quite a few things from him over the years, like how to Mig weld and use a torch. He's a nice guy as long as you agree that he's always 100% right about everything HAHA

Absolutely! For electrical stuff, ScannerDanner is a very good one :) Ivan (MotoYam82; as in this guy) also has several good vids on that subject, but for pure electrical diagnostics, ScannerDanner is a good choice! Excellent teacher. I would also highly recommend the channel SouthMainAuto with Eric O. (These guys are all freinds btw ;) ) They are all excellent, I watch them all the time and learn tons of stuff, especially when it comes to electrical. Schrodingers Box is another one I watch quite a lot, very insightful, and also a good teacher when it comes to understanding how the different things work, and how to diagnose! (If you can tolerate his, uhm, "confident behaviour" - it's worth it though ;) )

It was the ecu plug by the way every time you close the door it would move it make it cut in and out Dame cars lol

He simply connected the lead of the test light to B- to test for power at the coil inputs from the module KOEO, then moved the test light lead to B+ to test for coil triggers, at the module, KOEC. The ign. mod pulses the ground to the coil, thus the flashing light. If you have an easily accessible coil on ign module car, you could do this across the 2 coil pins ( coils removed) once you know you have keyed power from the module, with your high impedance test light or a rigged up NOID light.

+Richard Gill lol Just random internet knowledge! Didn't they also put them into those boxy little US mail trucks that seem to have an unlimited lifespan?

motoYam82 yes they did. Where can I get a deal on some new test leads with banana style plugs?

All my scope leads came with the Verus, plus some BNC extensions with banana adapters from AESWave. You can order custom lengths, colors, and connectors...the quality can't be beat!

Ivan. Have you ever seen a 2007 Chevrolet silverado with hard transmission shifts from first to second. The Chevrolet dealer told my customer that the fuel pump was the problem. Pressure is over 90 psi and vehicle is in fail safe mode. I got to make a call on it tomorrow

Can't say that I've ever seen that before...How the heck is the fuel pump tied in to the tranny controls? Any DTCs? Try a Google search :) Good luck!

I was incorrect.....I thought I heard Ivan say it was a single coil system....I am a sorry.

+roadkill5333 it's a single cylinder misfire I tell ya! On a waste spark system? Unlikely. :P

+roadkill5333 Definitely a 2-cylinder misfire. Maybe Big Al got confused by his strobe light which was picking up the neighboring plug wire?

motoYam82 You can't only use a timing light for a misfire. It's not a bad idea as a quick check but if you get used to that bad habit it will bite you eventually, case in point.

De nada, Martin!

+FDSeoul San Diego Same thing happens to ScannerDanner when he does mobile videos sometimes. Most of the time the shops he helps are respectful enough of ScannerDanners knowledge to be quiet and pay attention so they can learn something too. Ivan hasn't earned their respect yet is all, Ivan was obviously the young buck in that shop. I'm sure this victory for him just earned their respect. More great diagnostics like this will help him get the word out eventually.

+FDSeoul San Diego Yup had to put the "raw and uncut" disclaimer in there...as you can tell Big Al had it figured out himself already :)

+DJDevon3 Great Point, Plus Paul does a great job at pausing his work and filtering the yappers in the BG. You can see how Paul's editing is done to see where he obviously paused and edited the idiots out.

FDSeoul San Diego If he edited them out completely the video would only be 2 mins and missing a lot of great diagnostic info. :/ Those guys don't realize how hungry people are on youtube for great auto repair videos. :P

+DJDevon3 You notice that both of the Eric from ETCG and South Main make the necessary edit to keep out the cussing and yapper from their vids. One of the viewer brought up a great point about how they watch the videos with their children as entertainment and education and the last thing they want is the hear cussing in their vids while trying to learn and teach their sons and daughters. I think a little effort goes a long ways. Just my own opinion.

+Richard Gill Wow interesting...I would definitely track down the cause of the rich condition first. Would have to look at some fuel pressure specs; 90 psi seems very high. Returnless system?

motoYam82 yes Ivan. Returnless. Did I mention that it shifts fine when the stability light goes off.

+Richard Gill Richard that sounds like a fantastic diagnostics opportunity! Chevy trucks make for some great case studies huh?

What do you think about vehicle being in limp mode or fail safe where it raises the Trans line pressure

Ok today fuel pressure was taken at the rail confirmed its at 90 psi. Fuel pressure sensor read 2.8 volts. Where it should of read 5 volts with the actual present reading. So I went to schepel GMC and purchased a new fp sensor for 42 pesos. Big improvement. But Ivan once the stability light comes on hard 1-2 shift again. Light goes off for an hour then on. Keep you posted. New code after fp sensor replacement po69e. And po191. Original codes were po172 and po175. Po175 diminished .