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Showing content with the highest reputation on 10/04/2018 in all areas
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For some reason the Batmobile doesn't want to start. So Robin checks the car and tells Batman that the BATTERY has died, on which Batman replies: "What the hell is a TERY ??"2 points
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Wonderfully explained with a lot of patience @Barry, here a majority of the mechanic either work with their gut feeling or with overconfidence without relying on the Diagnostic tool lying and eating dust on their workbench. I have encountered the similar scenario when two mechanic challenged each other for my Pajero slight missing and doof doof noise is due to some adjustment/tune-up and wasted my 4 hours. Later on, one newbie mechanic walks in and ask those two experts that what fault code you found in DTC system and they have realized that they should have checked the DTC codes first. After the full diagnosis, they haven't found any fault code as the actual issue was a mechanical issue of slightly bent valves, which later on you fixed it in 2016. So moral of the story is relying on science and automation is always helpful, than shooting in dark.2 points
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Most of you know that I’m not really doing much mechanic work now but I still like to keep a finger in (fnarrr) and do bits and pieces. I’ll try to post more stuff like this when I’m doing car work but it won’t be a regular feature. This is the easy way to find a leak in an air suspension system without getting your hands dirty. The first thing you need is some diagnostic software and a bit of basic knowledge how to use it outside of just scanning and clearing DTCs. This method should be possible with all modern diagnostic software excluding cheap code readers etc. You need to enter the suspension system, read the codes and make a note of them then clear them. Clearing them can temporarily enable a disabled system allowing you to carry out tests if you work fast. The codes I got were, 01583-Leak detected in system 01577-Switch off due to excessive temperature 01583 is pretty self explanatory, it means the system has detected that the air pressure is dropping somewhere, ie an air leak. 01577 is a symptom of the air leak. It’s important to remember that not every fault code is the main fault, it can be caused by something else which is where a lot of people go wrong. Because of the air leak, the compressor is running for an extended period of time, causing it to overheat and switch off. This could be misinterpreted as a faulty compressor or relay but we will carry out the full diagnostic process rather than fire the parts cannon. FIFT- Fix It First Time Now we’re going to find out where the leak is. Enter the live data function and select compressor relay status and absolute height of all 4 shock absorbers. I have only selected the front shock absorbers because I already know the fault is in the front and am showing for demonstration purposes. Now, select graph mode and overlay all parameters in one sheet. It should look like this, You can see from the legend that the dark blue line is compressor on/off status, purple is left front height and light blue is right front height. Unless you are sure the problem is in the front, you should also have selected height for both rear shock absorbers and will have 2 extra lines. Notice how when the compressor is in the on state, both shock absorbers raise but the front right never reaches the same level as the left. When the compressor switches off, both shock absorbers start to drop. The front left drops slightly and levels off. The front right drops massively and continues to drop until it reaches the lower limit. The compressor switches on again just before 120s and the cycle begins again. We can see from this that the problem lies in the front right corner so 75% of the manual diagnostic work has been eliminated. I already know the problem is a leaking airbag because the one on the other side has already been replaced, but you will want to get a spray bottle filled with soapy water and start spraying it all around the air suspension components on the front right corner when the system is running. Wherever you see bubbles, that’s where you have an air leak. This is easier to do if you have a 4 post lift where you can raise the car but still have the wheels grounded. I’m lying on the ground on a piece of carpet which makes it more difficult to access and see components. A couple of final warnings. Never jack up a car with air suspension without first putting it in jacking mode. This can play havoc with the calibration settings and cause you problems when set the car back down. Never open any part of the suspension system without first venting the system. Your computer should have a function to do this somewhere in actuations or special functions. The danger of something pressurized flying off and hitting you is real. Slackening a pipe to let the pressure out of the system isn’t a good thing to do. When you loosen a nut on a pipe, you have less threads holding it in place. The pressure can easily overcome the lesser amount of threads, strip them and blow the fitting off. If it doesn’t hit you between the eyes, you’re left with 2 damaged threads which will be difficult to repair. Even if it does hit you between the eyes, you still have to repair the damaged threads you caused after you go to the hospital to get stitches. One last thing before anyone says it, I know you can use your eyes to find the problem. This is just an exercise in some of the things you can do with your computer.1 point
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Occasionally, sensors fail or misinterpret data. I'm not saying there's a right or wrong way. There are many ways to do it and using on-board diagnostics is one and just helps confirm diagnosis without much physical effort.1 point
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If you are a resident of Ras Al Khaimah and have recently been issued a traffic fine, we have some good news for you. Starting from next week, you can get 30% discount on traffic fines till November 1st as mentioned by Major General Al Abdullah bin Alwan Al Nuaimi, General Commander of RAK Police. The best part is that the drivers who have issued a traffic fine 81 days ago for violations such as over speeding or vehicle impoundment will also be eligible for the discount. This step has been taken in the honor of the Year of Zayed and the Ras Al Khaimah Police have also been working towards improving the satisfaction of residents by reducing the financial burden. Do you appreciate this step taken by the Ras Al Khaimah Police? Share your thoughts with us and also discuss what more could be done to make the life of an ordinary resident easy.1 point
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Read my disclaimer, last paragraph. I have already acknowledged your point. This article is just a basic lesson in some things you can do with your computer. For fun and nothing else. Next thing I plan to show is relative compression testing using graph overlays if you don’t have a compression tester gauge. I’m just waiting for a suitable car. There are so many things you can do with a diagnostic computer and if you’re a bit nerdy like me, there’s a lot of fun to be had. When the fun is gone from working on cars then what’s left? Sure as hell in UAE the salary isnt the motivation for doing it1 point
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its gr engine have tight tolerance in it so gold should work fine unless he fixed some quad turbos and is gonna tear the turmac all over with it....1 point
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Gartrac G3. Any good petrolhead knows that the Mk2 Ford Escort is one of the most iconic rally cars of all time. When production stopped in 1981, Ford brought out the Mk3 Escort. The Mk3 was front wheel drive rather than the rwd Mk2. This didn’t appeal to the rally drivers at all. A UK company called Gartrac started buying up Mk3 shells and fitting them out with Mk2 parts, with the added bonus of an 80’stastic wide arch kit. It started life with a Pinto engine bored out to 2,200ccs with a twin cam head developed by Cosworth, but these days many have been modified and you can find them with anything from a 2.0 YB Cosworth to a 2.9 V6 Cologne. When this car came out, Ford we’re developing the RS1700T. The Gartrac lapped the Ford Boreham test track 3 seconds faster than the Ford developed car which caused Ford enough embarrassment to drop the RS1700T project. Fords answer to the Gartrac G3 was to take the engine from the RS1700T and develop the RS200 I posted above. Some change! I often wonder why Ford didn’t just go all out and build the RS200 originally instead of letting a small car modification company embarrass them. Anyway, here is the Gartrac G3. You will recognise the Mk3 shape but it has phat arches and a RWD conversion. Also has the super sexy Mk3 Capri wheels.1 point
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