I would suggest checking all the wiring from the battery to the starter solenoid and the battery to earth. (car body) Also the small wire to the solenoid from the ignition switch. A poor connection may cause intermittent starting.
Are you saying it will crank and not start, or stops cranking?
Stopping cranking:
Is it a proximity key (buttonless entry, start/stop button)?
Perhaps replace the battery in the key?
Otherwise check wiring as previously suggested. Concentrate on earths. Underdone or worn/corroded earths can cause all sorts of electrical gremlins. Check battery connections too, corrosion on the connectors or a loose connector can stop all the power getting out of the battery.
Cranking fine, but not starting:
Check or even just replace the Crank Angle Sensor.
Usual fault with this is difficult hot start, but difficult to start in general can be this sensor. Without it, the computer cannot determine engine timing.
I had a very difficult to diagnose fault once. Starting the car when sitting for more than half an hour would take two or three attempts. But would then start and run fine.
Injector leak down was tested, so was fuel pressure in the rail and a flow test was conducted.
Eventual culprit turned out to be a split high pressure fuel hose inside the pump assembly.
SOURCE: remove bateries from audi q7 remote and required disassembly.??
- Buy a CR2032 3V battery
- Pry open the battery cover on the remote using a flat head screw
driver or a table knife. The pivot point is the chain ring holder opposite to the key.
- Replace battery
SOURCE: I need the time diagram of the chain sprockets'
The timing diagram of the chain sprockets inside 2007 Audi Q7 4.2 FSI
SOURCE: Hi I have a 2007 Q7
Try to reset it as per MMI manual.The reset procedure is as follows:---
press SETUP, BIG KNOB and top right soft button together.Make sure you press them simultaneously. When done right, the MMI screen will go blank, then show the MMI booting logo and return to the menu finally.Check fig below for which button to press:--
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This problem is also faced by many other users too.In there cases the MMI screen goes blank after car is parked in the sun for too long.The MMI starts working in their cases after the climate gets cold.So try this also.also try resetting by shutting car off, opening door closing door, and restarting the car--------------Check out this possibilities.This will help.Thanks.Helpmech.
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SOURCE: 05 kia spectra will not start
I have the same problem. However, I found that I have to simultaneously, push in the clutch, turn the key with my left hand, and move the shifter from one gear to the next until it starts. Has works for a week or so, but, I just ordered a new "Neutral Safety Switch" in hopes that that's the problem.
SOURCE: I need the time diagram of the chain sprockets' inside 2008 Audi Q7 3.6 FSI
go to nearest autozone and they will print out diagram for you at no cost. I have done this alot.
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Thank you for your input. I have noted a couple of other comments/ people have experienced similar issue and was hoping for a direct route to the problem
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