Engine startup problem
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Engine startup problem
I have audi a4 2.0 2013. Sometimes whenever I start my engine it just doesn't want to start and I need to pump gas pedal for a few times to make it work. And when that happens when I try to drive the car it hardly moves, engine chokes and most times just shuts off. the real big problem is whenever I stop in a hill. If I stop in a hill, it becomes a nightmare to make the car drive again. When I went to Audi service they changed fuel pump, fuel filter, spark plugs, and some sensors I don't remember. That didn't have much effect. Lastly they said that can be because of turbo, but I don't want to spend couple thousands just on an assumption.
What do you advise me to do?
What do you advise me to do?
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From: Georgia
Why do they propose that the turbo could be involved?
Fueling system would seem a logical first step, but appears they just threw parts at it and didn't actually determine the cause in the data. Which fuel pump did they replace, the in-tank electrical one or the on-engine mechanical one? Also, do you have the CPMx engine with the E85 support, or the gas-only CAEx engine?
AZ, is that country Azerbaijan or state Arizona? If the country, is your engine a Gen2 or Gen3? Does it have one or two N205 "dials" on the upper timing cover?
On a hill. That seems an odd scenario. Only thing I would think of would be fuel in the gas tank away from the pump inlet. But if the tank is full, that shouldn't be an issue. But the turbo won't care if the car was even upside down.
The EPC (electronic power control) system can be cryptic. They looked over the state of the throttle body? These engines can develop a lot of carbon build up if it's a Gen2. They looked at the build up?
Fueling system would seem a logical first step, but appears they just threw parts at it and didn't actually determine the cause in the data. Which fuel pump did they replace, the in-tank electrical one or the on-engine mechanical one? Also, do you have the CPMx engine with the E85 support, or the gas-only CAEx engine?
AZ, is that country Azerbaijan or state Arizona? If the country, is your engine a Gen2 or Gen3? Does it have one or two N205 "dials" on the upper timing cover?
On a hill. That seems an odd scenario. Only thing I would think of would be fuel in the gas tank away from the pump inlet. But if the tank is full, that shouldn't be an issue. But the turbo won't care if the car was even upside down.
The EPC (electronic power control) system can be cryptic. They looked over the state of the throttle body? These engines can develop a lot of carbon build up if it's a Gen2. They looked at the build up?
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Both fuel pumps were replaced.
Then they cleaned something I gues connected to the gas pedal, the thing that controls the valve when you push gas pedal.
It is Azerbaijan. Couldn't quite determine thing about engine types, can you ellaborate on that?
Then they cleaned something I gues connected to the gas pedal, the thing that controls the valve when you push gas pedal.
It is Azerbaijan. Couldn't quite determine thing about engine types, can you ellaborate on that?
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Joined: Dec 2001
Posts: 13,911
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From: Georgia
They probably cleaned the throttle body then. Our cars are "drive by wire", so the accelerator pedal is not directly connected to the throttle body. The pedal position is noted by the EPC (electronic power control), which then looks at a bunch of stuff and decides itself how much to actually open the throttle body. Cleaning it apparently is a common concern (in the automotive world, not necessarily ours), though I've never seen any build up of consequence on mine.
If the top front of the engine (upper timing cover) looks like this:
https://www.ecstuning.com/b-genuine-...er/06h103269h/
with one N205 hole and a solid top, then it's a Gen2 engine.
If the top front of the engine (upper timing cover) looks like this:
https://www.ecstuning.com/b-genuine-...er/06k103269f/
with two N205 holes and the oil fill opening in the top, then it's a Gen3A (vs. the Gen3B options in the B9) engine.
The two might have some different troubleshooting considerations as there are quite a number of differences in components. We only had the Gen2 in North America for the B8 generation.
The issue could be complicated by the transmission too. What transmission do you have in that car?
But a clean list of the DTCs (such as a VCDS autoscan log) would be a worthwhile starting point.
If the top front of the engine (upper timing cover) looks like this:
https://www.ecstuning.com/b-genuine-...er/06h103269h/
with one N205 hole and a solid top, then it's a Gen2 engine.
If the top front of the engine (upper timing cover) looks like this:
https://www.ecstuning.com/b-genuine-...er/06k103269f/
with two N205 holes and the oil fill opening in the top, then it's a Gen3A (vs. the Gen3B options in the B9) engine.
The two might have some different troubleshooting considerations as there are quite a number of differences in components. We only had the Gen2 in North America for the B8 generation.
The issue could be complicated by the transmission too. What transmission do you have in that car?
But a clean list of the DTCs (such as a VCDS autoscan log) would be a worthwhile starting point.
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