Skip the auto shop - Our mechanics make house calls

Q: pick up low & starting problem in morning time.

asked by on

I have audi Q7 3.0L v6, this is my dream car, last week saturday i came back at home after long drive{385KM} still saturday night my car was ok but next morning my car had a long self and too much white smoke from silencer but no i did not see any warning light on instrument panel and i drove car after 5 minute idling. when i drove my car i feel car did shift gear properly for checking i pressed full accelerator then i feel engine knocking sound and i stopped car after switch off engine i start car but still engine got long self and engine misfiring suddenly glow plug light on in cluster. Then i came back at home. i have car scanner, so i was check with tester i found code p8700 fuel pressure to low. please suggest me for next step.

My car has 68900 miles.
My car has an automatic transmission.

A: Hello. If your vehicle is showing trouble ...

Hello. If your vehicle is showing trouble code P0087, for low system fuel pressure then that is likely part of what may be causing your performance issues. Low fuel pressure can cause an engine to lose power, misfire, and in some cases may even prevent the engine from running at all. A few things that can set off this code are a faulty high pressure fuel pump, a faulty in tank fuel pump, or a bad fuel pressure sensor. If either of the fuel pumps malfunction it may affect their ability to provide fuel pressure, which will set off the warning light and cause performance issues. A faulty fuel pressure sensor may send a bad signal to the computer, which can do cause the same symptoms to occur. If the glow plug light is still on then that may be a sign that there is an issue with one or more of the glow plugs. As it appears that your vehicle may possibly be experiencing more than one issue, I would recommend having a professional technician, such as one from YourMechanic, come to your location to determine the cause of the check engine light and symptoms.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Red Battery indicator comes on. Car cuts off on the highway.

Hello There, It sounds like you may have a failing alternator or voltage regulator. As you know, the alternator is responsible for charging the battery while the engine runs by generating amperage and recharging the battery while the engine turns...

Q: Engine vibrates at idle

Hi there, thanks for writing in. I'd be happy to offer my insight. I'm curious as to your vehicle's motor size. There are four different motors available in your Cherokee, each with their own set of issues. I would...

Q: Carplay not working phones

Hello. It is possible that there is a problem with the bluetooth phone hook up. It is also possible that there is a problem with the entire unit, or that the unit needs an update from the dealer. My suggestion...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...