Question about BMW 330

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HI I never used the car yet just bought it.we done a computer check and this code come on in the screen Rail-pressure monitoring on engine start code 1B90

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How did you manage to read this as i have lots of different software from china and even a special machine that cost 3000euros and i cannot even read anything on the newer cars In fact some of the new cars have the immobilisor cut in if i plug inbto the OBDII ,its called illegal access by the dealer and heres you got into the set up teh engine cycle ,iam amazed

Posted on Mar 20, 2011

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2007 honda cr-v diesel starting problem


Hi Francis
Ii advise you to get a back leak test and fuel rail pressure check by expert,
the problem that you have is low fuel pressure, probably caused by injector/s back leak.
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My Durango will turn over but will not start it has fire the fuel pump is working I have fuel in fuel rail but won't start


Are there any lights lit on the dash ? Check engine , security etc.. ? How do you know it has fuel in fuel rail ? did you do a fuel pressure test ? What year is the vehicle ? How many miles ? Does the engine have compression ? Is the engine computer turning on the injectors ? How To Check Fuel Pressure EricTheCarGuy How to test fuel pressure injector pulse and spark with basic tools

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2001 chevy silverado fails to start on random days, 50 psi fuel pressure at test port, a couple of hours later it starts perfectly and does so for a month or so then does it again


need to check fuel pressure before trying to start and see if it's bleeding down or staying pressurized hook gauge on and check periodically before trying to start, seems like mine done that and it was a b ad fuel pressure regulator on the fuel rail, 5.3 ? it's on drivers side rail with vacumn line erunning to it about the size of silver dollar diam.

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1 Answer

Mercedes benz S420 W221 2007 having hard start, Ive change the fuel rail with the sensor, the pressure pump, and norssle


The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM or ECM,ECU), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems can and do cause many drive-ability related problem such as rough idle and other symptoms.

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1 Answer

Engine will not start


Hello.

The following are the general instructions on the start of diagnosing any electronically controlled engine or transmission problem.

The engine and the automatic transmission (transmission control is only for automatics, engine is still computer controlled no matter the transmission type) in this vehicle are computer controlled and in most cases when a fault occurs a fault code is stored in the memory of the computer control module. There are exception to this, such as the Mass Airflow Meter and fuel pressure problems. What must be done is to have all the basic testing done such as a scan of the system for fault codes as well as a check with a live data scanner tool for engine functions that are not within range of normal, a trained technician is required to know what is correct and what isn't, then based on careful diagnostics done from a factory repair manual the correct part is replaced or the wiring repaired or the computer replaced (known as the PCM), which is very rarely the problem. Other basic checks must be done as well such as mechanical problems with the engine as well as engine state of tune and mileage on the engine. The transmission can have mechanical issues as well such as no gear engagement at all or a failed pump or other pressure related problems. Also engine mechanical problems ca cause many drive-ability related problem such as rough idle and other symptoms


Oct 19, 2012 | 1998 Mercury Mountaineer

1 Answer

Volvo xc90, warning comes up ''engine service required'' then loss of power until warning goes off.


Hi.

The loss of power can be caused by a big number of different fault. A code reading would be a good first step to troubleshoot the fault.

If the check engine light comes on, then engine faults have been detected and related codes have been stored in the vehicle's computer modules. Primary DTC (trouble codes) are stored in the main computer (called ECU). Such codes can be read using an OBDII code reader connected to the socket under the dash. Here a code reader: U480 Can Bus.

A code scanning can also be performed at the dealer place or at any garage. In US it can be done for free at the nearest Autozone.

If there is no indicative codes also test the fuel pump and pressure regulator by reading fuel pressure with a gauge connected to the port on the fuel rail. Here the tool: Wilmar W80594.

Regards.

Ginko

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2004 jetta tdi wont stay running acts like running out of fuel changed fuel filter 2 weeks ago


If you aren't getting a error code from the cars computer maybe you do have low fuel pressure.

This can be checked using a fuel pressure guage. It should be done by a mechanic who knows diesel engines and VW's in particular.

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1 Answer

Mondeo 55 plate starting problems when the engine is warm


Hi Warren,,
These cars are fitted with a Delphi common rail system that is known for various faults including yours, you need to have a sealed rail test done on the injectors as they are probably leaking off to much causing low pressure in the common rail,when the car is warm,they also suffer with injector code loss ,no reason they get confused this normally gives poor performance and high fuel consumption ,if the injectors are fine check the system for air leaks in the fuel supply pipes and check the leak off pipes for leaks,even the smallest leak can let air in,if the engine light has come on get the codes read ,
Darren DCS

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2 Answers

Fuel rail pressure sensor chkt high input p0193


how to repair a Ford Freestar fuel rail pressure sensor

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4 Answers

Service engine light on showing code p0089


Diagnostic trouble code P0089 - The ECM commands the Bosch high-pressure fuel pump to deliver a specific fuel rail pressure - that can vary up to 23,000 psi depending on load and speed. The actual pressure is monitored via the fuel rail pressure sensor. If the fuel rail pressure varies more than desired or if commanded fuel pump flow is 100mm3/second or less, DTC P0089 will set.

Corrective action includes measuring the fuel rail pressure using a Tech II scan tool, then compare that to commanded fuel rail pressure with the engine running at 2000 rpm. The difference must be less than 20 Mpa.

A blockage in the fuel tank or plugged fuel filter could cause this fault (excessive vacuum in fuel line). If there is less than 5 in Hg of vacuum when measured at the fuel pressure test port at 3000 rpm, the fuel pressure regulator could be defective, and may need to be replaced. The fuel pressure regulator (FPR) is a sub assembly located on the Bosch high-pressure fuel pump.

Jul 30, 2008 | 1996 Chevrolet Cavalier

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