I suggest check air cleaner and exhaust for blockage like catalytic converter. Are you check for any OBD fault code? 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. Tell us news.
Check the lead on the negative side of the coil to see that it is in good shape,follow the lead for the tach off of the coil to the condenser,and by pass around it,the condenser maybe the problem.
yes it would,or else the noise would come over the radio,but who am To say,anyway I will bow out good luckyes it would,or else the noise would come over the radio,but who am To say,anyway I will bow out good luck
Hi! Is there a shift setter on the tach? You may need to set it to your desired shifting manner. Its what restricts the tach from going over 2000 rpm. Once setted you'll be good. Hope this helps and have a good one!
Sorry...thought I had more information for your vehicle, but my internet connection for Alfa Romeo is down
However, assuming you know that your engine is actually running higher than 2000 rpms, means you have a voltage drop issue on the tach signal from your coil
assuming your vehicle actually cannot exceed 2000pms, then you might have an exhaust restriction
Answers & Comments
I suggest check air cleaner and exhaust for blockage like catalytic converter. Are you check for any OBD fault code?
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.
Tell us news.
Check the lead on the negative side of the coil to see that it is in good shape,follow the lead for the tach off of the coil to the condenser,and by pass around it,the condenser maybe the problem.
yes it would,or else the noise would come over the radio,but who am To say,anyway I will bow out good luck
Hi! Is there a shift setter on the tach? You may need to set it to your desired shifting manner. Its what restricts the tach from going over 2000 rpm. Once setted you'll be good. Hope this helps and have a good one!
Sorry...thought I had more information for your vehicle, but my internet connection for Alfa Romeo is down
However, assuming you know that your engine is actually running higher than 2000 rpms, means you have a voltage drop issue on the tach signal from your coil
assuming your vehicle actually cannot exceed 2000pms, then you might have an exhaust restriction