Question about Nissan Cars & Trucks
This did not happen before and is doing it more often now.
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Posted on Jan 02, 2017
See if you can find someone with a VAG Com to tell you what the actual problem is
Posted on Nov 04, 2009
SOURCE: 1990 nissan hardbody 4cyl will
If it was running fine before this work was performed, then I would have to assume that the timing is off, or something was left unplugged. Before I tore the engine back down, I would recommend that you go back over the engine and make sure that all the electrical connections are plugged in. If that is the case, then you could try to adjust the distributor to see if that helps, but you may have to re-time the vehicle.
Posted on Mar 30, 2011
SOURCE: Hi I've got a golf
In your case the turbocharger is responsible for engine losing power.
The car goes in "limp home" mode!!!
After scanning the EDC engine control module with a VAS, VAG-Com or KTS -BOSCH diagnosis tool you will find this: Fault code: P1557 - Charge pressure control. Value above upper control limit static, (Turbo Boost pressure control exceeded).
1. Engine stopped and ignition switched off. Check all pneumatic connections and hoses between turbocharger actuator = pressure unit for boost-pressure control, boost-pressure control solenoid valve, vacuum reservoir, EGR control solenoid valve, intake-manifold flap solenoid valve, EGR valve with throttle - part of intake manifold. Also the vacuum connection between tandem pump and brake booster. If you find something wrong replace parts. If not go to step 2.
2. Extract the hose of the turbocharger actuator = pressure unit for boost-pressure control part of turbocharger. Instead of the original hose you must place another 1 meter long hose with the same inside diameter, and then you check to inspire yourself the air from the other one extremity of this hose. The mechanical connecting rod of the turbocharger actuator must have a smooth and whole motion. If you can do that with your mouth, then you must replace the boost-pressure control solenoid valve. If you can not reach this with your mouth, then you go to step 3.
3. This is the most difficult work. The problem is that the soot particles deposits inside the turbocharger plugging the variable nozzle geometry mechanism = adjustable vanes of the turbine. If the turbocharger actuator is not able to adjusts the turbine vanes, the charge air pressure increase too much and ECM (Engine Control Module) goes in "limp mode" = engine protection software. As a result the "limp home" mode engine still runnings until you turn the engine off (ignition switch off) and back on, when the "limp mode" is deactivated, but the fault still remain in ECM memory!
4. You must be able to extract the turbo from the engine and then to disassemble the turbocharger, clean inside adjustable vanes mechanism and refit all.
Posted on Jul 10, 2011
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