Question about Mitsubishi Galant
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Posted on Jan 02, 2017
The most common reason for the symptom you describe is one of two things. First of all change the fuel filter, then add a couple of bottles of dry gas to the fuel tank. This should solve your problem.
Posted on Mar 18, 2009
SOURCE: vw caddy 2001 TDI
Your car goes in "limp mode"!!!
If you scan the EDC-15P engine control unit with a VAG or KTS -BOSCH diagnosis tool you will find this:
"Fault code: P1557 - Turbo Boost pressure control exceeded"
You must try follows if you are able to do this:
1. Engine stopped and ignition switch 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 adjust the turbine vanes the charge air pressure increase too much and ECU (engine control unit) go in "limp mode" = engine protection software. As a result the "limp mode" engine still running until you turn the engine off (ignition switch off) and back on when the "limp mode" is deactivated, but the fault ("Fault code: P1557 - Turbo Boost pressure control exceeded") still remain in ECU 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.
It is some work to do here, but after that you will be full satisfied! NO MORE "LIMP MODE"!!!
Posted on Jul 11, 2009
Your excellent description provides a very short list of possible culprits, since your vehicle's symptoms all appear during periods of higher fuel demand.
(1) fuel filter - clogged - your description is absolutely classic (especially stumbling upon uphill acceleration) for a fuel filter in need of replacement.
(2) spark plug wire - one or more bad - an engine can muddle along while traveling over level terrain with one cylinder intermittently failing to fire, but try to go uphill (even the slightest grade), and the engine will skip badly and can even stall if asked to accelerate.
(3) in-tank fuel strainer - clogged - same symptoms as clogged fuel filter.
The fuel strainer is a sock-like pre-filter attached to the input side of the in-tank fuel pump.
The troubleshooting section of the 1998 Honda Civic EX manual states:
Priority Action Part Type Cause
1 Inspect Throttle Position Sensor - Faulty or Incorrectly Connected Throttle Position Sensor.
2 Inspect Mass Air Flow Sensor - Damaged, Loose, or Faulty Mass Air Flow Sensor or Circuit.
3 Inspect Choke - Stuck or Improperly Functioning Choke.
4 Inspect Air Cleaner Tempature Sensor - Damaged or Faulty Air Cleaner Tempature Sensor.
5 Inspect Fuel Filter - Clogged or Dirty Fuel Filter.
6 Inspect PCV Valve - Plugged or Damaged PCV Valve.
7 Inspect Carburetor - Worn, Faulty or Damaged Carburetor.
8 Inspect Fuel Injector - Dirty or Worn Fuel Injectors.
9 Inspect Hose (PCV) - Clogged or Collapsed PCV Hoses.
10 Inspect Fuel Pump - Faulty Fuel Pump.
11 Inspect Fuel Pump - Low Fuel Pressure.
Here's a YouTube video describing hoe to replace a fuel filter on a 2000 Honda Civic (the closest I could find for your 1998).
Posted on Oct 18, 2011
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