I will be taking an OBDII reading again tomorrow to see if the P0300 and P0660 come back up. It looked awful so it wasn't a bad thing to get that over with. Sorry to bombard you with a bunch of questions but I need to resolve this issue and if I can do it myself (as mentioned, I'm not experienced), it would be ideal. Where can I find instructions on how to do these two jobs? This seems to be a void in the forum, too. "P0660 is really simple to fix, your VICS solenoid is broken and needs to be replaced. Perhaps there are variations in the abbreviations/acronyms?Ĭan you help me? Did you replace both the VICS and the VTCS? It seems that doing keyword searches even on a Mazda dealer site comes up empty. Ill bet his VICS solenoid crapped out so he bypassed it and is using the VTCS solenoid to run the VISC. I couldn't find the part number for a 2002 Mazda Protege5 2.0 L VICS or the VTCS anywhere online. I see a part number reference above.but I want to make sure I'm on the right track here with all this VICS and VTCS business! For reference, the 2003 MAZDA Protege originally had a starting sticker price of 14,690, with the range-topping Protege MAZDASPEED Sedan 4D starting at 20,500. I guess I have to wait till I get an answer from mazda regarding this then.Hi CheeseHelmet! Thanks for the reply on my long post from Sept. ![]() I have a CAI for that, and i'm waiting for a stock TB to arrive to study and enlarge. when i see a dyno for this mod done on a mz3, then yea- i'd delete it. i read the vtcs posts- many of which are butt dynos and some cels- no real hard evidence on a 3. Zoom Sized for Print ALLDATA Online - 2001 Mazda Protege ES L4 -2. Airflow Inspection NOTE: Perform the following test only as directed. If not as specified, perform the further inspection for the VTCS solenoid valve. Which contradicts the "closing" of the flaps at 3750 from the service highlights.īack to my initial question- how could the owners with deleted VCTSs feel any low end power when the flaps are open after the engine's warmed up anyway? Carry out the 'VTCS Operation Inspection'. Mazda claims this technology is used to improve emissions, not torque. The valve does not completely disengage until 3750rpm. At low RPMs, VTCS is needed to compensate for this. Intake charge speed is less of an issue on valves that do not open very much, but recall that Mazda's VVT does not vary valve lift. The faster intake charge then has the inertia to swirl around the combustion chamber and more thoroughly mix with the fuel for combustion. The valve closes part of the intake path, increasing the velocity of the intake charge. The variable tumble control system (VTCS) was created to help emissions at low RPMs. When a DTC for the engine coolant temperature sensor or throttle position sensor has been stored, the variable tumble control is inhibited and the variable tumble shutter valve is constantly open.ĭoesn't say how or why or when it's stored for the flaps to open. What i don't understand is this part at another section of the book: At this time, the intake passage is narrower than normal, increasing intake airflow speed and also creating a powerful air tumble in the combustion chamber. ![]() A few minutes after start up the valves open completely and serve no other purpose. intake manifold vaccuum is applied to the varriable tumble shutter valve actuator by the operation of the variable tumble solenoid valve, closing the variable tumble shutter valve. VTCS (Variable Tumble Control System) is a set of butterfly valves in the intake that cause turbulence in the air during cold starts to allow for a leaner fuel mixture, resulting in higher combustion temps and faster warm up. 3750 rpm or more and engine coolant temp approx 63c (145f) and more (variable tumble shutter valve is closed) The book does not say that it opens up again.Įngine speed approx. After it reaches that RPM and the coolant is 63c (61.9 for the 2.0L) it closes again increasing power because of the intake air speed creating that tumble. What is the model number of the transmission of a 2000 Mazda 626 LX Automatic 4.0. 1999 Mazda Protege 1.6 L I have changed Bank one O2 sensor but did. car has no power but idles ok atleast it seems to. 2003 Mazda Protege problems (8) View all. Problems / Mazda / Protege / 2002 2002 Mazda Protege Problems. Then it opens up again when the engine's warmed and below 3750 RPM. The PCM turns the VTCS solenoid valve OFF to maintain startability and stability during engine cranking and for 0.15 second. Our list of 8 known complaints reported by owners can help you fix your 2002 Mazda Protege. What i have read in the service manual, when the engine's cold, it closes to increase combustion efficiency, emissions, etc.
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