This is my take on the turbocharger problem encountered on Puma engine 2.2. and 3.2. (RANGER t6 engine). I am no expert but
as an engineer I guess I might be of help troubleshooting. The puma engine uses vgt and doesnt have a waste gate. Vgt has movable vanes, varrying the angle depending on load. The higher the load, the more it will open and vice versa. This turbo start spooling even at low loads as it is able to adjust opening of the turbine nozzle so as to maintain exhaust gas pressure to force the turbine wheel to rotate. At high rpm and loads this is full open and all the exhaust gas pressure will pass through the turbine,all forcing the blades to rotate really fast that may create excess pressure unlike if it has a waste gate, the waste gate will open and exhaust gas will by pass the t/c.
Only thing for the ranger is the opening of the vanes is controlled electronically by the ecu and coupled with it, new crdi diesels nowadays have a throttle body controlling the mass air flow to the engine. Diesel engines used to have full open intake air all the time. On, the ranger's engine it is not the case. So, my analysis points to the ecu as the culprit. If ecu is properly tuned this vgt control and throttle plate control is smoothly executed. If not, there is a scenario in which the turbo is now full boost but the throttle plate is just partly open, the result? hose rupture! due to over pressure on the hose. Why a hose so new will rupture in the first place? If the hose withstand the pressure, then your turbo will get damaged as it absorbs the pressure back, creating tremendous overloading to the turbocharger bearing and then it fails. ThAt's the time you will hear the whining sound of the turbocharger. It is the sound of a bearing failure.
I really think there is an issue with the ecu, otherwise some sensors or actuator motors are not functioning correctly.
Feel free to rebut my analysis on the issues.
^^^ Ford discountinued that variant, only 4x2 for Wildtrak 2.2 liter.
Powertrain warning light turns on when doing prolonged high speed runs (150 kph and above).
Most likely a problem in the intercooler/hose/turbo. Ford Makati wasn't able to replicate it so my turbo hasn't been replaced. So far no loss of power so ok for now.
Will bring it back once problem returns and they're willing to cover it with warranty anyway.
Posted via Tsikot Mobile App
Mine power train lights up on Several occasion that was before it reached the 1000 kms. mark.. But after 1k kms. nl never na bumalik... Yung power train light...
I don't know the exact word to describe the sound but I can describe it as like the turbo-sound with a high pitch in which it's clearly noticeable if you turned the music and A/C off. And it occurs when I go over 1350 RPM at any speed. But you can't hear it when you're not accelerating. The higher the RPM, the louder the sound. And later this afternoon they told me I need to wait for 3-5 weeks for the replacement part/s.
Di ko alam kung ganito din yung sound nung sa akin, parang 1st-2nd gear ko lang naririnig na parang may nangingig sa loob or yung hood(inopen at sinara ko din yung hood pero ganun pa rin),dati hindi tahamik naman, napansin ko lang ito after ng byahe ko sa pangasinan at mga 5k+ ko na sa odo ko.
baka may malapit na taga QC dyan, patest drive ko lang yung sa akin kung normal lang ba yung sound na yun.
Ganun ba kadami problema yun t6? Planning to buy a 3.2 a/t to replace my fxt, pero parang nakakadiscourage bumili.
Or might as well wait till next year, para sa nisssn np300, saw it in Thailand last week, maganda rin naman.
Sir Glenn, there is no way to keep it full open. It is controlled by ecu.
Posted via Tsikot Mobile App
Vanes are electronically controlled, unlike older turbos that are electro-pneumatic(vacuum controlled) which can be fooled around..
What i like with this engine is the water pump and oil pump which is easily accessible without dismantling the front end.
Tho I dislike how they position the EGR which is near the firewall, i bet blanking EGR is a PITA.
is the Ranger sold here in the Philippines equipped with the GLOBAL OPENING and GLOBAL CLOSING feature? Anybody here who tried successfully activating the POWER WINDOWS FEATURE wherein you can open all the windows using the remote?