Loss of power and does not rev above 3000rpm

PajeroZam
Country: Zambia
Vehicle: Pajero 3.5L 2003
Posts: 1
Joined: Fri Aug 09, 2019 11:34 pm

Loss of power and does not rev above 3000rpm

Sat Aug 24, 2019 9:30 am

Good day all.

I have a 2003 Pajero 6G74 3.5 v6. Lately it has been acting up by having some loss of power above 2000rpm and when it reaches 3000rpm it gets stuck. Foot of the accelerator back on then it pushes past.

Other times it will push past the 3000rpm on it self when you keep your foot on the Gas. I have cleaned the GDI pump, replaced the fuel filter and cleaned the mass airflow sensor, but it still does the same.

Some days it will not have the problem at all then two days later the problem will be back.

Any ideas that maybe the problem.
TIA

Jaco du Preez


Lameck
Country: Zimbabwe
Vehicle: Pajero Exceed
Posts: 1
Joined: Sat Mar 14, 2020 5:56 am

Re: Loss of power and does not rev above 3000rpm

Mon May 18, 2020 11:48 am

Mine does the same.It was runningbpretty better however the power was reduced uphill.and the check light was constantly on with rail pressur sensor being caught on the machine.I rmvd the the gdi pump and replaced the faulty plates and diaphragm like.replaced everthing since then it has erratic idling and wont rev past 3000 rpm.times fuel rail pressure sensor is picked by scan too.but most of the time the scan tool says no fault code.
[email protected]
Country: South Africa
Vehicle: Shogun 3,5 GDI
Posts: 22
Joined: Thu Sep 21, 2017 2:05 pm

Re: Loss of power and does not rev above 3000rpm

Sun May 24, 2020 11:44 am

Hi you not said what engine you have. I've got the 3.5 GDI. If you have similar engine look at my previous threads on this. See pictures that show the filters in the High pressure pumps. These were removed and an inline filter fitted into the supply line, which should have been the standard. It's a hard job to remove the small filters pipework. But not impossible with a bit of ingenuity, removal of the pump not required. As it's a 2002 model fine filter becomes blocked. This reduces the flow pressure to the rail. The sensor sees this cuts out engine limp mode code 54 from memory. However as I also fitted a new sensor at the same time. I obtained from Japan had no experience of fault since. Good luck.

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