3vz92

hello,

i got recently a Hilux 92 with 3vz engine 3.0 L. the problem i am facing is that when I start the engine and run few Miles everything looks normal. after a while ( 3-5min) i feel a hesitation which disappear when i turn off and on the engine. it will reappear again once i drive back 3-5 min.

another thing to highlight, when my rpm is below 3000 , i feel lack of power. as soon as i reach 3000 /3500 rpm i feel a sudden change in the performance and a huge power in the P/u which is exactly its original perfromance.
I changed my fuel pump, air filter, distributor cap, AFM, checked my timing belt , o2 sensor....

I still have couple of things to do:
- cleaning Fuel Injectors
- Check the Fuel pressure Regulator
- TPS sensor

please advise if this happened before with you in order not to waste more money and time.

much appreciated