Hello Nairalanders and car gurus, my car is Toyota sienna 2004 xle, I was driving and I noticed that the speed wouldn't increase when I press gas pedal further. But I tried to manage it to mechanic. But it couldn't. The rpm won't increase when I press gas pedal. The car starts normal but rpm won't increase beyond 2000rpn when gas pedal is pressed. If I put it in drive the car moves but the gas pedal won't press the rpm beyond 2000rpm. Please what could be the cause and solution

Check d fuel pump

Change the fuel pump!
If not na gear box o!

Milosval:
Hello Nairalanders and car gurus, my car is Toyota sienna 2004 xle, I was driving and I noticed that the speed wouldn't increase when I press gas pedal further. But I tried to manage it to mechanic. But it couldn't. The rpm won't increase when I press gas pedal. The car starts normal but rpm won't increase beyond 2000rpn when gas pedal is pressed. If I put it in drive the car moves but the gas pedal won't press the rpm beyond 2000rpm. Please what could be the cause and solution

Check throttle position sensor. Scan car.

Scan first. Possibly accelerator pedal sensor or throttle position sensor issue.

Scan for codes.
Interprarete codes
Follow recommended repair sequence.

I guess that model uses drive by wire throttle system, your best bet is to scan it to determine if the problem is coming from the throttle position sensor or the actuator

Limp mode

HeavenlyBang:


Check throttle position sensor. Scan car.

Very accurate suggestions, once had similar issues with my eod, turns out the throttle the cable was broken.

Many things could cause this. Let me mention few.

Blocked exhaust Catalytic converter
Faulty Throttle position sensor
Weak fuel pump
Wrong timing/ Camshaft sensor or circuit /VVTI circuit or sensor
Fuse

Thanks everyone for your suggestions. The problem was injector circuit/socket. It was loosely fixed to the injector. Scan could not detect it, but an experienced automobile electrician detected the fault and fixed the circuit well. Now the car is working fine even the gear selection works better now plus the fuel economy has increased.

Milosval:
Thanks everyone for your suggestions. The problem was injector circuit/socket. It was loosely fixed to the injector. Scan could not detect it, but an experienced automobile electrician detected the fault and fixed the circuit well. Now the car is working fine even the gear selection works better now plus the fuel economy has increased.

Thank God... Any little thing they start shouting gear box... Someone will have High B.P one day