![]() When the TPS goes bad (or possibly has dead spots in it), the computer doesn't know to increase fuel delivery through the injectors, so a large mass of air is let into the engine without the fuel to compensate. At the TPS itself, you'd be looking (once you figured out which pins to test) to ensure the resistance goes up/down cleanly with movement of the throttle. In the computer it shows up as the throttle %. In either case you'd be looking to ensure there is a clean sweep throughout the throttle range. You can either do this by looking directly at the computer (through an OBDII device), or by measuring the output at the TPS itself using a multimeter. You need to see if it has the right output. My suggestion is to look at the throttle body, specifically at the throttle position sensor (TPS). So this is why we try something here ! We know how to use wrench so if you have something please tell us. I know this engine is almost the same as mazda protege. We made engine compression test, we got 12 bars on every cylinder so ~175 PSI. What can we do to make the car run better ? Really bad.Īnd we checked the intake tube if there is no crack. BUT even if there is not check engine, the car ALWAYS run like this. But 90% of the time, no check engine light. Sometimes the check engine light come and we got : P0171 too lean code. I got some video to show you what's wrong with this car : We got a problem to make the car running great.įor now, the car start and idle correctly cold and hot. My friend bought a 323F 2001 with 58 000 km, it's the 1.6 DOHC engine with 98 HP ( 72 KW ).
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