1990 Toyota Camry "smog car surging" Questions

1990 toyota camry 4 cyl fails HC part of CA smog test in idle. Also idle varies by 200-300 rpm and when driving the power really surges close to 3600 rpm. Could it be an O2 sensor? try using 93 octane

surging then you has a weak fuel pump. Change the fuel filter will also help. Also check the fast idle setting. == If everything checks out then set a smog check appointment in the EARLY MORNING. have

...express idle is surging after it warms up it flucuates lean/rich. failed smog at idle. passes at 2500 and 3000 rpm. replaced maf sensor, o2 sensor. still failed could be a vac leak or injector ...

how to adjust the idle on a 1989 chevy saburban 4X4 2500 series idle will not stabilize for smog check i have seen the gasket between the throttle body and intake blow out cause problems and also the ...

...car just failed smog as a gross polluter. PLEASE HELP change fuel filter.then check fuel pressure.if you got TBI FUEL INJECTION PRESSURE SHOULD BE 26-32 PSI. IF YOU GOT MFI FUEL INJECTION PRESSURE ...

...smog check and the car passed no problem. sound like a fuel starvation problem first try a new fuel filter. and go from there Sounds like the engine is being restricted by something. Here's the three ...

...smog check 2 weeks prior to existing problems. Frustrated and tired of taking car in. The P0123 means Throttle/Pedal Position Sensor/Switch A Circuit High Input.The P0300 means Random/Multiple ...

...SMOG THE CAR BECAUSE OF THE SURGING NOT SURE WHATS CAUSING PROBLEM O2 sensor is likely the cause, but could be a symptom of your cat converter too. One time I simply disconnected my battery for a few ...

the ERG vacuum and hose on the right of the engine. You may have a vacuum leak or a bad valve. This smog valve causes a lot of problems. 

...car go dead when i put my feet own the break an some time the motor surge when imlookat the rpm hand i have one plug that not hook up due to i change motor the smog control not hook up is that why it ...