Question about 1993 Honda Civic 4 Door

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Honda civic low rpm

Hi, I have a 93 civic ex coupe low mileage stock everything after install header exhaust things still ok till couple days later idle gets very low to 300 or 200 rpm doesnt stall but dont sounds nice. Check oil and spark plug nothing wrong niether timing belt. Maybe need to clean TB or iac?? I try adjusting the iac but idle doesnt seems change so curious if can help. Thanks

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  • Honda Master
  • 42,190 Answers

Changing the exhaust system can alter the gas flow and may create problems for the sensors . The HO2s sensor and the O2 sensor may now be operation on the edge of the parameter settings and any exhaust coating on the sensors may be affecting their performance. Run fault codes to check the sensors and sometimes removing them and cleaning them in vinegar to remove the coating will improve the situation. What ever is the problem if it started after the manifold change then that is the area in which to seek answers.

Posted on Mar 27, 2014

Testimonial: "It was a rush on the exhaust system im thinking maybe o2 sensor maybe try do lil fixing catching up on the rush. I drive a stick shift also so it doesnt died usually and when driving it doesnt drop low like usual but when car stop on nuetral then idle gets too low like its gonna died so really need to get to the problems before worst"

  • 1 more comment 
  • Bill Boyd Mar 27, 2014

    check for vacuum leaks and exhaust gas leaks as they will affect the sensors as well

  • Toda Xyooj
    Toda Xyooj Mar 28, 2014

    prob so, cus it I start up the car I hear leaks from exhaust tip that connect to the system. big air leaks so maybe try that first. Im more to thinking its the o2 sensor cause the car is 10/10 condition jus after installing aftermarket then it happen so if ya have same experience before or if knw I wuld like to know so I can get closer to solving the problem

  • Toda Xyooj
    Toda Xyooj Mar 28, 2014

    I have an o2 sensor connect to the header but how come I dont have one that connects to the catalytic converter is it how it is for 93 ex?

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SOURCE: 2003 Honda Civic -LX Timing belt

90000 Miles on the Timing Belt. Do not let this go! A timing belt failure can cause internal engine problems.

Should cost around 200 or so, depending upon your local labor rates.

Good Luck!

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Posted on Jun 17, 2008

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SOURCE: idling problem when ac turned on honda civic lxi 1999

Hi,

To my knowledge (at least in my country), some Honda Civics have a compensator solenoid the pushes on the throttle that adjust the engine's RPM to its standard idling when the A/C compressor is activated. Technically, this solenoid is nothing more but a coil and a plunger. When the compressor runs, the same relay activates this solenoid and pushes the plunger forward increasing the RPM. Pls check/clean/adjust/replace as deemed fit and necessary.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

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SOURCE: Honda Civic 2001 Radio Code

HAVE TO FIND OUT WHY MY 2003-2005 HONDA CIVIC RADIO DOES NOT WORK. REMOVE BATTERY LAST WEEK AND RECODED THE RADIO. WORK FOR A FEW DAYS AND IS DEAD TO THE WORLD. HOW CAN I TAKE THE RADIO/CD UNIT OUT OF THE DASHBOARD WITH EASE. HOW CAN I TAKE THE RADIO/CD OUT AND IN ?

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SOURCE: 2004 honda civic ex

Hello, Your Honda Civic with a 1.7 L engine has a belt.
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SOURCE: 1994 honda civic 1.5 16v stalling after pressing accelerator from idle

Another place to look is your IAC, or Idle air control valve. It is bolted to the back of the intake manifold, and can be removed and cleaned. It is usually the cause of most Honda Idle problems.

Posted on Apr 18, 2010

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