Question about Honda Civic
It could be the MAF sensor or the air temp sensor, it could also bet the idle sensor, it would be best to put the engine on an ecu reader to read live data as it would show at what temps the senors are working at some times it may not trigger a fault, but live data will tell you at what temps the sensors are say they are and you should be able to see what one is not working right. i would think it would be Maf sensor when was the last time the air filter was changed. if its really dirty change it and also use some MAF sensor cleaner you can buy it from a range of places and clean the MAF sensor. be careful cleaning it only use the recommended maf cleaner as other chemicals will damage it. remove the sensor from the rubber pipes a spray the cleaner on the the sensor an a bit of paper towel give it a good clean with the spray and leave it to dry before refitting. some people use carb cleaner but would not recommend it.
Posted on Jun 21, 2017
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Posted on Jan 02, 2017
SOURCE: stalls and wont idle when cold
Re the trooper. You have a couple of possibles. The most likely is the glowplugs or glowplug relay. Don't be fooled into thinking glow plugs only heat to start - the also do whats called postheat. That is to raise the cylinder temp until the block is warm. IF they are not functioning (clip a light onto one whilst switching the glowplug on to test the relay) this is common.
Most likely is a stuck EGR valve - stuck open so running a very lean mix when cold. Its two bolts on the inlet manifold, pulls out and looks covered in soot - it should push in and spring out. Can be cleaned in petrol or alcohol or with compressed air.
More remote is possible you have a faulty injector...only really testable by an engine centre...
Posted on Jan 26, 2009
A reason for hard shifting could be a problem with many things with various degrees of seriousness. It could be your ATF( automatic transmission fluid) is low or broken down and old. This would cause the hardness and the reason for stop and go traffic effecting it. Another possibility is your transmission is just shot, and the timing gears inside are worn and not properly shifting at the correct RPM causing a **** during shifting.
Some possibilties, not all!
Posted on Mar 27, 2009
Check for vacuum leaks. Also try cleaning the ISV.
If that doesnt work go to vwvortex.com and post your issue there
Posted on Jul 08, 2009
SOURCE: rough idle then stalls
Vacume leak or bad idle motor. With the car in park and running with the hood open listen for leaks moving your hand around the different hoses looking for a change in the sounds that you hear. The idel motor also makes the car idel up to 1500 RPM or so right at start-up then idel down, If it doesn;t the idel motor is likly. Check engine light is on when running? Test for codes, Follow code test charts don't skip any steps!.
Posted on Nov 02, 2009
Testimonial: "Found the problem vacume leak like you said."
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