Engine Performance problem
1999 Honda Accord 6 cyl Four Wheel Drive Automatic 147000 miles
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Okay, I have a 99 Honda Accord.For the last few months a type of stalling,bucking,jerking type trouble.I went to two different mechanics and they said it was the EGR passageways. So I had the honda dealerships clear the passageways.Still...same problem.I took the car to honda and got another scan.And they said it cylinder misfires.So I spent around 600 for them to fix that...and replace something with the ignition and housing distributor.Then they reccommend I get a catalytic converter to help with the acceleration because it wouldn't go faster than 10 miles an hour.So I get that AND IT STILL BOGS,STRAINS,HAS TROUBLE KEEPING ONE STEADY SPEED WITHOUT JERKING.Now they say it is an O2 sensor...HELLPPPP?...that is all...thank you

Usually it turns out to be either the PCM ground, or a bad MAF, you can try this first tho, comes right from Honda to thier Techs...

Hi str8ndirect,

The O2 sensor can cause problem with jerking, mifiring, lack of acceleration etc.

Another thing to test is the throttle position sensor.

After getting the car scanned 4 possible reasons were causing the problem.Maf sensor.....oxygen sensor,ignition misfire,or fuel injecto problem.Andy suggestions?

Hi str8ndirect,

Honda uses MAP sensor instead of MAF and it is quite reliable.

I would go for the O2 sensor first. Misfiring could be due to the EGR and is related to the O2 sensor.

I have had my egr replaced twice.And had the egr passageways cleaned.If it's not the O2 sensor what's my next guess?

Hi str8ndirect,

Does the jerking only appears at between 1800 to 2200 rpm?

I have envounterd cases of it happening and it was the EGR valve working with the purge solenoid clicking away.

Check throttle position sensor reading, 0.5 v at fully closed and 4.5 at fully opened throttle. transition from close to open should be smooth. You might need to check the catalytic converter too.

I have absolute no idea what a solenoid is.And I have have the EGR replaced twice,and just recently got a catalytic converter.The converter helped it accelerate better but I still have trouble keeping steady speeds.I keep hearing it might be the fuel regulator or the o2 sensor.Your thoughts?

http://www.2carpros.com/car_repair_video/test_fuel_injection_pressure.htm
Go here and checkout our video.
Rent the tool at Autozone. Was the 02 code for lean operation P0171?

merlin2021 wrote:

http://www.2carpros.com/car_repair_video/test_fuel_injection_pressure.htm Go here and checkout our video. Rent the tool at Autozone. Was the 02 code for lean operation P0171?

Actually yes it was.I got a code p0170 and p0171.I was told that it could be the o2 sensor or a fuel pressure regulator that could fix the problem.Any cheap way to know for sure?(yes it has been awhile...still unable to get it fixed)