ok i have a 1998 2.3l vtec accord lx sedan 5 speed, ok when my car is not in gear or clutch is in i can rev the **** out of my motor and it sounds great and does fine but if i have it in gear and im driving down the road it hesitates really bad and sometime wont go past 3 rpm... i really need to figure this out..so far ive replaced the plug wires and plugs just put headers on but it did it before i put headers on seemed to get worse when i did that...so any help would really be awesome! thanks nick
ok just tested something out and my car drove absolutely fine! i let it get to regular temp i just pretty much sat there and let it warm up for like 10 min and it ran fine? idk what thats supossed to mean
ok i have all the symptoms down to the wire.. i put a new cap and rotor on the car and it doesnt do it when its cold now.. now when it gets to running temp about 60 to 80% of the time it will hit 2.5 to 3 rpm and start losing all the motors power.. it will do it untill i absolutely floor it then it just all the suddens bucks and lunges forward untill i shift into the next gear and it does it again. if i shut the car off at a stop sign really quick and restart it sometimes that helps.. any ideas will help its driving me crazy! ive heard of other people having these symptoms but it seems know one finds the problem or atleast they dont post it.
If you have the money replace fuel filter if it still bucks then check fuel pump output get a brass fitting to fit where the fuel line connects to the fuel rail. Get a measuring cup. run the hose to the cup then turn KOEO ( Key on engine off). Then check online or ask someone at honda to look it up for you spec should be in ounces. If its lower than spec you'll have to change your fuel pump. Let me know how it works out.
Probably but why do you want to buy that ? Make sure fuel pressure is the problem before buying parts you may or may not need. And it's not an easy job to replace the fuel pump anyhow. Get a fuel pressure gauge and check it vs oem specs first.
However, it's 15 bucks for a fuel filter, I'd just swap that out first. You never know.
you can check the o2 sensor with a multimeter. im not good with those things so ill let someone else chime in. i usually remove them and see if they are burnt and make sure to replace them with a denso manufactured one.
cant remember how the ports are layed out on the f23a1. if its like the f22bs from the previous generation then there should be a plate held onto the intake manifold with 10mm bolts right next to the fuel rail. remove this plate and clean all the carbon build up from the inside of the plate and the egr ports underneath it.
if the above is not the case then i think there are no ports. i did a f23 im swap on my old f22b1 and the egr tunnel ran straight to the upper manifold chamber instead of to separate ports in each lower manifold runner. the lower intake manifold will need to be removed in order to soak the egr tunnel with acetone/paint thinner and then be rinsed thoroughly and set out to dry
how does she idle when hot/cold? check fuel pressure like stated above.
if it idles at running temp sometimes it stutters just a tiny bit most problems occur when running temp.
check all the fluid levels. any smoke coming out the tailpipe? could definitely be a faulty egr system allowing exhaust gases in at idle and low rpms. make sure to have the map(manifold absolute pressure) and the o2 sensor tested since they both control the air to fuel ratio.
compression and ignition timing check couldnt hurt either
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