Hello all im new to the forum and have been working on cars for many years. I currently work at a gm dealer but im not very fermilar with honda. I have had this car for 2 years and its always run great but recently it has had a few problems. When im driving the car and it gets warmed up it will at times lose power and sputter. The only way to fix this is to either put it in neutral and rev it up or put my foot to the floor and then it will clean up (sometimes for a while sometimes it does it agian) i changed the plug wires cap and rotor and it cleared up for a while but now its back. Could this be the coil or the distributer because i have heard this is common and this year honda. It also seems the be losing power so i think that may be the same thing. Thanks

 

Check your EGR ports.

 

Now i figured that would also effect the car at idle and much more there than at speed. The car idles fine so i didnt figure that would be an issue but maybe it has had an egr code since i got the car that i never did fix.

 

Some reading:


http://home.comcast.net/~em-engineering/T2T013.pdf

 

A slightly stuck open EGR valve can also cause your car to idle rough if I'm not mistaken.

 

It has had a code for the egr not functioning since i got the car. I worked for a while then the check engine light came back on. I just never got around to fixing it so maybe i should just disconnect it and see if it goes away

 

Well i did unhook the egr and it didnt seem to help and it acually is getting worse. It almost seems like after it happens something needs to be reset like a sensor. I happens worse in the morning and this morning it would not stop doing it. It cought and sputtered until i pulled over and shut the car off. When i restarted the car it acted fine for the rest of the trip (about 30 miles). It still feels like its loosing power so idk it feels like secondary ignition but im not sure. Is it true the distributers in these cars had problems. Thanks

 

Having same issue with a 96 Accord. It starts fine and idles fine but once the coolant temp hits 105 degrees it banks COMPLEYELY lean, spits, sputters, pops and nearly stalls. Acts like it's running out of gas. If I floor it it acts like you tripped a 100 shot of NOS on a switch! Or I can turn it off and restart and it is fine. I had my Modis on it a few days ago and there is NOTHING wrong with the datastream. It just all the sudden banks lean at a set coolant temp and it's over, everything goes haywire. Got curious and put a new temp sensor in it, no change. I have swapped MAP, EGR, IAC and FITV with a known good car and nothing changes. Blocked off the purge and still no change. Even swapped the PCM from a 97 and it still did the same thing. Flushed and bled coolant system. Checked grounds, cleaned and applied di-electric grease to every connector in the powertrain system. Ran a fuel pressure gauge taped to the windsheild and fuel pressure never drops. I just can't find what's going on! By looking at the data there is nothing wrong! Even tested the coolant temp sensor with my meter and boiling water from 62 degree to 210 degree. I have been after this issue for about 3 months now. Even master techs at Honda who have been there since 92' have never seen nor know whats going on. I hav eposted on the IATN board and no one knows. All I want to know is what else is there? I mean really... The fuel management system has been completely checked and/or swapped. EVAP has been checked and blocked off. EGR has been checked, swapped and blocked off.

Dude, i'm at a loss. If you figure anything out please let me know! I'd really like to have my car back!

 

Hooked my scope up to my upstream O2 on my lunch break today... Even though it is new with less than 1K miles on it (replaced it when all this junk started), it is failing. It's a Bosch OE, direct fit replacement from Carquest. No coolant deposits on it... Did an injector bleed test with a gauge and pump on for 10 min with no fuel drips from the injectors. Block test, misfire monitor, etc.. Pretty much just trying to find something that would of made it fail! Anyways, everything checked out so I went by Honda and got an OE sensor. Ran it with my scope on the way home and it was picture perfect. I will go out in the morning and graph it again on a cold start to be sure but it looks like the O2 may well be my issue!

We have had some issues with the bosch sensors from Carquest on Chrysler products in the past as well... Just the heater resistance though. Had to run OE sensors on them, even though Bosch makes their OE sensors too.... Maybe, just maybe, my factory O2 failed. I replaced it with an inferior sensor and was just adding coal to the fire! We'll see how it goes in the morning but the tracing was 100% better after the sensor swap!

I'll chime in tomorrow to let you know how it goes..

 

Well i havent been able to check my o2 but i did find something interesting with my car. The Coil and all igniton minus the distributer has been replaced. I had a friend of mine take a ride with me and he thought that is was fuel realted not spark. So after some talking we dicided to unhook the TPS sensor and run it in defualt mode. Well it sure ran odd with no TPS but i drove it a good 50 miles with no skip or sputter and it ran great. Now i did test the sensor and it has no dead spot but could it be causeing my issue? Maybe only has a dead spot when hot?