Hey guys, I have an Accord that has been hesitating mostly when cold and at low rpm’s and speed under 30mph. Idles normal. Once warmed up, it runs/drives great. Once warmed up and then if turned off, get back in and it will hesitate and stumble under same conditions. No codes are present. I’ve replaced EGR valve, TPS sensor, IACV, MAP, plugs, wires, new injectors, and fuel pump (screen is clear). It stumbles like it’s not getting fuel and if I floor it, it will rev up and go. Don’t know what to try next-clean throttle body, buy new distributor/cap? Any ideas? Thanks
OEM parts were purchased btw. The culprit was a faulty upstream oxygen sensor. Hope this help someone else. I received better advice from owners in the Honda forums.
Thanks for posting back with the fix.
Fuel pressure regulator, fuel dampers, air flow meter, the distributor, ignition system, vtc solenoid, fuel rail cleaning was important
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Fuel pressure regulator was replaced, forgot to add. Thanks for the reply. I’ll try distributor next and research the VTC solenoid. This is throwing me for a loop.
Still having issues. Replaced distributor, new injector seals, air filter, tried another ecm-no luck. Fuel rails were cleaned.
The car hesitates now when it’s mostly warmed up. Especially on the highway around 2500 rpm’s at 70-80mph. If I accelerate alightly, it does ok. If I hammer it down full throttle, it kicks down and goes. If I press accelerator in normal medium foot pedal driving, it hesitates and seems to act like it’s not receiving gas. But it never stalls out. I slam down on the accelerator and it goes fast. Don’t see or hear vacuum leaks. Spark is good. Fuel lines look good from front to back. Need some direction from here. No codes.
Remember this advice, your problems won't go away if you don't buy OEM parts