2007 Camry SE

[Taylor95]

Luckily I have the 4 cylinder version. Less lucky is that I need to solve a misfire problem on cylinders 2 and 3. Hopefully it is the spark plug or coil.

I would like to look into the steering pop pump thing... is the spring hard to get to? I may d ok it if I ever need to service the pump.

[iikhod]

PSA: Make sure it is an ignition problem and not a fuel injector acting up.
I went trough a lot of head scratching and replacing parts not necessary trying to solve intermittent misfires in one cylinder. Finally found the problem when one of the injectors died completely.

[roosterk0031]

My boss had a 03, 4 cyl 5 speed, his son drives it now, I'd say just replace all 4 coils based on his experience with it, Same for the injectors when they fail. He's done all 8 coils & injectors spread out over the last 2-3 years.

All my kids drove a 98 Stratus without PS when it failed. Just disconnect it and get most of the oil out, loop the hoses and see how it drives. I've deleted the PS in my cobalt just to try it, but it was simple as pulling a fuse.

[Taylor95]

I am fairly certain that it is an ignition related problem. The coils are all original and the spark plugs are going on 40k miles. Hopefully swapping these out will increase my mpg too However the ECM did not specify where the problem was coming from.

[MetroMPG]

Another PSA... I've driven several small cars with PS deletes (Insight, Miata, Mirage), and steering effort isn't significantly higher than my Metro/Firefly with factory manual steering. (Higher tire pressure helps.)

But my dad's Camrys are total brutes to steer without assist.

[serialk11r]

Originally Posted by MetroMPG

But my dad's Camrys are total brutes to steer without assist.

Yea that's why I suggested cutting the flow control spring. With what, 1700lbs over the front axle, a bit of assist is going to be really nice to have. I successfully muscled my PS disabled MR2 wheel but I will admit it is kind of unsafe if you need to do a fast maneuver since the fluid restriction really slows you down. That's probably more like double the resistance but it was really way too heavy.

[Taylor95]

So I'm still trying to find the source of the cylinder misfires. I replaced the coils and plugs but that did not fix the problem. I suspect the problem is the connectors because the last person who worked on them broke most the clips off and used zip ties to keep them on the coils.

[roosterk0031]

Getting a code for which cylinder is misfiring?

Boss's had a miss fire, had shop diagnose and replaced it, then another replaced it himself. Doing all 4 upfront would have been cheaper than one shop visit. On the injectors I think it was telling him which cylinder so just replaced one, not much later another one went, that time replaced the other 3.

I chased a occasional LTFT (long term fuel trim) issue on my Cobalt causing flooding, did coils, injectors, O2, still randomly come back, one day funny noise when got to work and it was the evap purge valve squeeling, replaced it and good for a few month. Came back, replaced it a again with different brand part it it's been good for a while. I really didn't think enough air could leak through that hose to max out fuel trims. Code was always a lean code even though the car was flooding itself.

[Taylor95]

Cylinders 2 and 3 are misfiring. I also got a P0300, which is just multiple misfires detected. I'm hoping that changing the connectors fix it. I don't really want to mess around with injectors or sensors at the moment.

[Taylor95]

I replaced all of the connectors on the Camry. That seem to greatly reduce the problem, however cylinder 2 still misfires under load. The only thing that I can think of is that it may be the injectors, though that doesn't make sense that it only misfires under load. The injectors are original with 190k miles on them, so it probably isn't a bad idea to change them out anyway.