Need a little help if you can.
2000 3rz 278k
Hard to start only in cold weather, no probs in the summer. Once warm even in cold weather itll start right back up like it should unless it cools down completely, ie 4-5 hours after last shutoff.
I have the 2 coil pack ignition, one is less than 2 years old (new from toyota when replaced), one is original, coil wires are under 2 yo again from toyota. Plugs are less than a year old, fuel injectors just rebuilt, pressure reg, new as well. Starter original, yellow top optima less than 2 yo.
Turn key and truck cranks strong, I just stay on the key till it starts, anywhere from 1-5 minutes of cranking. It cranks strong the whole time, acts like it wants to start after 10 seconds or so but just stays at a constant sputter, it will die if I dont stay on the starter, after a while longer it will begin to want to start more than not, but still not enough to let off the key, eventually it gets to the point where gently giving it throttle helps it fully fire and run. It runs rough for a minute then gets to the point where it runs/idles normal for a cold start for a 3rz.
Is my IAC sticking? Can I clean it, just replace it etc???
Im about to replace the 1/4 coil pack, the one that is original, im consistently getting p0301 and p0303 but the 3/2 coil pack and all the wires are under 2 yo. So i could understand maybe the cyl 1 misfire is the age of the coil, but the cyl 3 misfire when all else is relatively new? Leads me to think maybe the IAC is sticking. Would that cause the misfires? But why only on cyl 1 & 3?
Fuel pump has been ruled out as trucks runs like new once warm at all speeds in all conditions. Originally thought maybe fuel pressure was leaking down but ive done the injectors and regulator in the last month because of that and still have the issue (hard to start). Problem started last fall and has progressively gotten worse, now even harder to start in cold 25-40* and recently hard to start in warmer 40-60* temps when it used to only have problems in the colder range.
Thoughts?
Sorry if this is cluttered. Thanks.
2000 3rz 278k
Hard to start only in cold weather, no probs in the summer. Once warm even in cold weather itll start right back up like it should unless it cools down completely, ie 4-5 hours after last shutoff.
I have the 2 coil pack ignition, one is less than 2 years old (new from toyota when replaced), one is original, coil wires are under 2 yo again from toyota. Plugs are less than a year old, fuel injectors just rebuilt, pressure reg, new as well. Starter original, yellow top optima less than 2 yo.
Turn key and truck cranks strong, I just stay on the key till it starts, anywhere from 1-5 minutes of cranking. It cranks strong the whole time, acts like it wants to start after 10 seconds or so but just stays at a constant sputter, it will die if I dont stay on the starter, after a while longer it will begin to want to start more than not, but still not enough to let off the key, eventually it gets to the point where gently giving it throttle helps it fully fire and run. It runs rough for a minute then gets to the point where it runs/idles normal for a cold start for a 3rz.
Is my IAC sticking? Can I clean it, just replace it etc???
Im about to replace the 1/4 coil pack, the one that is original, im consistently getting p0301 and p0303 but the 3/2 coil pack and all the wires are under 2 yo. So i could understand maybe the cyl 1 misfire is the age of the coil, but the cyl 3 misfire when all else is relatively new? Leads me to think maybe the IAC is sticking. Would that cause the misfires? But why only on cyl 1 & 3?
Fuel pump has been ruled out as trucks runs like new once warm at all speeds in all conditions. Originally thought maybe fuel pressure was leaking down but ive done the injectors and regulator in the last month because of that and still have the issue (hard to start). Problem started last fall and has progressively gotten worse, now even harder to start in cold 25-40* and recently hard to start in warmer 40-60* temps when it used to only have problems in the colder range.
Thoughts?
Sorry if this is cluttered. Thanks.