Up until yesterday, I had not heard of a cold start injector either. https://www.yourmechanic.com/article/sy ... t-injector They seemed to be popular with Toyota & BMW up until about 2000. I had 1992 Toyota Paseo but it didn't have one but the Camry and Corolla did.vibrologist wrote:Could be fuel pressure. Could be a vacuum leak that hasn't thrown a code yet. Intake manifold gasket tends to go bad.
It never hurts to clean contacts at the battery and also the ground connections wherever they are.
I never heard of a cold start injector. Everything is figured out by the computer and signaled tot he regular injectors. The injectors could be dirty too.
Another possibility is the ECT- sensor being faulty.
I didn't have any issues starting last night and this morning (40 degrees this morning). I have a feeling you are correct regarding the fuel pressure. I will have to look into a to monitor that. Cold contracts so maybe is doing something to the fuel injector opening or the fuel itself, maybe? I filled the tank up this morning and ordered some BG 44k to clean out the fuel system. It will be getting progressively warmer for the next week, so I can't tell for sure.jolt wrote:Weak fuel pressure when starting, engine temp senor that is off in reading actual temp of engine, or a MAP sensor that is dirty or off in reading air flow to engine would be my guesses given the info you provided. There is no cold start fuel injector. Does the "Check Engine" light work? It should be lighted when the key is in the "ON" position and the engine NOT running. Another guess is a bad or leaky fuel injector.
That could be the problem. I am not saying it is. If you still have the original snorkel put it in. Sometimes the airflow hits the MAF sensor different enough to fool the sensor.and added a CAI
That's a thought. I had the throttle body and intake manifold bored out. I put the CAI at the same time that I installed the bored out throttle body and intake manifold. I finally got the idle settled down in the last month.vibrologist wrote:That could be the problem. I am not saying it is. If you still have the original snorkel put it in. Sometimes the airflow hits the MAF sensor different enough to fool the sensor.and added a CAI
You didn't tell us anything about your mods in the first post, KingKrab65. Showing no pride at all .I had the throttle body and intake manifold bored out.
I couldn't have a sleeper if I went around telling everyone what I did. I think I mentioned that I also had to replace the IAC on the bored out throttle body.vibrologist wrote:You didn't tell us anything about your mods in the first post, KingKrab65. Showing no pride at all .I had the throttle body and intake manifold bored out.
That's the point: at start up it does NOT use the MAF sensor. It assumes it gets a breeze through the factory straw but it really gets a storm through your stove pipe. It's running too lean. You don't get a code because the monitors will only start monitoring when the temperature is up. By that time the computer uses life data and the lean condition is corrected.At start up, when this seems to be happening, what difference would it make to the MAF (or computer) if the sensor was in the standard air intake tube or the larger CAI?
jolt wrote:Google "Open loop and Closed loop". Put it all back stock and it will be happy again. With the custom air flow, you have changed the whole air/fuel curve for the engine and will need a custom computer with adjustable software so you can tweak the air/fuel curve (fuel map) to your custom induction system. I would guess that it would cost more then the car, as it would be a one off design that does not exist for the Vibe.
The 30 degree weather is cold here. This is why I work with eight people from Cleveland, six people from Rochester, and three from Minneapolis.jayoldschool wrote:Get back to me when it won't start at -35C. Mine never had a problem up here...
maybe it works with the E-manage parts by Greddy that are listed there as well.I guess what is confusing about running a CAI is because I got this off of this site: viewtopic.php?f=12&t=19315. Why does this come up if it doesn't work?
That is why putting these things on the car really gain very little because if they made a difference, you have upset the induction system and it will have problems. These things are more of a placebo effect then anything else. The engine is designed to work with the parts it has. You change or modify one thing and you have upset the design, expect problems. Getting more air does nothing unless the system was lacking air to begin with. It is the weak link in the chain type of thing. If you can not get fuel with the air, it just screwed up the system. Fuel and air make power. Air alone does not make power.jayoldschool wrote:There are other posts on this forum that CAI installs have caused issues and have resulted in CEL. I remember one recently where the user finally gave up, converted the car back to stock intake plumbing and put the aftermarket intake up for sale. That's where I would start...