How does the cold start injector work on a Toyota?
The cold start injector most certainly works at temperatures above 32deg. The cold start injector time switch provides a ground circuit for the injector that allows the injector to spray fuel during cranking to help start the engine. The time it allows the fuel to spray is based on what the temperature is.
What should temp be for cold start injector?
Before you can properly diagnose a problem you need to have at least a decent understanding of how what ever it is works. The cold start injector most certainly works at temperatures above 32deg.
Why does my Honda CRV Rattle at start up?
At cold start-up, the engine rattles loudly for about two seconds. The possible cause could be the variable valve timing control (VTC) actuator is defective. Replace the VTC actuator.
What do you call the cold start valve?
The cold start injector, also referred to as the cold start valve, is an engine management component found on many road going vehicles.
When do you use a cold start injector?
Electronic cold start injectors, sometimes referred to as cold start valves, have been in use by Bosch and other fuel injection makers since the early 1960s. They are there to provide cold-start enrichment by injecting a small shot of fuel when the ambient temperature is low (usually below about 55 degrees).
The cold start injector, also referred to as the cold start valve, is an engine management component found on many road going vehicles.
Where is the cold start valve on a Mercedes?
Most cold start valves are in the intake manifold somewhere. The Mercedes V8s usually have the valve on a separate extension near the left front of the engine along the pipe that carries the idle air. Volkswagen and Audi Cold Start valves usually reside at one end of the manifold.
How to replace the star injector time switch?
To replace the star injector time switch, drain the coolant, unplug the switch electrical connector and unscrew the switch. Be sure to coat the threads of the new switch with Teflon tape to prevent leaks.
The cold start injector most certainly works at temperatures above 32deg. The cold start injector time switch provides a ground circuit for the injector that allows the injector to spray fuel during cranking to help start the engine. The time it allows the fuel to spray is based on what the temperature is.
Why does my 2.7L engine not start when hot?
I honestly have this exact same problem with my 2.7L. I can guarantee that something is becoming heat soaked when the engine sits for 5-25mins after being at operating temp.
Why does my Toyota Prius keep hard starting?
Well, after doing a lot of thinking i finally figured out my OUT OF THE BLUE HARD STARTING. It was my Fuel Pressure Regulator. At first i thought it was my ignition coil because the hard starting was intermittent and i ran a test on it and the Primary Resistance was way off spec, but the Secondary Resistance was spot on.
What should I do if my Toyota 4Runner wont start?
You probably need new starter contacts, its a pretty comon issue and its really easy to change them out, it actually takes longer to pull the starter than it does to change the contacts. 1997 3.4l SR5 5spd 4WD E-locked.
How does a fuel pressure regulator work on a Toyota?
As soon as the key moves to the run position there is no longer a power supply to the injector. The fuel pressure regulator is a spring loaded valve that allows fuel to return to the tank once the set pressure is reached.
Can a bad fuel pressure regulator cause flooding?
Unless it is leaking. then it can cause flooding. But usually if that is the case, setting overnight it would usually start OK, because the fuel would have mostly evaporated and dissipated by then. You may also have a weak fuel pump so then a bad fuel pressure regulator would be that much worse. IF everything is OK now then let it be.
What causes a Toyota car to not start?
Battery – If the connections on your battery become corroded, there is no longer a connection to the rest of the car. This can keep you from starting. Clean the posts and try to start the car.
What should I do if my idle speed changes?
The next time idle lopes, take the handle of a screwdriver and tap on the Idle Air Control valve. If the idle speed changes when doing this replace the IAC valve. What system does this truck use for “cold starts”? Some use an extra fuel injector in the throttle body and perhaps this injector is not closing properly and dripping in some extra fuel.
What to do if your fuel pump won’t start?
Use a circuit tester to check all the electrical connections to the fuel pump. Turn the key to ON. If you see a current, then it is not the pump. If there is no current, check the fuse.
Do you need to remove fuel injectors on Toyota pickup?
^Google search “toyota pickup service manual” and it will be the first link. It will probably have it in there somewhere. Is it 22R-E? If so, they are buried pretty deep, you’d probably be in for a couple hours to get them out. I say don’t fix what ain’t broken. On either the 22RE or the 3VZE you must remove the intake manifold plenum.
Why does my Toyota pickup engine go away after 20 seconds?
Yesterday morning when i fired up my truck it started fine but idled very rough (engine was shaking very roughly which caused most of the truck to shake) but it went away after about 20 seconds of idling. it has done this a few times in the past month or so, but it always goes away after a few seconds.
Why does my Toyota Prius not start up?
If you get no lights and your battery is working, the ignition switch could be to blame. If you get dash lights, then turn the key to start to see if the lights go out on the dash. If the lights go out, your ignition switch is okay. Starter Connection – Corrosion on the starter can keep the car from starting.
What makes a 1995 Camry not to start when hot?
Forgot to mention that, the Camry is 1995, unlike modern ignition coils one for each cylinder; it has a central distributor and delivers high voltage to four spark plugs through a set of wires. Thanks. I have a feeling that your crank position sensor (or camshaft position sensor in some cars) is faulty.
Why does my Toyota 4Runner crank but not start?
After the timing belt was replaced the truck would crank but would not start. After months of them trying to fix the problem by replacing unnecessary parts, they brought the truck to my shop. I figured the problem out in about 20 minutes. I hope you enjoy the video! please like, comment and subscribe to the channel! Loading…
What kind of car won’t start when hot?
Won’t Start When Hot – SOLVED! I am so damn happy! I was here a couple years ago with a problem I just could not get solved. My 1996 2.4L Tacoma would not start when hot. After operating at temp, and leaving it for 10-20 minutes it would not start. It cranked hard, but would not start.
Why does my ttora not start when hot?
If I start it when cold or not up to operating temp it fires right away. I’m just thinking that the coolant is leaking back from the hot head to the coolant temp sensor, heat soaking it and causing it to run a rich start up. I’ve checked the sensor and all the resistances seem to be within spec.
Where is the STJ pin on a 1987 Toyota 4Runner?
Owners of 1987’s, when you get a chance, pls check is you have a wire connected to STJ pin of your ECU and let us know what color. UNFORTUNATELY, THIS IS MISSING THE MOST CRITICAL SPEC: RESISTANCE BETWEEN STJ AND GROUND.
Why does my Toyota pickup engine stall when warm up?
When the engine gets warmed up and im drivin everytime from 1st to 5th gear it wants to bog when I accelerate ive changed the fuel filter spark plugs wires distributor cap and even put cleaner in my gas tank but it still continues to bog down Runs fine, then when warm it idles rough until it stalls intermittently.
Why does my Toyota truck stall at red lights?
Have not fixed problem yet. its fine sometimes then after warmed up it will stall at red lights re start but no idle able to drive it home but continues to stall. one time it would not start back up untill next morning. this is the first time ever with this problem
What kind of problem does my Toyota truck have?
I have a 1988 Toyota (4 cylinder) Pickup truck, with a very intermittent starting problem, that is driving me crazy. It has had the starting problem for over a year now. Normally is starts easily, within one second with the starter motor, no gas needed, and it starts smoothly.
Why does my car not respond to the gas pedal?
Electronic throttle controls module faults are one of the most common issues when dealing with a unresponsive gas pedal. This is a sensor that reads how far you have pressed the gas pedal down and outputs that information to the computer which controls the throttle. This information is also used in computing ignition timing and other components.
Before you can properly diagnose a problem you need to have at least a decent understanding of how what ever it is works. The cold start injector most certainly works at temperatures above 32deg.
When does a truck run rough on a cold start?
It generally happens in the morning or when the truck has sat for a few hours. It starts just fine, but shakes and idles rough untill I press on the accelerator, then seems to run/idle just fine. I have repalceded fuel filter, plugs and cleaned the MAF and IAC at regulare service intervals. One last note, I may be loosing coolant.
Why is my cold start valve leaking so much?
He said its my cold start valve and that alot of 22re engines have this problem. He told me that the valve would get weak over time and start to leak constantly because even when you shut the engine off you still have 40psi of fuel pressure in the lines. That combined with a leaking valve = starting problems and flooding out.
What was the problem with the Toyota 22RE engine?
There was an internal bulletin for Toyota factory technicians back in the mid 80’s about a similar issue with 22RE engines. The issue was an internal programming problem with the ECU.
What should I look for in a 22RE engine?
I get dozens of calls every day with people trying to diagnose various issues with their 22R / 22RE / 22RTE engines. Everything from hard start issues, rough idle, mis-fire, lack of power….blah, blah, blah. Since there are a few hundred things it CAN be, I recommend starting with the basic stuff first.
What should the idle speed be on a 22RE?
We also recommend going a hair tighter than the factory says too. .007” on the intake and .011” on the exhaust side. If it’s your first time adjusting valves, TAKE YOUR TIME AND TRIPLE CHECK YOUR WORK. It’s not rocket surgery, but if it’s not done correctly, things can get ugly quick. Rough idle? Engine shakes at idle? Low idle?
What to do if your Toyota won’t start?
Battery – If the connections on your battery become corroded, there is no longer a connection to the rest of the car. This can keep you from starting. Clean the posts and try to start the car. Additionally, the battery may be dead. Take a battery tester and test the cranking amps to see if they are weak.
Why is my Toyota Prius not starting properly?
At first i thought it was my ignition coil because the hard starting was intermittent and i ran a test on it and the Primary Resistance was way off spec, but the Secondary Resistance was spot on. So beings that it was out of spec i would replace it anyway even if it wasn’t the cause of the problem.
Why does my car not start when I Turn on the car?
Cold Start Valve – If the engine is cold and the cold start valve is bad, it can keep your car from starting. Flywheel or Ring Gear – Worn teeth on these gears can keep your car from starting. They will screech when they are engaged. ECU or MAF – Your car’s computer may be bad.
Is there a cold start injector on a 5vzfe engine?
I haven’t come across a dedicated cold start injector on the 5vzfe engine…but I know the 3.0L 3vze engine had one. Another thing is that the MAF sensor may be dirty and could probably use some cleaning with some MAF sensor cleaning spray you can pick up at the auto parts store fer under $10.
What causes rough idle on a cold start?
I have been experiencing random rough idle on cold start. It generally happens in the morning or when the truck has sat for a few hours. It starts just fine, but shakes and idles rough untill I press on the accelerator, then seems to run/idle just fine. I have repalceded fuel filter, plugs and cleaned the MAF and IAC at regulare service intervals.
Why does my car sputter when I Turn on the engine?
The fuel filter ‘s job is to filter the fuel going to the fuel injectors and then enter the engine. A clogged fuel filter can cause the engine to get too low fuel pressure or cause a clogged fuel injector. Low fuel pressure will cause the engine to run very leanly, and therefore it may cause the engine to sputter.
Why does my Tacoma truck start then die?
Turns out it was a security issue with the key sensor. Started fiddling around with the key and noticed a really small rubber button on the key right next to where the key goes in to the plastic part. I pushed it in a couple of times. Cranked right up. Not sure if that was really the issue or just coincidence.