hi, I've got a problem with my car's idle rpm not working properly. When I have a ride around for half an hour (when the motor gets warmer) it's more obvious. The problem exactly is, when I leave the throttle, and get ready to brake, and the gear is at neutral, the engine RPM goes below 700-800 until 100 even rpm, and generally the motor stops.
I need serious advice.
Thanx for care.
nissan s13 200sx idle problem
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alperileri
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if you are not recirculating your blow off valve, this will happen.It is almost definitely an issue with the car getting too much fuel and not enough air after you let off the gas.If you have an aftermarket blow off valve, make sure it recircualtes.also give us some details on parts you may have...especialy related to fuel tuning
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alperileri
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I'm assuming you have a CA18DET? If it's stock, it most likely doesn't even have a BOV. Try cleaning out your AAC valve. If you look at your intake manifold, on the right side there is an assembly of a couple cylinders and plugs bolted right to the manifold. Disconnect the wires and hoses to this assembly, and undo the 3 bolts holding it to the manifold. Have some RTV on hand in case you mess up the gaskets. Take this assembly all apart, being careful not to lose the tiny springs and pins that are in it. Clean the whole thing thoroughly with brake cleaner or something, let it dry, and put it all back together. That helped my idle smooth out a lot.
You could also check your timing. You'll need a timing gun and a spark plug wire. Pull the coil pack out of cylinder #1, attach the booted end of the plug wire to the plug still in the cylinder, pull the red rubber boot off your coil pack, and tape the other end of the plug wire on there so that it is touching the metal pin at the end of the coil. Hook your timing gun to your battery, and idle the car. You should now have a coil pack laying in the engine bay with a plug wire running from it to the spark plug. The timing gun clamp should be clamped around the plug wire. Wait until it gets to its warm idle (850 +/- 50), and set the timing to the next to last notch on the right on the crank pully. Adjust the timing by rotating the Cam angle sensor.
How's it idle when warm? Does it idle smooth at 850ish? If not, you may need to adjust your idle. Disconnect the aforementioned AAC valve, and turn the 10mm bolt at the back of the whole assembly you cleaned earlier until idle reaches 850. One way you turn it lowers the idle, the other way raises it.
I was having similar problems, and did all this stuff this past weekend. My car idles very smooth when warm now. When it's cold, it still jumps around a bit, but as I understand it, most CA's do that. Also, just make sure your car is in tune.
You could also check your timing. You'll need a timing gun and a spark plug wire. Pull the coil pack out of cylinder #1, attach the booted end of the plug wire to the plug still in the cylinder, pull the red rubber boot off your coil pack, and tape the other end of the plug wire on there so that it is touching the metal pin at the end of the coil. Hook your timing gun to your battery, and idle the car. You should now have a coil pack laying in the engine bay with a plug wire running from it to the spark plug. The timing gun clamp should be clamped around the plug wire. Wait until it gets to its warm idle (850 +/- 50), and set the timing to the next to last notch on the right on the crank pully. Adjust the timing by rotating the Cam angle sensor.
How's it idle when warm? Does it idle smooth at 850ish? If not, you may need to adjust your idle. Disconnect the aforementioned AAC valve, and turn the 10mm bolt at the back of the whole assembly you cleaned earlier until idle reaches 850. One way you turn it lowers the idle, the other way raises it.
I was having similar problems, and did all this stuff this past weekend. My car idles very smooth when warm now. When it's cold, it still jumps around a bit, but as I understand it, most CA's do that. Also, just make sure your car is in tune.
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alperileri
- Posts: 4
- Joined: Tue Mar 30, 2004 1:55 pm
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- Contact:
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alperileri
- Posts: 4
- Joined: Tue Mar 30, 2004 1:55 pm
- Car: music cars
- Contact:
Turbo Thing
Hi, I'm new to this car and heard that, if the turbo joins the action at something over 3000 (like mine does it at 4000), than the turbo is not working properly.
is it true ?what can be done if it's true ?
thanx very much,
alper
is it true ?what can be done if it's true ?
thanx very much,
alper
try http://www.sxoc.com with these questions. It's a UK Nissan board, and they have a lot more experience with the CA18. There's only a handful of us on this board.