I need help! After idling normal for 10 seconds the idle starts to increase and goes really high. After revving the idle up (higher then it is) the idle returns to normal for 10 seconds and then goes up again. I have a new O2 sensor, new spark plugs and wires, and my timing is normal. Any ideas?
Note: I never let the idle peak out when it' going up.
I am lost is it a E16-i or a E16s (carb) if you have the throtle body injected model then look at the idle air control it is located on the back of the body. Check it to ensure a it works and b it is clean and not sticking also I had a problem with my ecu in my 87 when I swapped out to a different one alot of my issues went away to bad my leaking fuel injector lol
If its a carb, you can adjust it with a screw on a valve in front. Of course the up and down thing may not be solved with an adjustment. You might have a vacuum leak somewhere.
Probably not your problem but, when my carb was acting up, the car would die when it was warm, it was a vacuum leak, so I found it and fixed it. Then it would die when I shifted from 1-2, 2-3, and going up/down hill, didn't figure it out until as I was checking things out I accidently leaned on the carb, whoa!, suddenly the car was acting different, the carb was loose. Of course I just went ahead and replaced it with a weber.
Well its a Carb, not the California Style I had mentioned earlier. (Other 49 States) The problem I found was with the vacume lines not being hooked up correctly. After I made all of the vacume lines per correct, not it has a different problem.
When the engine is cold the idle is high. If you rev up the engine the RPM's stay at the highest place they were when I rev it up. This only lasts until the car is gets warmed up. After it's warm it acts fine. Any idea's?
The only thing I can suggest first is: There is a fast-idle screw on your throttle shaft, left side of carburetor. It may be capped with a plastic cap or it may be exposed. It is at the 10 o'clock position (As you view it) on the end of the throttle crank mechanism and easily seen. With the engine off, pop the cap (If it's there), get a small flat screwdriver, crank the throttle open enough to where you can access the screw easily and turn the screw clockwise, as if you're screwing it in. Try one full turn and start your engine, noting if the fast idle drops. Ideally, the best fast idle is about 2,000 rpm, so repeat as necessary in order to get 2 grand. Give it a shot and lemme know... --RT
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Later, taters; Off to a better place. Catch me there!
87 Sentra Idle Problems
Linear Mode
