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Re: 1999 nissan se 2.0
Clutch disk may have runout 1.Check the clutch disc contacting surface of the flywheel
for damage and wear. Replace the flywheel if excessively damaged or
worn.2.Check the clutch disc contacting surface of the flywheel
for runout.3.Check the ring gear for damage, crack and wear, and
replace if necessary.
To inspect you better take it to service station 1.Remove the transaxle and
clutch.2.Remove clutch assembly
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When your engine is running at say 1200 rpm, the transmission is at zero speed with the clutch depressed. When you engage the clutch the first gear is still at zero speed trying to engage with a 1200 rpm crankshaft. In a normal transmission, they have a "synchronizer" which speeds up the gear to match the speed of the crankshaft so the gears mesh smoothly.
When you turn off your engine, the crankshaft is at zero rpm so it can go into gear with the zero rpm transmission. Bottom line...you have a problem with your synchronizer on your transmission. If you are lucky...a transmission shop could fix it without an overhall. But it needs to be diagnosed because it doesn't sound good.
Probably the wrong place to be asking this question. If you don't have knowledge of the workings of any vehicle, then you need to find repair shop. If you have friend that works in repair shop, ask him. It sounds to me that you have lose fitting or knuckle where the rod attaches to gear box. It definitely needs to be check as soon as possible before you lose your steering.
The stepper motor is not replaceable on this auto. The ECM and crank sensor controll the idle process for this Nissan. First change your crank position sensor you know the cars computer is ok. This is where i would start. Once this has been accomplished if this did not fix your problem.please return and ask me for me and i will go threw the Idle Air Relearning Process with you. I REPEAT DO NOT DO A RELEARN PROCESS WITH THIS FAULTY CRANK SENSOR ENGINE CAN RACE OUT OF CONTROL DAMAGING YOUR ENGINE AND FRYING YOUR ECM WITH OVER VOLTAGE> Your crank sensor is picking up the wrong signals telling the engine it is rotating at a completely different RPM is what is wrong and that is the reason for the radical RPM and transmission shifts. THe trans is programmed to shift at certain RPMs but it cant change right because the crank sensor it telling it it is at 1100 rpm and its really at 2200 rpm. it is simple computer network failure. Change this and get back to me if you have any other questions
Possibly the "Mass airflow sensor". I had a similar problem, basically the car behaved like it didn't have a turbo and was really slow. Unfortunately the Mass airflow sensor is expensive, about AU$800. Only failed once several years ago. Hope this helps.
the dash voltage egulator probably went bad. First,check the battery & make sure you have 12 volts,not running. Check it again running & you should see about 14.5 volts. If that's good,I'd replace the guage assembly.
With the ac, sounds like you definitely have a short with the ac electrical wires. Have a mechanic check that out. 2. The wiring for the dashboard gauges may have tears or something is causing high resistance in them or you may need a new dashboard itself. Have that checked too.
As far as the brakes when you trying to change gears, what do you mean brake lock wont open? Finally with the RPM, I dont think your dashboard gauge is working correctly so you may need that replaced also.