Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1982CAVALIER L4-112 1.8LREPAIR AND DIAGNOSISTRANSMISSION AND DRIVETRAINAUTOMATIC TRANSMISSION/TRANSAXLEDESCRIPTION AND OPERATIONPOWER FLOWNEUTRAL-ENGINE RUNNING
1982 Chevrolet Cavalier L4-112 1.8L
Neutral-Engine Running
1982 Chevrolet Cavalier L4-112 1.8LSECTION Neutral-Engine Running
In this range, all the clutches and the band are released, and the transmission is in Neutral.
With selector lever in Neutral position the manual valve is positioned so that line pressure enters two passages. The first is the reverse, neutral, drive, intermediate (RNDI) passage. RNDI oil is directed to seat RNDI and detent check ball (6) and to the throttle valve where it is regulated to a variable pressure called throttle valve (T.V.) pressure. T.V. pressure increases with carburetor opening and is directed to the shift throttle valve. This valve limits shift T.V. oil pressure from exceeding 90 psi.
Shift T.V. oil is then directed to the 1-2 and 2-3 throttle valves, T.V. boost valve, T.V. plunger and the 1-2 accumulator valve Shift T.V. oil acting on the T.V. boost valve will boost line pressure according to throttle opening. The second is the reverse, neutral, drive (RND) passage and is directed to a land on the 2-3 shift valve.
With selector lever in Neutral position the manual valve is positioned so that line pressure enters two passages. The first is the reverse, neutral, drive, intermediate (RNDI) passage. RNDI oil is directed to seat RNDI and detent check ball (6) and to the throttle valve where it is regulated to a variable pressure called throttle valve (T.V.) pressure. T.V. pressure increases with carburetor opening and is directed to the shift throttle valve. This valve limits shift T.V. oil pressure from exceeding 90 psi.
Shift T.V. oil is then directed to the 1-2 and 2-3 throttle valves, T.V. boost valve, T.V. plunger and the 1-2 accumulator valve Shift T.V. oil acting on the T.V. boost valve will boost line pressure according to throttle opening. The second is the reverse, neutral, drive (RND) passage and is directed to a land on the 2-3 shift valve.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.