Question about 2002 Toyota MR2 Spyder

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My vehicle is knocking now in the engine...i was shifting from third to fourth coming onto base and it just started..it is LOUD. If i lean the vehicle to the left and while gettin in the left lane it goes away but if i do the opposite and go to the right it gets even louder...and only at certain points when gas is given it goes away but also if around 1000rpm to 1300rpm it is LOUD...i think its a valve but of which one i dont know

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Normally a tapping sound indicates a valve and a knocking sound is the bottom end..have you checked your oil???

Posted on Sep 11, 2010

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Wheel bearing thats all not the end of the world,engine perfect ,ask one of the reme boys to have a look for you

Posted on Sep 11, 2010

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My 2005 Pontiac Bonneville GXP will not shift into 4th gear I was to it was a fourth gear band but is that the only problem that will cause itI'notto shift into 4th gear


Which transmission does yours have 4T65-E or 4T80-E ?

4T80-E
No Fourth Gear

Checks

Causes

1-2 Shift Solenoid Valve
?€¢
Inoperative
?€¢
Debris
?€¢
Pinched wires

3-4 Shift Valve Bore Plug

Misassembled

4th Band

Burned, slipping, missing

4th Servo Cover

Cracked

4th Servo Pin

Broken, seized

4th Servo Piston

Damaged

4th Servo Seals

Rolled, cut or damaged
4T65-E
Slipping or No Fourth Gear
Slipping or No Fourth Gear Checks
Cause

DEFINITION: A large engine RPM increase is noted in fourth gear, Drive range, with little or no vehicle forward speed increase. First, second, and third gear operation are normal. Shifts into fourth gear are soft or do not occur. Fourth gear ratio is 0.705:1.

Automatic Transmission Fluid Level
Low fluid level

Transmission Main Line Pressure
Low transmission main line pressure

Oil Filter Assembly
• The oil filter assembly (100) is missing, plugged, or damaged.
• The oil filter seal assembly (101) is missing or is damaged.

Control Valve Body Assembly
• The 3-4 shift valve (362) or the 4-3 manual downshift valve (360) is stuck or binding.
• Debris is found in the passages of the control valve body (301) or of the control valve body spacer plate and gasket assembly (396)

Case Cover Assembly
Distortion or damage occurs at the manual valve (404) or at the case cover (401), causing PRN oil leak.

Driven Sprocket Support Assembly
A plugged third clutch oil passage in the driven sprocket support assembly (609)

Fourth Clutch Assembly
• The clutch plates (500-502) are worn, damaged, or misassembled.
• A missing or not seated fourth clutch spring retaining ring (601)
• A damaged spring assembly (602) or piston (603)
• Worn or damaged fourth clutch piston seals (604, 605)

Third Clutch Sprag Assembly
• The sprag (720) was misassembled or backwards on the inner race (661).
• A damaged third clutch sprag assembly (653, 661, 719-721)

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1 Answer

Transmission make loud sound when put it in revers


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PO325 code


Error Code: P0325
Description:
Knock Sensor (KS) 1 Bank 1 - Circuit Malfunction
Possible Cause:
Irregular rpm.
Drivability problems.
Loss of power.
Engine damage.

Wiring.
Poor connection, short to earth, short to positive, open circuit.

Knock sensor improperly torqued.
Knock sensor.
Engine control module (ECM).

Possible Solutions:
Torque Knock Sensor 1 to specifications.
Check the resistance of the knock sensor (compare it to factory specs).
Check for broken/frayed wires leading to the sensor.
Replace the knock sensor.
Check Knock Sensor 1 and Knock Control.

Caution:
This feature search for unusual (spontaneous) combustion. The sensor detects unusual vibrations and based on that it generates a voltage. Is this voltage outside a certain limit a DTC will be set.

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1 Answer

Electronic pressure control solenoid circuit p1745. Check engine light on 2000 ford escort, 4cl, automatic. Advance auto told me it was a dealer part but I can't find it on any of the ford websites?...


Here is what the service manual says about the EPC solenoid, the processor looks at allot of different inputs to command the solenoids, such as Throttle Position Sensor, Vehicle Speed Sensors, Transmission Range Sensor and RPM signal, The PCM controls the shift patterns for the transmission. Electronic Pressure Control (EPC) Solenoid
The electronic pressure control (EPC) solenoid is located on the main control valve body and is controlled by the PCM. The EPC controls line pressure used to apply and release clutches and bands in the transmission.
The 2-3 shift solenoid is located on the main control valve body and is switched on and off by electrical signals from the PCM. The 2-3 shift solenoid activates the 2-3 shift valve which controls the automatic shifting between second and third gear. Second gear is established when the 2-3 shift solenoid is switched on. The 2-3 shift solenoid is switched off when vehicle speed increases and requires a second to third gear upshift.
The 3-4 shift solenoid is located on the main control valve body and is switched on and off by electrical signals from the PCM. The 3-4 shift solenoid activates the 3-4 shift valve which controls the automatic shifting between third and fourth gear. Third gear is established when the 3-4 solenoid is switched off. The 3-4 shift solenoid is switched on when vehicle speed increases and requires a third to fourth gear upshift.

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1 Answer

2002 BLAZER WHEN STARTING VEHICLE OIL PRESSURE GAUGE READS HIGH, KNOCKING COMING FROM ENGINE, WHEN ACCELERATING IT GETS FASTER & FEELS LIKE LOOSING POWER WHEN DECELERATING


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1 Answer

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