20 Most Recent 1994 Chevrolet Corvette - Page 3 Questions & Answers

i replaced my battery and had sucess

anytime you remove a distributor on any car its wise to re check timing so yes re time it

You need a scan tool to hook up to the car and se what is going on.

check the pickup coil in the dist

You have a ruptured fuel pressure regulator diaphragm.The gasoline will leak past the piston rings and end up in the oil pan. You need to change the oil.

You need to reset the low tire pressure fault waring, this can be a defective sensor. Read the procedure below. Replace sensors as required.Clear DTCs by grounding DLC (under dash in front of driver) terminal 6 to 5, three times in ten seconds.Receiver/control module will confirm that its memory has been cleared by illuminating both the "L0W/FLAT TIRE" and "SERVICE LTPWS" lamps at the same time. Both lamps will remain ON until the ignition is turned to the OFF position and then back to "ON".RF sensor MUST be color code BLUE.If you still get codes, read out the DTCs by connecting DLC terminal 6 to 5 to flash LTPWS. Look for 23, 33, 43, 53 or 24, 34, 44, 54. Right front is LOW TIRE DTC 53 and WHEEL SENSOR DTC 54.All codes will be preceded with DTC 12. DTC 99 is possible receiver fault.

There are two bolts in the front and two bolts in the rear, remove them and then disconnect any wiring connectors and pull the seat up and out of the car, careful not to damage the dash or body panels.

Coolant temperature sensor is bad. Telling computer that the engine is still cold and over fueling as if it were a cold engine.

First thing I look for in a case like this is the common old vacuum leak. While the engine is fairly cold and running, take a can of spray carb cleaner andspray near known vacuum intersects or hose connections.The engine idle should change audibly if a leak is present. When a vacuum hose gets a bad split or tear,the engine performance goes wacky. Also look for a loose connection of the air intake hose(large one) or right where the connection is made to the intake.These engines are REALLY touchy where connections are concerned. don-ohio

You just told us

PCV Hose

Take it to an auto parts store
or dealer if not at parts store.

You will have dry all ignition components ... You have a distributor that you can open? Get a drying agent from your auto parts store (spray can) and spray all high voltage wires. Next sunny day, roll the Vette into the sun and leave the hood open all day.

I used to work at a GM dealer and we had this problem several times witht these cars 80% of the time it was the coolant temperature sensor 10% of the time it was Cam sensor and 10% of the time it was the crank sensor. I wish I could be more specific but with out actually performing test its hard to say. It is a common problem with these vehicles.

Check out the crankshaft position sensor if there is no spark.
TESTING NOTE: The best method to test this sensor is by using an oscilloscope.

1. Visually check the connector, making sure it is connected properly and all of the terminals are straight, tight and free of corrosion.
2. If a Tech 1® or equivalent scan tool is available, scan the CKP or RPM parameter while cranking the engine. If signals are indicated, the CKP sensor is functioning properly.
3. If the scan tool is not available, use a digital multimeter set to the ohms setting, then check the resistance across the sensor terminals. The resistance should measure about 500-1200 ohms at about 70°F. The resistance will vary with temperature. NOTE: This test must be performed with the ignition ON and the engine OFF.
   
4. Using a thin piece of steel, check the tip of the sensor to see if it is magnetized.
5. Using a digital multimeter set to the millivolts AC scale, connect the test probes to the sensor.
6. Rotate the reluctor ring to activate the sensor signal. Use the starter to crank the engine.
7. Voltage should be seen as the reluctor ring is rotated. If the reluctor is rotated quickly, a signal of at least 200 millivolts AC should be seen.
8. If the sensor and circuits are functional, the PCM may be faulty.

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REMOVAL & INSTALLATION VIN J Engine

1. Disconnect the negative battery cable.
2. Raise and safely support the vehicle.
3. Unfasten any necessary retainers, then remove CKP sensor shield.
4. Detach the CKP sensor electrical connector.
5. Unfasten the CKP sensor mounting bolt, then remove the sensor from the vehicle.
6. If equipped, remove the sensor shim. Fig. 1: The CKP sensor is mounted in the lower right side of the engine block, between cylinders 4 & 6, just above the oil pan
   To install:
   
7. Lubricate the CKP sensor O-ring with clean engine oil. If used, install the sensor shim.
8. Position the CKP sensor and install the mounting bolt. Tighten the bolt to 71 inch lbs. (8 Nm).
9. Attach the sensor electrical connector.
10. Install the CKP sensor shield, securing with the retainers as necessary.
11. Carefully lower the vehicle, then connect the negative battery cable.

check the fuel pressure should have at least 40 psi

Check the vacuum hoses and Map sensor.