Chevy Lumina EGr Code And Intake Sensor Location
Problem with my 1997 CHEVY LUMINA CHECK ENGINE LIGHT Codes = EGR VALVE. REPLACED EGR VALVE, CODE WENT OFF FOR 1 DAY OR 2 THEN CAME BACK ON. Question: I HAVE A 1997 CHEVY LUMINA, GAS TANK HAS A LEAK IN IT. ANYTHING OVER 1/2 TANK DRIPS OUT. CHECK ENGINE LIGHT IS ON, COMPUTER SAID EGR VALVE NEEDED TO BE REPLACE. I REPLACED, LIGHT WENT OFF. 2 DAYS LATER LIGHT BACK ON. COMPUTER STILL SAYS EGR VALVE. COULD THE SMALL GAS LEAK BE CAUSED FUMES TO SET OFF THE EGR VALVE SENSOR?
Answer:
Probable cause for this code, assuming the wiring at the valve is good is a plugged EGR
passage. There is a passage under the EGR valve that goes into the upper intake manifold, just
beyond the throttle plate. This gets plugged with carbon, and does not allow the EGR to
function properly, thus giving the code
Question:
1992 Chevy Lumina Engine size 3.1L. Service Engine codes DTC23.
This vehicle was bought with the prior owner Never doing maintenance on it. Was running fine now
is giving a code of DTC23 Intake Air Temp. Any ideas? Where is this sensor located?
Answer:
Click picture below for sensor locations.
The intake air temperature sensor (IAT) is located on the intake air duct between the air filter and the
throttle. It is a 2 wire sensor. If any work has been done to your Lumina recently, they may have
just left it unplugged. If that is OK, check that there are no broken wires right at the connector
before replacement. This is common on that engine for the wires to stretch and break. If they are
OK, then yes, replace the temperature sensor.
Question
My Lumina has a rough start, where it'll turn over more then it usually does. It will
then rev lower then usual, almost sputter, and sometimes stall. The panels will all be lit, but
engines out. This only seems to happen after the car was run for a short/medium distance, left
to sit for a very short period of time, and then started again. Could this be a fuel pump on its
way out, no longer able to keep pressure?
Answer:
Could possibly be a fuel pump going out. But sounds more the fuel pressure regulator is
leaking fuel. There is a good description and pics of this on our site. In the 'how-to, tips...'
section. Just let the car get warm, shut it off for a while, then pull off the vacuum hose and smell for gar. If the line smells,
then the regulator is leaking.
Question
1995 Chevy Lumina. After the car warms up to operating temp. The check coolant light comes on, and the engine starts missing in overdrive. Of course the first thing i did was check the coolant it and its full. Replaced all coils, and Module, plugs and wires. Made no difference. Only misses when the low coolant light is on and the engine is at operating temp. HELP.
Answer:
The low coolant level sensor in the radiator and warning light on the dash should have nothing to do with the way the engine is running. The PCM does not look at that. Are you 100% sure it is the low coolant level light ?
