Question about 1995 Chevrolet Lumina
The service engine soon light is on and it smells rich.
Run fault codes and check for HO2S and O2 sensors problems . Check fuel pressure and injectors for operation.
Posted on Apr 19, 2014
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Posted on Jan 02, 2017
Your problem is a leak in the cpi pletium most likely the pressure line has a leak
had same problem with mine $45.00 PRESSURE LINE KIT AND $15.00 GASKET FOR PLETIUM and 2 hours labor problem sovled.
You can remove vortec cover and remove air regulator to look inside pletium. I had gas vapor on driver side . that is where fuel lines are. fuel regulator is on passenger side. turn key on and look in hole and see where fuel is spraying. taking pletium off you can again turn key on and make sure where fuel is coming from.
Posted on Feb 06, 2009
i want you to get OBD trouble codes from your computer. then post them on here. im sure it will hold clues to what the problem is...Various auto part stores will do this service for free in hopes you will buy parts from them...but call them first and make sure. parts to look at Idle Air Control (IAC) Valve...it acts like a choke with modern engines. also the Coolant temp sensor is associated with this as well. Second is the Mass Air Flow (MAF) Sensor. and last one is your Manifold Absolute Pressure (MAP) Sensor . lastly it could be the Throttle position sensor (TPS).. all these can be detected on your computer within the car. although the the numbered codes will be labeled with abreviations like MAP Sensor or IAC valve. also you can manually test all these sensors at home with a regular voltage tester and reading some online info...just search " How to test a MAP sensor" almost all sensors have very similar readings from car to car, so its pretty generic. hope this helps
Posted on Mar 13, 2009
That normally means that you have a issue with your gas cap try replacing your gas cap first then diconnect the negative terminal of the battery for about three minutes to clear the memory and start the truck again
Posted on Apr 11, 2009
When the light comes on without flashing, it just means an emissions problem, when it starts to flash it has become more serious. I suspect that there was an error putting the plugs and or wires. That computer can determine if there is a misfire and it will put out a P040X, code where X represents which cylinder is the problem. This will help you not have to take each one apart. If there are more than one, check each number.
Ex. P0401 means there is misfire on cylinder number 1
P0400 is a random misfire detected.
If you take it to an Advance or Autozone they will usually scan if for free.
By the way, if you used cheap plugs instead of platinum plugs that could do it too.
Hope this helps.
Posted on Nov 25, 2009
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