I have a 94 Z28 with 12000 K's on it and the engine light comes on allmost right away when I start it, And I can hear the fan come on at the same time. It's running really good , all the fluids are up.?? I didn't get the manual with it .Any ideals. Thank you in advance Sirs.
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FIAT engine light flashing means the ECU needs adaptation,
you can do it yourself just follow this procedure.
( remember not to accelerate unles is stated) start the engine
let it to warm and wait for the cooling fan to come ON then OFF 3 times, like ON,OFF,ON,OFF,ON,OFF. After the fan cuts off the third time accelerate fully down let the engine rev up to 4000 only then leave the accelerator let the engine goes down back to idle, do this 3 times.the engine light should go away.
If the jeep just cranks but doesn't start right away, you might have what is known as the 'delayed start check engine light problem'. Make sure the check engine light comes on, in the dash, before cranking. If the check engine light does not come on right away, then you do have the delayed start problem and the jeep ecu needs to be repaired.
If you hear relays clicking sometimes and the jeep won't start, at those times, is the check engine light illuminated on the dash, or not? If no check engine light is on the dash, at times when the jeep won't start, your ecu is in need of repairs. The ecu sends power to the ignition and fuel relays and when the ecu starts to malfunction, the relays usually start clicking.
I have a 2001 ford escape 2.0L and i was having trouble of it turning over when the car was warm. If it was a cold start it would start right up. If i drove for a while then turned it off, it wouldnt start back up unless i let it sit for an hr or 2. But once started it would run fine
SOLUTION: I changed the fuel injectors $120 for parts. And now all the hot starting problems went away.
The sensor is located in the very front on top of engine slightly to the right, If you open the hood and lean over the engine just so you can see through the gap between the fan and the engine you will see two rubber radatior hoses kinda to the left then you will see the sensor to the right of them ,kinda looks like a spark plug with a plastic plug on the end of it with two wires connected to it.It screws into the ingine.
I have a similar problem with my 94 concorde... and was advised the on board computer was in need of replacement. Further research led to pulling the computer and cleaning the ground connection to the chassis. It will sometimes leak under the computer and corrode, and compromise the ground, which in turn will cause faulty "code" readings and the engine control light to come on.