1990 Chevrolet Caprice Q&A
1990 Chevrolet Caprice Question: 89 caprice classic
I got my car last Janruary in 2009. I replaced the serpintine belt, water pump, radiator, when i first got it. it drove ok, then i replaced the fuel filter, fuel pump, and O2 sensor...after replacing these 3 things..i notcied that my check engine light would only come on if i was driving on the interstate. i let my mechanic know, he ran a diagnostic on it and said it was running rich..said it was not a bad thing, i am a girl so im not sure what rich means. he said it was no big deal and that was all what is wrong with my car. i replaced the EGR valve, and i got all new spark plugs and wires this year thinking maybe it would help..still not improvement.. is there anyone who is knowledgeable about 89 chevy caprices? - ladytb
running rich means burning more fuel then it needs. your new pump might be pulling more fuel then your old one, or sometimes depending where you purchased your 02 sensor it might be slightly different from stock. dealer would be the best place to purchase an 02. but if it was me i would find a performnace shop and tel them your running rich and see what they say - ernesttiauli
THERE COULD BE A FEW THINGS, IT COULD BE THAT YOUR FUEL PUMP IS GIVING TO MUCH FUEL OR YOUR TIMING IS OFF A LITTLE TRY REPLACING THE CAP AND ROTOR AND GETTING THE TIMING STRAIGHT ON IT, THIS HAPPENS SOMETIMES ON THESE CARS AND WHEN YOU TIME IT MAKE SURE YOU DISCONNECT THE ADVANCE TIMINIG WIRE OR EVERYTHING WILL BE ALL OVER THE PLACE - jpsthesecond
Hello, I have the same car and I am a Master ASE Auto tech. I have some questions for you before I can say what might be wrong with your car. First was the Check Light coming on before you replaced the O2 Sensor or after the O2 was replaced? What was the Brand of the O2 Sensor? Please let me know the answers. Thanks; Carter - Carter S
87K Original on the Odometer. just this morning I got in it, started it right up as usual but when I put it in reverse to back out it didn't move, So I put it in drive, hit the gas, it didn't mov...