» » »

Chevrolet Q&A

Ask Your Question

2000 Chevrolet Blazer Question: What is the correct ACDELCO fuel pressure regulator part number for 2000 Blazer

 

Question

Chevy2000, Potwin, KS, August 29, 2013, 06:22
 Rookie

I have a 2000 Chevy Blazer Lt 6 cycle 4.3L. Car has multiple fuel injectors controlled by the computer. We reported a miss and A/C blowing warm air. They put in fuel injection fuel rail fuel pressure sensor replacement. Part # 19210686 REGULATOR KIT. They reported "found fuel pressure regulator leaking internally, replaced fuel pressure regulator." I purchased the 2000 Blazer new and always got 16-18 mpg city driving with A/C on. Now I am getting only 12 mpg cycle driving with A/C on. Is the above part the correct part installed in my Blazer. I searched the internet and found www.autopartswarehouse.com. They reported AC Delco Fuel Pressure Regulators part nos AC217388 mfg # 217-368 and ac217251 mfg 217-2251 for my 2000 Chevy Blazer. Do you know what is causing the low mileage? Do you know what is the correct parts that should go in my Blazer. Thank you in advance for your assistance. Please respond at your earliest convenience.

2 Answers
Flag This
  • Medium-star Best Answer
    August 29, 2013, 07:05
    Profile_thumbnail
     Master

    Have you talked to whomever it was that installed the replacement parts about this? How is the performance of the engine? If it were getting too much fuel, the light should be on with a rich exhaust condition! Is it? Was the original problem fixed by the replacement parts? Just need a little more info. because parts and their numbers are updated regularly. One more thing, was the fuel spider ASSEMBLY replaced? It doesn't have a fuel rail as you stated, we need to know exactly what was done to your vehicle to be able to help at all!

    Flag This
  • Reply

    Chevy2000, August 29, 2013, 11:39
     Rookie

    Hello, thank you for responding so quickly. I will answer you questions in the order you wrote. When I picked up the car the first time after replacement part the car was going 30 mph without foot on accelerator peddle. Idle was set too fast, and mileage went down 12-14 frokm 16-18 mpg.
    Performance of Engine: Hitting gas peddle with no load on it running too rich. The light is not on. Original problem: brought Blazer in for a miss, A/C blowing warm air out of vents and bloack smoke out of exhaust if you stepped on accelerator hard. They also change the oil, filter and lub. Dealership said needed evaporator core, intake manifold leaking, new gaskets, leaking air. Said pressure relief valve is not working right. A/C compressor has to be flushed out. Replace housing that goes around the evaporator core (plastic might crat when taken apart), put in refrigerant, sealer.
    - Miss is gone
    - No black smoke, but running too rich
    - No notation on dealership invoice that fuel spider assembly was replaced only. It quote from invoice
    "PRESSURE REGULATOR
    "CAUSE: excessive smoke from exhaust
    "4022490 FUEL INJECTION FUEL RAIL FUEL PRESSURE SENSOR REPLACEMENT
    "WGM
    "1 19210686 REGULATOR KIT
    "FC: 6061
    "COUNT: 1 ...
    "found fuel pressure regulator leaking internally, replaced fuel pressure regulator"
    Re: A/C
    "diag dtc's, check fuel trim values, both banks rich, test evap system for unwanted purge, test fuel pressure, excessive leak down, necc to replace leaking fuel pressure regulator"
    Re: refrigerant leak
    "leak test system, found leak @ evaporator to accumulator o-ring, replaced o-ring, evac & charge system, high side service port failed upon charge hose removal, necc to replace A/C line w/service port from condenser to evaporator, evacuate & recharge A/C system"
    "operation to design intent on road tests, no powertrain dtc's stored, poss surge due to A/C compressor cycling due to low refrigerant condition"
    Re: A/C
    "replace low pressure switch, recharge, small leak at the accumulator, recover and replace accumulator, road test, vehicle, ok at this time."

    Car was at the dealership 3 times for A/C blowing warm air and without a car for 9 days.

    I purchased my 2000 Blazer new and has 90,000 miles on it. Periodic maintenance was made at dealership. The car is garaged and in excellent condition.

    I do not know why they put a notation about fuel rail as quoted above on the invoice. I hope the above information will help. Thank you for your quick response and excellent inquiry questions.

    Flag This
  • Reply

    pushrod, August 29, 2013, 15:19
    Profile_thumbnail
     Master

    Now that's a reply! I too have a 2000 Blazer, let me do a little thinking on this and i will get back to you! Ok, is the ENGINE running ok now? Like it did when it WAS running ok, before all this happened?

    Flag This
  • Reply

    Chevy2000, August 30, 2013, 06:19
     Rookie

    Engine seems to be running okay but it is using too much fuel. And the mileage is going
    below 12 mpg city with A/C on. Now we can smell gas in the oil. Thanks again for your
    quick response.

    Flag This
  • Reply

    pushrod, August 30, 2013, 07:12
    Profile_thumbnail
     Master

    Go back to the installer and ask them WHY this is happening. Under the intake plenum is what is called a fuel spider assembly, i do not understand why that was not replaced! Maybe the mechanic didn't think it needed it but that was the best time to have installed it since the manifodl was removed to replace gaskets! The assembly containes ALL the componets inclu. pressure reg. and injectors. Also ask what they call a fuel rail as this engine doesn't have one that I have ever seen.
    Note: the fuel spider would have been more money BUT i think it would have been well spent, considering what you have now!
    Also note that i am just speculating on the problem!

    Flag This
  • Reply

    Chevy2000, August 30, 2013, 12:41
     Rookie

    Thank you for your quick response. We are going back to the dealership Tuesday. Would have liked to have gone today but they said they were swamped. As you are aware I have a 2000 Blazer 4.3L V-6 VORTEC engineer, multi-port fuel injection. This morning I went out and the A/C was blowing warm air out of the vents for the 4th time (no cold air). Dealership worked on A/C three times and it is still not fixed. Fuel mileage down to 12 mpg city with A/C running when it was running. Repaired 3 times and still not fixed. I checked oil dipstick and it smells of gasoline. NOTE: oil and filter were replaced by dealership when I had repairs done on A/C and fuel system. Fuel system is running rich. We have paid out $2,202.04 for repairs. This morning without A/C it was 95.5 degrees with the windows open. I called up dealership this morning to report on-going problems NO A/C and poor mileage for the FOURTH TIME, and they told me to bring the Blazer in TUESDAY (it is Friday today). I will not be able to use my vehicle that has no A/C labor day weekend: namely, Friday, Saturday, Sunday, Monday and Tuesday when we bring our Blazer back to the dealership for the 4th time.
    We will address the issue of no installation of fuel spider assembly when the manifold was removed. Any suggestions on the above? Have a great day!

    Reply
    Flag This
  • Answer #2

    August 29, 2013, 09:17
     Technician

    FIRST, TO ANSWER YOUR QUESTION ABOUT THE PART NUMBER: I THINK THE PART YOU GOT HAD BEEN SITTING ON THE SHELF FOR A WHILE. I BELIEVE THAT NUMBER HAS BEEN SUPERSEDED AND IS NO LONGER A GOOD NUMBER. THE PART HOWEVER IS PROBABLY CORRECT.
    HAVE YOU KEPT UP WITH YOUR MILEAGE SINCE THE VEHICLE WAS NEW?
    WAS THE MISS YOU REPORTED FIXED BY REPLACEMENT OF THE FP REGULATOR?
    WAS ANYTHING ELSE REPLACED ON THE FUEL INJECTION SYSTEM?
    THERE ARE A NUMBER OF THINGS THAT CAN CONTRIBUTE TO A LOSS OF MILEAGE...HOW MANY MILES HAVE YOU PUT ON THE VEHICLE SINCE NEW? ALSO, HAVE YOU KEPT UP WITH YOUR MAINTENANCE ?

    Flag This
  • Reply

    Chevy2000, August 30, 2013, 12:47
     Rookie

    Thank you for your quick response to my problems to my Blazer. I think my response to PUSHROD will answer your questions. Blazer was always taken to dealership for maintenance. Miss was fixed by FP regulator. Nothing else replaced on the fuel injector system. I have 90,000 miles on my Blazer. Kept up with maintenance. Please look at response to PUSHROD re NO A/C again, bad mileage. Taking Blazer back to dealership for the 4th time. Anything to add?

    Flag This
  • Reply

    Rojo1, August 30, 2013, 13:53
     Technician

    I AM SORRY. MY WIFE WAS IN A THREE CAR ACCIDENT YESTERDAY, FORTUNATELY NO HOSPITAL TRIPS BUT OUR VEHICLE WAS TOTALED. I WAS UNABLE TO GET BACK UNTIL NOW.
    OKAY, JUST NOTICED YOU LIVE IN POTWIN, KANSAS. LOOKS LIKE THIS DEALER MUST HAVE A CAPTIVE AUDIENCE. THIRD TIME WAS OBVIOUSLY NOT A CHARM SO LET'S SEE WHAT WE CAN FIGURE OUT. KEEP IN MIND, I DON'T KNOW WHAT YOU KNOW SO I'M GONNA HIT YOU WITH EVERYTHING I GOT.

    THINGS THAT CAN AFFECT MILEAGE:
    TIRES---AT WHAT PRESSURE DO YOU SET YOUR TIRES? EVERY POUND PER SQUARE INCH OF AIR PRESSURE BELOW SPEC EQUALS ROUGHLY ONE MILE PER GALLON. ARE THE TIRES THE PROPER SIZE FOR THE VEHICLE? THESE SPECS CAN BE FOUND ON A STICKER LOCATED INSIDE THE DRIVER'S DOOR JAM . THESE SPECS ARE ONLY ACCURATE WHEN THE TIRES ARE COLD. ALL THAT MEANS IS CHECK THE TIRE PRESSURE FIRST THING IN THE MORNING. I USUALLY CHECK PRESSURE WITH TWO DIFFERENT GAUGES BECAUSE MOST ARE CHEAPLY MADE AND THEY TEND TO VARY QUITE A BIT.

    YOU MENTIONED EARLIER THAT THE ENGINE OIL SMELLED LIKE FUEL. THIS CONDITION CAN INDICATE A FAIRLY LARGE INTERNAL FUEL LEAK SUCH AS THE FUEL DISTRIBUTOR (SOMETIMES REFERRED TO AS A "FUEL SPIDER") WHICH COULD ALSO CAUSE THE MISSING AND THE FUEL SMELL YOU MENTIONED. BUT ACTUALLY, ANY MALFUNCTION THAT RESULTS IN A RICH CONDITION WILL, GIVEN ENOUGH TIME, CAUSE THE OIL TO SMELL OF FUEL. YOU STATED THAT THE ENGINE OIL AND FILTER SERVICED POST-REPAIR? ENOUGH FUEL IN THE OIL FOR WHATEVER REASON, WILL FORCE THE SYSTEM RICH BECAUSE THE GASEOUS STATE OF GASOLINE IS WHAT BURNS IN AN INTERNAL COMBUSTION ENGINE; IF FUEL VAPOR IS PRESENT IN THE CRANK CASE, THE PCV SYSTEM WILL PULL THOSE VAPORS OFF THE TOP AND SEND THEM STRAIGHT TO THE INTAKE BRINGING ABOUT A RICH EXHAUST CONDITION. SO JUST MAKE SURE THE OIL AND FILTER WERE INDEED CHANGED AFTER THE REPAIRS, DO THAT FIRST. I AM SOMEWHAT CONFIDENT THOUGH, AS LONG AS FUEL IS STILL PRESENT IN THE CRANK CASE, THE SYSTEM WILL BE RICH.

    I WILL WAIT FOR YOUR RESPONSE CONCERNING THE WORK PERFORMED BY THE DEALER BECAUSE I THINK I HAVE YOUR FIX---(A LEAKY FUEL PRESSURE REGULATOR WILL FORCE ANY FOUR-STROKE ENGINE RICH BUT ONLY IF IT LEAKS INTERNALLY. ON A VORTEC IT DOESN'T MATTER WHERE THE REGULATOR LEAKS BECAUSE IT RESIDES INSIDE THE UPPER INTAKE PLENUM. IN OTHER WORDS THE REGULATOR LIVES IN A VACUUM CHAMBER).

    I THINK THE ONLY THING I NEED TO KNOW IS THIS: .I THINK YOU MAY HAVE ANSWERED ME. I WAS REVIEWING THE NOTES AND IT LOOKS LIKE YOU DID HAVE AN OIL AND FILTER CHANGE AFTER THE REGULATOR WAS REPLACED AND THERE IS FUEL IN THE OIL AGAIN. IF THIS IS CORRECT, THERE MAY INDEED BE A PROBLEM WITH THE FUEL DISTRIBUTOR. HOWEVER, THE FUEL DIST THAT CAME IN YOUR BLAZER IS THE UPDATED PART CORRECTED FOR THE PROBLEMS THEY HAD. DOES IT FEEL LIKE IT HAS LOST ANY POWER?
    WHAT OTHER MAINTENANCE WAS DONE? AIR FILTER, FUEL FILTER, SPARK PLUGS? AND HOW MANY MILES SINCE?

    Flag This
  • Reply

    Chevy2000, September 20, 2013, 15:08
     Rookie

    Thank you for your reply. Sorry to hear your wife was in a 3 car accident. Glad there
    were no hospital trips. I live in Florida. I will attempt to answer your questions
    in the order you ask. My tires are fine, they were checked at the dealership and when
    we brought the Blazer home. After the dealership changed the oil and filter the car
    was running rich and there was a smell of gasoline on the dipstick. We reported that
    to the dealership and they changed the oil and filter for the second time. This took away
    from the car running rich. After the 4th time back to the dealership for warm air coming
    out the A/C vents, the service advisor said they replaced a "faulty switch", but it was not
    listed on the invoice when I picked up the car. My car was turned up 2,000 miles ago.
    New air filter, fuel filter, spark plugs etc., The only problem I have now, and I brought
    it back 3 times since they worked on the A/C and installed a fuel pressure regulator is
    that I am getting terrible mileage. I did not bring in the car because of low mileage, I
    brought in the car for warm air coming out of A/C vents and now I have a mileage problem.
    I was getting 14-18 aver econ mpg city driving with A/C on. Now I am only getting 11-14.
    I told the service manager I am going to track the average econ mpg and if it is still low
    I was coming back. Response, was "don't come back". I have my 2000 Blazer new and have
    been getting great mileage for a SUV., namely, 14-18 city with A/C on. I am in contact
    with GM representative on this matter. I also asked the service manager why they did not
    install a spider assembly at the time they installed a fuel pressure regular. His
    response was, "that's an expensive part",. Would a spider assembly get me back the
    mpg back? I do not have any misses in my car. Thank you in advance for your information.

    4th time I brought the

    Flag This
  • Reply

    Rojo1, September 23, 2013, 23:01
     Technician

    I kinda thought I would hear back from you. Don't come back huh? Gotta love that! Are there any other options for service work in your area? First I want to clear up one thing about your repair invoice. The line beginning with a 7-digit number that mentions the fuel rail is simply a labor operation code entered by the adviser which categorizes the repair made to your vehicle. That number is used solely for the purpose of paying the tech. The only part listed is three lines down from the op-code with the 8-digit part # 19210686 which is called a REGULATOR KIT. As for your question about the spider, yes, it could be causing the rich condition but before committing to it, I would want to know why. Problem is I'm not sure what to believe from the story on the invoice. But you will need someone with experience to diagnose and if needed replace the fuel distributor. {F.Y.I. here’s how the thing works: the old design was made up of a box containing the six fuel injectors. Atop this assembly were six tubes, each with a nozzle at the tip designed to atomize the fuel. The nozzles are directed through ports into the combustion chamber of each cylinder. The new design looks very similar except the nozzles are gone and the fuel injectors are mounted in their place.} In my opinion, if the only symptom you have is poor mileage, the fuel distributor is not likely the cause.
    I do have a couple of ideas though. A sensor can be out of range for the conditions without being out of range for the computer. Let me explain: you may have a coolant temperature sensor that thinks it is 50 degrees F when it’s actually 80 degrees F. This would cause the computer to richen the mixture and in turn kill your mileage without setting any codes (this sensor is different from the one that runs your gauge). But before we think about that one, let’s consider the MAF or Mass Airflow Sensor. Located in the big intake hose attached to the air cleaner, the MAF is the first input the ecu sees. If you remove this sensor, be very careful with it but you will see some very small resistors mounted so they are in the path of the incoming air. If even a slight amount of dust accumulates on their surface, the computer will receive incorrect inputs so that down at sea level in Florida the ecu adjusts the mixture for the Rocky Mountains. Again, out of range but no codes. All you need is a can of Electronics Cleaner (not electrical parts cleaner) from the local parts store. Use it to wash the sensor by spraying in the direction of the air flow. Then let it air-dry before re-installing. I would try this one first. I’m going to leave you with that for now but first I just want to make sure that you are actually calculating the mileage on paper and not using the mileage meter on the dash. These things use too many inputs to try and achieve an average mpg so just do it yourself and it will be more accurate. Good luck and let me know.

    Flag This
  • Reply

    Chevy2000, September 24, 2013, 16:31
     Rookie

    Thank you for your reply. I always set my TRIP to 0, and I have an
    "average econ mpg" on my console that I reset also when I reset TRIP to 0.
    This gives me the miles traveled under TRIP and the average mpg used with
    "average econ mpg" setting. I have been computing average mileage using
    these settings since 2000.

    Flag This
  • Reply

    Rojo1, September 25, 2013, 10:09
     Technician

    Sorry, I wasn't questioning your tactics but since we have consistent usage of the mileage meter, we can go with that............I was just reviewing all of the previous exchanges on this thread and I may not have checked thoroughly enough on one thing. Tell me one thing; your fuel mileage dropped after the first visit to the dealer and has not improved since, correct?

    Reply
    Flag This