Any Ideas on 1992 Ford Emission Failure?
Question:
My fuel mileage is worse than my old 1992 that I sold that had 185,00 miles, which had the shorting bar and always passed emissions but pinged like crazy. My new 1992 has 130,000 miles and no shorting bar and does not pass emissions and does not ping. The new 92 has more zip but worse milage. I am thinking about buying a shorting bar(never got the orginal one), filling up on premuim gas, maybe adding some additive and then try the test again. – Hide quoted text — Show quoted text – >writes: > I was wondering if the >ignition shorting bar that the dealer removed could be a problem, it >iliminated the pinging? >Mark: >IIRC the octane shorting bar retards the timing 3 degrees. How’s your fuel >mileage? I don’t think that it would affect your emissions. > Could the catalytic converter be shot? What >else would you look at? The test said it failed the NOx test, passed >the CO text no problem, and the HC test was very close but still >passed. Not really sure what to do. >The C.C.does control the HydroCarbon emissions and CarbonMonoxide directly. >The NOx is more dependent on the combustion chamber temperature, and is >generally controled by the ExhaustGasRecirculation system. However, I don’t >think that the ‘92 EXP has an EGR system. The ‘93 and the ‘94 DO have an EGR >system. I am not at all sure if the C.C. has any control on the NOx. >Maybe you have excessive combustion chamber deposits that were causing the >pinging? Maybe if you have them cleaned out it will help BOTH the pinging AND >the NOx. After the cleaning put your octane shorting bar back into its socket >and maybe your fuel mileage will increase. >Another thing just occured to me about the high HC reading. It’s a fairly well >known failure possibility with the fuel pressure regulator. When the diaphram >in the FPR fails it allows fuel to enter the vacuum tubing and then into the >engine to be burned off and that will really increase your HC emissions. >HTH. >-Steve >PS, be sure to visit ( WWW.glue.umd.edu/~singletn/exp.html ) The Explorer >owners homepage.
Response:
Scrape your inspection stickers from your windshield and drive like that. Cops are just like dogs in that they only know what they have been trained to do – look for expired stickers. They have not been trained to notice NO stickers. I’m going on 7 years and 80,000 miles with no stickers this way. Sean
– Hide quoted text — Show quoted text -> I have a 1992 Ford Explorer that failed emissions test. 2 months ago > I changed oil, spark plugs, air cleaner. Everything runs fine, does > not smoke, good vacuum (18-20), 130,000 miles. I just sold a 1992 > Explore with 185,000 miles passed just fine. I was wondering if the > ignition shorting bar that the dealer removed could be a problem, it > iliminated the pinging? Could the catalytic converter be shot? What > else would you look at? The test said it failed the NOx test, passed > the CO text no problem, and the HC test was very close but still > passed. Not really sure what to do.
Response:
writes: > I was wondering if the >ignition shorting bar that the dealer removed could be a problem, it >iliminated the pinging?
Mark: IIRC the octane shorting bar retards the timing 3 degrees. How’s your fuel mileage? I don’t think that it would affect your emissions. > Could the catalytic converter be shot? What >else would you look at? The test said it failed the NOx test, passed >the CO text no problem, and the HC test was very close but still >passed. Not really sure what to do.
The C.C.does control the HydroCarbon emissions and CarbonMonoxide directly. The NOx is more dependent on the combustion chamber temperature, and is generally controled by the ExhaustGasRecirculation system. However, I don’t think that the ‘92 EXP has an EGR system. The ‘93 and the ‘94 DO have an EGR system. I am not at all sure if the C.C. has any control on the NOx. Maybe you have excessive combustion chamber deposits that were causing the pinging? Maybe if you have them cleaned out it will help BOTH the pinging AND the NOx. After the cleaning put your octane shorting bar back into its socket and maybe your fuel mileage will increase. Another thing just occured to me about the high HC reading. It’s a fairly well known failure possibility with the fuel pressure regulator. When the diaphram in the FPR fails it allows fuel to enter the vacuum tubing and then into the engine to be burned off and that will really increase your HC emissions. HTH. -Steve PS, be sure to visit ( WWW.glue.umd.edu/~singletn/exp.html ) The Explorer owners homepage.
Response:
What "shorting bar" are you referring to? If you’re referring to the SPOUT connector, yes this will affect your ignition timing and emmisions. That connector is only to be removed for adjusting the base engine timing. With the SPOUT connector removed, it disables the PCM from electronically controlling spark advance. > I have a 1992 Ford Explorer that failed emissions test. 2 months ago > I changed oil, spark plugs, air cleaner. Everything runs fine, does > not smoke, good vacuum (18-20), 130,000 miles. I just sold a 1992 > Explore with 185,000 miles passed just fine. I was wondering if the > ignition shorting bar that the dealer removed could be a problem, it > iliminated the pinging? Could the catalytic converter be shot? What > else would you look at? The test said it failed the NOx test, passed > the CO text no problem, and the HC test was very close but still > passed. Not really sure what to do.
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Response:
I have a 1992 Ford Explorer that failed emissions test. 2 months ago I changed oil, spark plugs, air cleaner. Everything runs fine, does not smoke, good vacuum (18-20), 130,000 miles. I just sold a 1992 Explore with 185,000 miles passed just fine. I was wondering if the ignition shorting bar that the dealer removed could be a problem, it iliminated the pinging? Could the catalytic converter be shot? What else would you look at? The test said it failed the NOx test, passed the CO text no problem, and the HC test was very close but still passed. Not really sure what to do.
Response:
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