So the wonderful state of California lowered the standards from the last time the Mustang had to be smogged so it failed this time which really sucks since I was set to sell it this weekend.
It is an 86 5.0 5 speed with mass air conversion.
Has all the normal bolt on, CAI in the fender, 65mm tb, headers, bassani with cats, Flowmaster catback. 77mm maf, custom chip.
It does have a stock 195 thermostat which i could change to a 180 but that could hurt the other readings.
Failure was from NOx.
2 years ago the Low speed test was about 300 higher than it is now so that has come down. The High speed has gone up by about 300.
KOEO tests
15. Prom Failure. Probably from having a chip in it.
81. Air management system 2 or Inlet Air Control circuit failure or boost pump fail.
82. Air management system 1 or Inlet Air Control circuit failure.
95 Thermactor Air System inoperative or fuel control circuit failure.
On the KOER test.
41 No Exhaust Gas Oxygen Switching Detected- always indicating lean
I know that NOx are normally caused by temp and in most cases a bad EGR yet I got no EGR codes on either test.
I need to drop the NOx down by about 45 at the slow test and about 230 at the higher speed test.
I checked all the thermactor lines and there are no cracks, breaks, or anything disconnected.
I am going to check and maybe adjust my fuel pressure. It might be a little low so raising it may help with the lean issue.
I am also thinking that since I have a chip in there I might pull it and put the stock MAF back on incase the chip is giving it a little too much timing.
I only get one free retest so i need to make it count.
Thanks.
It is an 86 5.0 5 speed with mass air conversion.
Has all the normal bolt on, CAI in the fender, 65mm tb, headers, bassani with cats, Flowmaster catback. 77mm maf, custom chip.
It does have a stock 195 thermostat which i could change to a 180 but that could hurt the other readings.
Failure was from NOx.
2 years ago the Low speed test was about 300 higher than it is now so that has come down. The High speed has gone up by about 300.
KOEO tests
15. Prom Failure. Probably from having a chip in it.
81. Air management system 2 or Inlet Air Control circuit failure or boost pump fail.
82. Air management system 1 or Inlet Air Control circuit failure.
95 Thermactor Air System inoperative or fuel control circuit failure.
On the KOER test.
41 No Exhaust Gas Oxygen Switching Detected- always indicating lean
I know that NOx are normally caused by temp and in most cases a bad EGR yet I got no EGR codes on either test.
I need to drop the NOx down by about 45 at the slow test and about 230 at the higher speed test.
I checked all the thermactor lines and there are no cracks, breaks, or anything disconnected.
I am going to check and maybe adjust my fuel pressure. It might be a little low so raising it may help with the lean issue.
I am also thinking that since I have a chip in there I might pull it and put the stock MAF back on incase the chip is giving it a little too much timing.
I only get one free retest so i need to make it count.
Thanks.