'95 Mustang GT missing throughout the RPM band and won't idle
#1
'95 Mustang GT missing throughout the RPM band and won't idle
Hey guys, sorry about the thread hijack earlier. I have a '95 Mustang GT, stock save for some Flowmaster 40 mufflers, and it's missing throughout the RPM range. It also won't idle well. We did some KOEO and KOER tests and they returned the following codes.
We pulled the saved codes first and it gave us the following:
113
157
212
532
543
556
Then we reset all the codes and pulled another KOEO test:
157
Since it was a MAF error, we cleaned the MAF with some MAF cleaner since the wires were black. The car returned on a KOEO test this time:
157
212
113
So, why not, we ran a KOER test and received:
412
172
136
Lot of fuel pump errors and the engine is lean on both sides. Is it time to replace the fuel pump? What about the MAF, is it finished too? Thanks in advance!
We pulled the saved codes first and it gave us the following:
113
157
212
532
543
556
Then we reset all the codes and pulled another KOEO test:
157
Since it was a MAF error, we cleaned the MAF with some MAF cleaner since the wires were black. The car returned on a KOEO test this time:
157
212
113
So, why not, we ran a KOER test and received:
412
172
136
Lot of fuel pump errors and the engine is lean on both sides. Is it time to replace the fuel pump? What about the MAF, is it finished too? Thanks in advance!
#2
Fuel pressure test is necessary. Fuel pump is running so circuit failure is questionable. CCRM is more likely the problem. IAC need cleaning(412) or replacement. At end of koer do the cylinder balance tests(3 of them) may have more insight.
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