Idles rough sometimes even surges new long block

1993 FORD F-150
1,000 MILES
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JSROETH
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  • 1 POST
Have diagnosed emission system Christian brothers says everything ok
New exhaust system
New fuel pump, selector switch, and float sending unit
Compression test both types example 150/60
New air charge temp sensor
New HEGOS sensor
New idle air control valve
I get DTC code DTC42 and DTC77 when performing KOER test with ODB1 tester
DTC42 says voltage is high
Mar 9, 2012 at 2:02 AM
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