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new headers now bronco wont run right

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  #1  
Old 05-14-2018, 10:39 PM
Holmgrown
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new headers now bronco wont run right

I have a 1993 Bronco with 5.0l 302w auto trans
hey everyone,
I am new to the site and cant seem to find anything to assist me with my problems. I installed some new shortie headers on my rig, and now it doesn't want to run right. it is stalling out at idle and sometimes when I am stopped at a stop light. while trying to fix my problem I have installed new iac valve, map sensor, spark plugs/wires, distributor cap and rotor.
Is there a possible loss in backpressure that will not allow my engine to run properly or what?
Any and all advice would be greatly appreciated,
thank you.
 
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  #2  
Old 05-14-2018, 11:42 PM
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Is that all you initially did was install headers? Did you unhook anything off the old manifolds that you didn't reinstall with the headers? Like... an O2 sensor or something?
 
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Old 05-14-2018, 11:52 PM
Holmgrown
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nope, I put everything back where itís supposed to go. The only o2 sensor I can find is down by the cat on the y-pipe
 
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Old 05-15-2018, 12:06 AM
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Other than accidentally unplugging something as you were installing things I'm not sure what it could be, sorry. I haven't dealt with many "newer" vehicles or should I say attempted to fix newer ones. I would just double triple check every wire and connection. Sometimes things give out at the most inconvenient of times.
 
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Old 05-15-2018, 12:08 AM
Holmgrown
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Thank you I appreciate it
 
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Old 05-15-2018, 12:03 PM
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double check your firing order. I did this very thing and had a wire or two swapped. also make sure you dont have any of the wires touching the headers, they will melt and cause a loss in spark.
 
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Old 05-20-2018, 09:36 AM
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Also double check the vacuum lines. Those hard plastic lines break very easily.
 
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