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1985 Bronco 5.0 EFI manual transmission
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14 Posts
Discussion Starter · #1 ·
Trying to work through some issues and codes. Pretty sure the evr solenoid is fried. Anyways, was examining the Egr and, upon removing it, found that it leads to a pinched tube. During testing, I think I compromised the diaphragm. I’ve had the bronco for 10k miles and, until recently, it ran great. I want to know if this is a poor man’s Egr delete and if it provides any positive function. If this mod (pinched tube) had in fact deleted the function of the Egr, then perhaps I won’t spend money replacing it and the solenoid. When I was able to apply vacuum, it did impact idle.
Many thanks
 

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1996 bronco, 351w, E4od
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233 Posts
looks like someone was trying to conceal the fact that they disconnected the egr system by making it look connected to pass inspection. And i believe you could fool the 85 broncos into thinking the egr was connected.
 

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1986 Eddie Bauer 5.0EFI AOD Full length headers Y pipe into single 3" Magnaflow 3" factory exit
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986 Posts
I had egr codes on my new to me 86 302 EFI, and replaced the egr valve, & valve position sensor, and it did not fix the codes. I found the egr timed dealy solenoids were gone, and once i got them all working correctly, the truck has never run better. Miesk5 sent me an ebay link with the part I needes just a month ago or so for $28.88 here's my post on it. The tube is available as well at any auto parts store online, but I don't think they are too fun to put on.

 

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Registered
1985 Bronco 5.0 EFI manual transmission
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14 Posts
Discussion Starter · #5 ·
Thanks for the replies. As it was this way before my current problems popped up, I apt to leave it be for the time being and throw my $$, time, and tears at the other issues.
 
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