importsmasher

I am working on putting an 89 5.0 into the wife's 66 Mustang. I have discovered that I am missing a couple of solenoids:

EGR vacuum regulator solenoid

Air management solenoid there are 2 of these (I think these are also called air diverter solenoids or something).

My question is, I am on a very small budget, and plan to source these from a wrecking yard. What other vehicles/engines would have the same parts? I have an 87 F150 as my daily driver; would those parts be the same? Just trying to identify what vehicles I can pull these off of, or if I am stuck looking for a 5.0 Fox body Mustang.

I guess the other question would be, what happens if I leave these off? Will there be any driveability or performance issues?

Any help is appreciated.

Thanks,
Importsmasher

dawson1112

You don't need them , they are strictly smog equipment.

I removed the egr and smog pump from my 94 and just plugged the vacuum lines.

I doubt you need to have that 66 smog tested so I wouldn't worry about it.

importsmasher

So the air management solenoids are for the smog pump system? I wasn't sure. If that is the case, I agree, I will just not worry about them. I have already removed the smog pump.

I have been contemplating getting rid of the EGR, but I have run across engines that have driveability issues (pinging) when the EGR isn't working. I take it you haven't had any such issues?

I just want to make sure I hook up everything that the engine needs to run properly.

Thanks,
Importsmasher

dawson1112

Air diverter valves are only functional with the smog pump attached so with out it they serve no purpose at all.

As far as the egr is concerned, It can be ( but not necessarily ) a cause of pre ignition knock, or ping as you call it. The issue is more with engine cylinder temps because the egr does recycle some spent exhaust gasses back into the cylinders and help cool them a little. But for the most part as long as you don't go crazy on advancing the timing you shouldn't have any trouble. I only experienced pinging if I bumped the timing on my 94 up to 14. If I kept it at 12 or 13 it was fine.


Generally as long as the combustion chambers and valves are clean of carbon deposits this isn't an issue , because the carbon deposits can become red hot and ignite the mix before the plug fires. Some seafoam through the intake helps to keep the valves and pistons free of carbon.
Also running a 180 thermostat vs the stock 195 degree , and running a cooler plug can help as well.

importsmasher

Perfect, thanks! That actually leads me to another question...The EGR plate has two little water hoses attached to it. Are these there to warm the incoming air, or do they serve an EGR-related purpose?

Thanks again,
Importsmasher

dawson1112

Those are to help keep the egr spacer plate cool. Since hot exhaust gas would be going though there if the egr was working.