I believe it is something egr related you can see that a pipe is broke.

Also the vac lines are a disaster at least i think this is a vac line.

 

Also I thought that these cars were maf yet all i have is a elbow right to the air box, its a 87 does that mean its map/speed density?

 

Take a look at this link and you may find your answer.

https://www.cmoc.ca/5-0l-36/1987-199...-diagram-9820/

 

That is for the air pollution pump system. If you trace that portion of the tubes and hoses, they are coming the air pump driven off the serp belt, leading to the tube that runs across the back of the cylinder heads ... injecting fresh air under certain conditions to the exhaust ports through passages in the heads.

Ford's trade name for the air pump system is the "Thermactor" system, so you need a Thermactor check valve, it's gotten rusty and come apart. Hopefully you are able to get the broken portion removed that is still in the head-to-head pipe, otherwise it will have to be replaced as well, which is a tight job with the engine in the car. Ford Motorcraft part number is CX-1327, you can get that by ordering from the dealer, or online somewhere, or an aftermarket equivalent.



Not sure where the vacuum line is supposed to be going to, you might have to do some Google searching for Fox engine bay pics to see.

The cars were speed-density from 86-88, 89 was the first year we saw the MAF version in Canada (California got them a year earlier).


cheers
Ed

 

Awesome info thanks, this might sound cheap but is there any reason i couldn't just weld it back together???

 

It's possible, but I'm not sure how well that material might weld. Half of it is thin stamped metal, the rest is cast I believe. Give it a go if you're a good welder, it's already fuggered so you can't ruin it. LOL


cheers
Ed