Hey i'm trouble shooting a boost problem that i've been having and I have everything taken off to begin working with the "rats nest" except for the engine lift loop that connects to the back side of the UIM with two bolts. Each bolt has a ground bolted under it that needs to be removed. These bolts are torqued down extremely tight and i just cant seem to get them off. I can get a ratchet on them but they just wont budge. If anyone has had problems with these bolts before and might have any tips as to how to get them off I would appreciate it.

Also, is it ok to use something like PB blaster or WD 40 on them? since they have a ground under them.

 

Sometimes ground straps act like lock washers. Put a good box end wrench on it at the proper angle and hit it with a hammer. Hold the wrench while hitting. They will come loose.


Later

 

+1
also try to extend the leverage and add a extension on the wrench with another wrench to break the bolts loose.

once you have it off you might as well buy a engine torque damper instead of installing the loop back on it.

 

+2 on the box end, preferably with a 5 pt. A dead-blow hammer is handy for moments like this.
PB Blaster is smelly, but electronics friendly. Just try to keep it off any silicone hoses in the area.

 

I'm sure you're probably turning the wrench the right way (righty-tighty, lefty-loosey), but just to make sure, those 2 bolts that hold the loop are facing opposite your perspective since they bolt into the back of the UIM, so in other words, you would have to turn your wrench/ratchet clockwise instead of counter clockwise to loosen them. Also, one of those ground straps has a clip on the firewall side that you can just disconnect which is way easier than unbolting it from the UIM side. If you need massive amounts of leverage and do not have a really long breaker bar, then use a pipe like the upper half of hydraulic floor jack handle, but be careful when you do this, if the bolt is seized, it will break.