I have a 2000 xj I just had the head replaced and new plugs put in now it seems to be doggy and not have as much power. It used to put you back in your seat when you punched the gas now it barley seems like it wants to go. It seems like it's struggling to go

 

Thats not good.

Whats your question?

 

Why does it have no power? It shouldn't be like this

 

I'm guessing something went awry when the head was swapped.

Did you do it or have a shop do it?

The butt dyno can sometimes fool you...

 

Also keep in mind that you are asking folks to diagnose this over the internet, we're not able to see the thing.

You are being pretty vague, and not offering us much info for help. This is going to make things a challenge.

Have you done any diagnostics yourself? Can you provide us ANY better info?

 

I just had a new head put in at the shop they replaced all the plugs and put new head bolts and all new gaskets in. The motor feels like it has less power than before. When you put it to the floor it feels like your brakes are stuck on and feels like it's struggling to get up to speed

 

Did you remove dist ?

 

its an 2000 in the OP. I know his name is misleading.

 

2000 should be coil...

 

Yes it's a 2000 it's got coil packs

 

Oops missed that, id take it back.

 

I did they drove it and checked out a and said it was fine

 

I'd get a 2nd opinion.

Maybe find someone with a real time scanner.