[cjstruble1]

Has anyone on here posted pics or detailed instructions for replacing a front catalytic converter on a 4 cylinder Frontier? I searched around a but didn't find anything.

Thanks,
Craig

 

[paris1]

Use this link to download service manuals:
Knowledgebase - Service Manuals - Nissanhelp.com Forums

 

[1fstmax]

just remove 8 flange bolts, 3 nuts at the bottom of the precat, unplug o2 sensor, and remove egr.

 

[Eskimo616]

I just did it last weekend, If your truck has a lot of miles, be prepared for a fight on those bolts. I stripped one, and snap another. And that was after them sitting all night with PB on them. But it was not to hard to re-tapp them and find better bolts.

 

[1fstmax]

if the nuts are being stubborn, heat them up with a propane torch.

 

[cjstruble1]

Thanks for the replies. I heard the bolts were a real pain...and yeah I have 120k on my truck and live in New England so I'm dealing with a rusty mess underneath there.

Eskimo, were did you get your catalytic converter? From the dealership? Online? How long did the job take you?

Thanks,
Craig

 

[Eskimo616]

I got my CC from eBay, but that was just cause of free shipping the key is that it was a "Eastern Catalytic" brand converter, it is built really well, and is about half a pound lighter. And I did heat them up with a blow torch, they were fused together. Good luck... I live in Dallas and the truck has been here it's whole 180,000 and it was very rusty, and things do not rust here very bad (undercarriage wise).

 

[Sartor]

Has anyone on here posted pics or detailed instructions for replacing a front catalytic converter on a 4 cylinder Frontier? I searched around a but didn't find anything.

Thanks,
Craig

I am buying the pacesetter header which replaces both the manifold and the header, aswell as giving a new down pipe.

 

[jefft]

Has anyone attempted this yet? I'm reading it's "doable" here but also read it requires welding. I'm sure it can't be as easy as the fuel sending until replacement but hope I don't have to take it to the dealer.

Never mind...in wrong forum since I have a 6 cylinder.