08soundwave

Ok so my 08 xb has extreme power loss and idailing issues. Was driving along sudden loss of power with sound of vacuum it does it at about 2300 rpm. Have replaced fuel pump regulator. And throttle body. No codes ethere. But have seen fuel pressure going haywire with computer. About to tow to dealer soon get them to diagnose. Oh and car has 250000 on it and this is first major issue.

Biggregg24

Sounds like an intake leak. Can you hear it sucking while it's idling. You can spray starting fluid around it to see if idle changes

08soundwave

No there is no intake leak have checked with spray and also have checked maf sensor.

Biggregg24

Any smells?

08soundwave

No at first but now kinda rich smelling was thinking maybe calitic converter

Biggregg24

That's what I was going to suggest

08soundwave

I may un bolt it this weekend but wouldn't that give a code?

Biggregg24

The main cat that's part of the header. Will give a code if removed but only after 10 ignition cycles or so

08soundwave

Ok so the main cat can't be un bolted.

Biggregg24

Unfortunately no. But the sCuba could be causing an issue.

08soundwave

Ok I'll try that thanx

08soundwave

Ok so I dropped the exhaust at collector and still same thing. Any other subjestions.

Biggregg24

I wish you were closer. You could try my header lol.

08soundwave

Thanks I'll let you know I'm about to take it to dealer let em. Diagnose it.

Biggregg24

Good luck.

Biggregg24

Oops. Phone lol

Biggregg24

Well. Find anything out?

08soundwave

Well its at dealership been there sense last Fri. Thry are saying the belive it's fuel. Now just taking them forever to do it.

Biggregg24

Well you knew that much. Why is it fuel lol. Sounds like they haven't done much yet

08soundwave

Yeah they saying it may be water or diesel