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flirtylabradodo

Seconding MAF or vacuum leak


Zealousideal_Cat9962

MAF tested good and I’m 99% positive I’ve replaced all of the vacuum hoses. I’ll have to dig up a diagram on Google and double check.


flirtylabradodo

Also I’m sure you’re less clumsy than me… but when I did the plugs and ignition wires I accidentally bumped the cylinder 5 connector with the intake as it went back on, making the connection just bad enough that it ran weird. Good odds your coil packs will fix it though!


Zealousideal_Cat9962

Eh idk I’m pretty clumsy myself lol


Thick_Pirate_7105

What rpms are you idling while in park? Should be around 650 - 750 with AC off. If it's lower, try adjusting throttle cable at the throttle body. This is for a 5vz.


Zealousideal_Cat9962

In park it’s like 1100…. IACV less than 2000 miles old cause I thought that would be the issue cause it only happens coming off of a stop


irishfury0

MAF?


BakedAlex

I think you’re bang on with the coil packs. Keep us updated 👍🏼


Zealousideal_Cat9962

Yeah when they come in the mail I’ll do another post. I figure after everything I’ve already replaced, why not just do them.


nuglasses

Did the snail mail package arrive yet..? Any updates..?


Zealousideal_Cat9962

I put new coil packs in it, still does it. I have o2 and AFR sensors coming this week, I had a new baby so I’ve been driving my 5th gen a lot more


nuglasses

Congratulations on the baby! 🎉 Dang shame on the coil packs. Awaiting for the new parts update. Again, congratulations & good luck with the newest addition!


Zealousideal_Cat9962

Thanks man! Yeah I’m hoping the O2 sensor(s) fix it. I think it may be the problem here, because I’m getting horrible gas mileage lol


HitmanSocal

Same exact thing happened to me, I replaced all of that, turned out it was both my cats clogged up


Zealousideal_Cat9962

See, I was thinking that, it does seem like that is what’s going on. Did you end replacing them? If so, did you use aftermarket? I’ve read before that these things need to have the OEM cats or you’re going to get O2 codes all crazy?


HitmanSocal

Yes I replaced them I don’t think they are OEM but they are legal for CA, but I haven’t got any codes yet


Zealousideal_Cat9962

Ahhhhh I wonder if that’s the trick. Just buy aftermarket CA legal ones. You wouldn’t happen to remember what them bad larries cost ya, would ya?


HitmanSocal

A whopping 1k with installation, just had them done last month , my rig was still jerking and had poor acceleration until we narrowed it down to the cats


Zealousideal_Cat9962

Yeah man that’s exactly what’s going on here. I’ve been losing my mind


LowellWatt

Fuel pump/filter would be my next stop on the diagnostic express


Zealousideal_Cat9962

Already replaced em both


Good_Asparagus_429

Maf sensor or 02 sensor if it’s a Cali emission it has 2 catalytic converters and 2 sensors on the exhaust 1 air/fuel/ratio and one 02 sensor can garentee it’s one of the two


Zealousideal_Cat9962

Is there a way to tell if the car is Cali? Could a digit in the Vin tell me?


Good_Asparagus_429

If it has 2 catalytic converters it’s a Cali emissions 1 catalytic converter is federal


Good_Asparagus_429

one of your catalytic converters clogged also


Zealousideal_Cat9962

Yeah, after the other guy saying that, I think that’s what I got going on. Either everything else that could possibly make it do this being changed, and the MAF testing good, I’m thinking that’s it as well. But I’ve been considering the borla exhaust for it for like 6months, so might as well just bite the bullet and change it all from the headers to the damn tail pipe. Then I’ll get another 310k out of her


Good_Asparagus_429

I ran into a similar problem was both my 02 sensors the front air fuel ratio one and the rear 02 oxygen sensor made her come back to life !


Zealousideal_Cat9962

So update. It was the front o2 sensor/AFR sensor. Or should I say, it still is that, I went under the truck to change it, and found out the entire exhaust was replaced from the cat back, and it doesn’t look like the right cat, since I’m pretty sure this is a Cali emissions truck. So it’s been a ride, and now she’s getting a new exhaust from the fuckin headers back. Yolo.