1998 volvov70 p0455 code

tom4342 · Post by **tom4342** » 15 Nov 2014, 16:31

Large evaporative leak, Ive been battling this leak forever started as a small now large i found a spilt hose on the purge tank in the fender well and replaced all of those lines and just about every small vacuum line i could lay my hand on,replaced the gas cap,purge valve,air injection pump switch,smog pump,air pump control valve,check valve etc car runs great just sick of the check engine light popping up after a hundred miles or so,suggestions?

Post by **scot850** » 15 Nov 2014, 16:42

Not sure of this, but I recall there are vacuum pipes at the rear of the car at the fuel tank. Seen pipes split there and can be hard to see.

Neil.

Post by **stephansvolvo** » 15 Nov 2014, 18:46

I'm chasing the same one. The only place I haven't gotten into is the top of the tank at the rear of the car. Access from the top coming through the rear behind the back seat area.

Post by **jreed** » 16 Nov 2014, 06:30

It sounds like you've checked most of the usual suspects. I don't know if the '98 has the roll-over valve, but on my '97 a damaged rubber connector hose at the roll over valve was the culprit for the 0455 code. On the '97 the roll-over valve is located near the fuel filter at the RR corner.

Post by **erikv11** » 16 Nov 2014, 09:01

My 98 has a rollover valve, definitely check the hoses back there.

tom4342 · Post by **tom4342** » 16 Nov 2014, 18:39

yep soon as it stops raining

Post by **mecheng** » 17 Nov 2014, 07:14

Sounds like you covered all the main culprits, I would make a smoke tester or get it tested at a shop.
I have the same problem, but I'm not sure I fixed it, the code takes very long to appear on my car.

Post by **erikv11** » 17 Nov 2014, 08:41

After the J hose, the second most common cause of p0455 is probably the hoses at the rollover valve. It's not a fringe suggestion, I would say he definitely hasn't covered the main culprits ... not yet!

tom4342 · Post by **tom4342** » 22 Nov 2014, 11:14

this is what i found isnt there two hoses on this? if so i have no idea where the other is or where it goes.I put the hose and nut on today.

tom4342 · Post by **tom4342** » 22 Nov 2014, 12:04

found the hose on the back side coming off the valve didn't feel an issues which doesn't mean there isn't, the filter looks like fun to replace, well will just keep looking.