[Azureblue]

Please bear with me - I replaced the alternator and a couple of the turbo control hoses. After re-connecting the battery, the car ran great but the turbo would not spool up or spooled up weakly. The car threw a 1238 code. So I double checked my work - I had to R&R the crossover pipe to intercooler hose, and that was on tight. I checked the 2 hoses for the turbo control valve that I replaced - the one to "fresh air inlet" on the large plastic hose from air cleaner to turbo, and the one to the wastegate, they are on solid. I replaced the "red"hose - turbo housing to control valve, but no go. I replaced the valve itself - nope. I checked to purge vale on the fan housing, too, and that did not help. Car starts great from cold, idles smooth and nice acceleration for a non T car. The only thing I wonder is, maybe I pushed or wiggled too hard on the fresh air inlet nipple? Isn't the mount for the inlet pipe supposed to be a little flexible?
Plus, if I disconnect the MAF, the car dies.
I looked at my work again to make sure I didn't miss something and all looks spot on.. But I know I'm missing something - ideas? Anybody in the Winston Salem, NC area I can talk with?

Thanks in advance

 

[volvogod]

1238 is turbo control valve, flow fault.
Check the hose routing. If Volvo hose, there will be a color dot on the hose and valve.
Check all of the turbo and intercooler hoses for being connected.
The big rubber hose below the oil dipstick can get a hole in it on the bottom side from oil leaking down over it.

 

[Azureblue]

Thanks - I used this diagram to check my connections. I re - re- checked - Blue to fresh air intake nipple, yellow to wastegate, blue to turbo housing. I got some carb cleaner spray and sprayed it on the connections and nothing changed the idle. IDK which big hose you are referring to - do you mean the cross over pipe to intercooler hose? If so, mine is in good shape, but I can always check it again..

 

[volvogod]

Thanks - I used this diagram to check my connections. I re - re- checked - Blue to fresh air intake nipple, yellow to wastegate, blue to turbo housing. I got some carb cleaner spray and sprayed it on the connections and nothing changed the idle. IDK which big hose you are referring to - do you mean the cross over pipe to intercooler hose? If so, mine is in good shape, but I can always check it again..

Yes, the intercooler hose.

 

[Azureblue]

Yes, the intercooler hose.

the hose doesn't leak and is on soild

 

[Azureblue]

Just to make sure, I pulled the hose, inspected it, and tested it for leaks. It doesn't have any weak spots or bulges. I checked and cleaned the places the hose goes on to, and made sure it went on correctly. No luck..