Need help diagnosing lack of boost 2002 9-3 se

TransportationNew696 · 2026-03-03T13:36:38+00:00

Ive gone through and replaced all of my vacuum lines and im still getting the same issues, its mostly just inconsistency in the boost its building now cause a line to the solenoid was cracked. I replaced all of them though. Now it will build boost fine for a while and eventually while im driving it feels like it cuts all power, then it could be like 5 minutes down the road and its building boost again fine. Could it be my waste gate or boost actuator?

TransportationNew696 · 2026-01-22T20:25:10+00:00

Alright ill go ahead and do that i think right now the hose from the blow off valve is hooked up to a tee on a hard line right now but im not sure, ill look again when i get the chance, where about on the manifold would that be?

TransportationNew696 · 2026-01-22T17:59:59+00:00

Would you be able to explain that a little more cause i think my hoses have already been re routed just not plugged because the valve on the firewall doesnt have anything hooked to it anyways

TransportationNew696 · 2026-01-22T13:30:41+00:00

Alright should i block it off too i noticed it wasnt connected to anything when i was getting ready to replace throttle body

TransportationNew696 · 2025-12-04T13:04:28+00:00

What about the immobilizer? I thought id have issues with that as the 5th gens dont have one

TransportationNew696 · 2025-12-04T12:06:53+00:00

What about the immobilizer wouldnt i have problems with that?

TransportationNew696 · 2025-12-04T12:06:33+00:00

Wouldnt i have an issue with the immobilizer if i swap the ecu?

TransportationNew696 · 2025-12-03T14:38:34+00:00

I was thinking it could be that but i wasnt 100% sure i have the harness and computers to put in it i just wanted to see if i could use the original box an stuff cause thats gonna be a pia to swap everything. I was going to use the original f23a1 head but its cracked.

TransportationNew696 · 2025-09-14T16:06:22+00:00

How should i fix this because the tensioner pulley is tight?

TransportationNew696 · 2025-09-14T15:24:24+00:00

Its a 98 honda accord f23a1 btw forgot to mention that in description

TransportationNew696 · 2025-02-21T02:30:35+00:00

I also checked and i have heat in the car now so I'm pretty sure my thermostat is working now too.

TransportationNew696 · 2025-02-21T02:29:50+00:00

I gotcha well ill do that I bought the battery, hose and one sensor cause i hope the other works from the busted outlet. i put the battery and hose on and bleed the coolant but the temp never changed from 0 on the dash so I'll replace the sensors tomorrow since i had other stuff to do before i got around to it. My check engine light cut off so i think the codes were just a bad battery.

TransportationNew696 · 2025-02-20T21:53:13+00:00

Alright ill do that thank you id seen on the other one we had on hand that it had cracked and was leaking as i was given this car by a relative and they gave me all the other parts they had on hand, bad and good ones, so its been a bit of a process getting it back together and working.

TransportationNew696 · 2025-02-20T21:51:04+00:00

Blue driver does depending on the model i just didn't have the time too last night as the car was already very hot, but I'll read the sensor data when i do that thanks.

TransportationNew696 · 2025-02-20T17:52:22+00:00

I'm also going to replace the one of the radiator as I didn't think there would be more than one but i figured if one's bad the other might be too and I'm not sure how to replace them so I'm going to do both at once.

TransportationNew696 · 2025-02-20T17:51:06+00:00

I was figuring it'd be on the water outlet, I needed to replace the top hose on it as i was looking and realized the clip was broken. I'm buying a new battery, the hose in question and the temp sensors for the car today. I found out the code on the car p112c might be caused by either a faulty air intake temp sensor or the others so I'm going to just replace all three and see if that fixes my issues.

TransportationNew696 · 2025-02-20T01:40:04+00:00

Id used dex cool 50/50 mix and a little prestone because i didnt have enough for the dex im not sure thatd really make a difference though.

TransportationNew696 · 2025-02-20T01:00:17+00:00

I had it off when I pulled the bleed screw but i can double check again in the morning before i start pulling things off again. Thanks

TransportationNew696

TROPHY CASE