The ODBII gave the following-Two were P0135(O2 sensor), then there was two P1026, a P1031(which all read Mnfctr cntrl fuel air metering.) I had platinum bosch plugs, can I buy some that aren't platinum but are gapped properly?

Recapping again before my newest post. Couple months ago car idled roughly upon start lack of power and surged on occassion-especially low idle in gear. Opened hood checked vacuum hoses and connection and discovered disconnected melted hose elbow on passenger side of motor as well as broken PCV pipe...

Yeah, I got my gasket from the local volvo dealership, there was also an o-ring kit including the spacers that they sold me when I asked for o-rings. I did notice this gasket was paper and the original was a metal one. Anyway, I'm worried about the damage caused to the engine block threads. Do you t...

Car still idling bad, revs to approx 3500 rpm at max, and still seems to be a vacuum leak. Took everything back off yesterday (3rd time) all hoses and sensors are reconnected not leaking. However, it still appears that the intake manifold is not mating up tightly with the engine(looks like fluid ran...

Just updating. Tried the vaseline on the o-rings and seals to see if that's where the leak was, but it didn't change anything. Also got some fuel. Ordered the o-ring kit just to be safe(actually I think I damaged one pulling the rail out this last time.). Taking everything back off in the morning to...

I wasn't sure where the IAC valve was located exactly but I checked everything thoroughly and tried what you suggested. Yet still having the same problem. This time I took it to local parts store and had the ODBII codes pulled and there were six codes. Two were P0135(O2 sensor), then there was two P...

Ok, that's what I was doing when it first started running badly, I cleaned the throttle body and that part of the accordian hose because of all the gunk in it and I saw the pipe assembly to the oil seperator was broken, on top of that the small hose elbow on the passenger side of the intake manifold...

I will check the idle air control valve tomorrow as well as seeing whether the fuel injectors are pressed in properly. Where is the PTC valve located?

I disconnected the fuel line, removed the intake manifold and replaced everything involved in the pcv system(pipe assembly, oil seperator and all connecting hoses), however when I cranked the car I still had the initial symptom i had when found the broken pcv pipe assembly and the car was idling rou...

I got the injectors out and everything is good. Now what I'm not able to do is get the quick-release fuel line coupling(described by my haynes manual) to release so that I can remove the rail, I definitely appreciate your help.