I'm an idiot, after taking the enormous amount of to time replace my heater core, going through the dash board and everything I cannot figure out which hose goes to the upper and lower nipples on the heater core that is currently poking through the firewall. I assume the hose that I left attached to...

Hi there, I just got done replacing the heater core on my 1990 740 gl. I am in the process of putting the dash back together. When testing my radio (stock radio and amp) I learned that yes it gets power (turns on, I can hear it spinning the cassette...) but the only sound I get is at full volume and...

Hi there my 740 gl was idling rough so I replaced the Idle air control valve. The car runs much better now (doesn't think about stalling out at red lights) but it still idles rough in drive. If I switch to neutral or park the roughness is not noticeable. Any pointers or tips are greatly appreciated.

Here's a dude doing it on a sedan

Okay guys I have become fanatical at getting this figured. Can anyone tell me where the opposite end of the hose that contains the flame trap that connects to the pvc vavle goes? I think it goes onto part of the air filter system? Also can anyone tell me the name of the double metal hose that bolts ...

Okay guys I have become fanatical at getting this figured. Can anyone tell me where the opposite end of the hose that contains the flame trap that connects to the pvc vavle goes? I think it goes onto part of the air filter system? Also can anyone tell me the name of the double metal hose that bolts ...

PCV valve?

Thank you guys

Last week a hose blew in my 1990 740 gl (8 valve non-turbo). Today my neighbor and I took off the exhaust manifold to get to a heater core hose. I replaced the burst hose, but now I realize I am an idiot and cannot remember where 5-6 hoses go. Does anyone happen to have a hosing diagram?

I have been wrenching on my 740 gl (1990) all morning to fix what turned out to be a split hose that I could not reach under the manifold going directly into the block. I am pretty sure this has to do with the heater core. When I finally removed the manifold, I found a plastic box with a single 2 in...