I installed the pump made for the turbo model into my 89 740 16v today and all went fairly well.... The turbo pump is longer than the original (maybe an inch?) and slightly larger around.... But it all fit in ok... I replaced that little "accordian" hose with a straight piece of 3/8" fuel line just incase (also to support it a little because i dropped the unit and cracked the plastic piece! Ouch!)... it required a little trimming at the bottom where the pump goes in.... Overall i notice a significantly smoother idle... No bumps in the idle with it in gear with the A/C on (much better!) ... maybe slightly brisker acceleration, but i need to check the fuel pressure, I don't think all the HP is there... Although, after i got it in, the car sputtered a little bit on aceleration (air in the lines? or just low fuel??) after i filled it up, it's all better... I hope i didn't put the strainer on in the wrong direction (does it make a difference??) We'll see at the next tank of gas soon enough (75 miles today and the gauge almost reads 1/2! ouch!) I also noticed that there's baffles in the fuel tank... thought that was a little strange for a regular car to have!

Cliff Scott
89 740 16v

75 miles and a half tank means you put the strainer on the wrong way and wil continue to get incorrect readings off teh sender. Basically, if you don't put it all in EXACTLY right and make sure its down the sender will ride high. When it rides high it thinks it is sitting at a higher level than it is, and thus the arm's 0 position is 1" off the bottom of the tank.

Basically, this means that you will notice the car drives EXTREMELY well on the reserv tank now, probably because your "reserve tank" comprises 6-7gallons or so. ;)

No worries btw, you can pull it and reseat it at your liesure. The only issue (as long as the filter and elements are in contact with the bottom of the tank and inside the baffles) is that your gauge will read lower than the actual tank.

-rt

there is no way i could screw the sender up... it's a float inside a tube... and it's sitting perfectly vertical.... Before this was my mileage anyways... I have a best mileage of 19 MPG so far (worst under 14).... although driving today (and yesterday) it seemed like it was lacking power... today while driving at the 1-2 shift, it let out a large blue cloud (could this be oil? Mobil1 doesn't burn blue, does it?) but after that it ran fine... much better power.... before i was merely referring to the direction of the strainer, but i don't think that really makes a difference...

Cliff Scott
89 740 16v