My main fuel pump on my '86 245 is starting to get a louder whine than it ever has before. From the best I can tell, my in-tank pump was not running for at least two months (if not longer) and I am sure that the cavitation has done damage to it. I have a like-new pump on my '80 242 (the car doesn't run). The '80 has the old K-Jet system and my '86 has the LH system. Will this older style fuel pump work on my '86? I have the pump off of the '80, but I haven't taken the one off of my '86 as it is my daily driver. Any help appreciated.

Thanks,
Lance

This is the wayFCP Groton breaks down the various pumps:

0580254996 New Fuel Pump 75-79 (Main Pump) $239.67 Bosch
0580254949 New Fuel Pump 80-82 w/ CIS Injection (Main Pump) and all 81-85 Turbo's $125.00 Bosch
0580464022 New Fuel Pump 1982 w/ LH Injection $145.00 Bosch
0580464068 New Fuel Pump 83-93 (Main Pump) except 81-85 Turbo's $125.00 Bosch

So if nothing else, it's a different part number. I don't think the
earlier pumps make as high a pressure as the LH pumps. Is the in-tank pump fixed now? If so it should quiet the main pump significantly.
--
Rob Bareiss, New London CT ::: '86 244DL- 215K, 87 244DL- 230K, 88 744GLE- 198K, 91 244 180K

My in-tank is indeed now fixed, but the main pump is still loud. It gets louder on hot days after I have driven it for a while. But $125 is not bad for a new pump. I was thinking that it cost $150 for a rebuilt pump and $300 for a new Bosch pump, so I'll have to give FCP Groton a call and get a new one. Thanks for the help. Slowly but surely I am getting my '86 whipped into shape. Next things on the list are rear suspension bushings and engine harness. Tackled timing belt (first time) this weekend. Did in-tank last weekend. Ultimate goal - bulletproof brick! The body is good (car never has been wrecked), the interior is in good shape (a little cracking on the driver's seat and typical dashboard cracking are the only detractants to the interior), and it is a wagon with the third seat. I hope my luck holds out - I bought the car for $1,400, have spent about another $300 on it so far along with parts off of my two junkers.

Thanks,
Lance

You've already made the right decision to go with the proper Bosch part number replacement, but for further info, the CIS pumps operate at significantly higher pressure than the LH-jet units, so they're not really interchangeable.
--
Bob (81-244GL B21F, 83-244DL B23F, 94-940Sedan B230F)