Help... BLOWN MAF....

While sorting out a mixture issue, the CO screw fell out and heard a loud pop inside of it. I took the MAF apart and found it full of muck and water and a burned out hole in the jell-o insulator with damage to the chip below.

If you have a MAF with a broken wire, I'd be keen to buy it from you - please PM me with a reasonable price expectation.

I can't find any reasonably priced Bosch 0280 212 018's (used in all Motronic 2.5 and 2.7 Mondial T's and 348's as Ferrari part number 136374) around and was wondering if these were interchangeable with the 355 with Motronic 2.7 Bosch 0280 213 012's (Ferrari pn. 154916)

I found that the Bosch MAFs starting with 0280 212 018/9/22 all have the same operating volumes and flow range temperatures "HLM 2/4.7 155°" does this make them interchangeable?

I read ND's hypertechnical post, but could not find any of the SAAB references (I'm going to try a scrap yard tomorrow).

In the interim, Looking at the Motronic 5.2 based 355, I "crosswired" the MAF connectors, and voila' the engine runs perfectly, it would only run on one bank (the exhaust was cold on the "down" bank 5-8 for proof) otherwise. The cross wiring connects the two MAF connectors at (roll the rubber sleeve back, expose the connector pins, solder a wire across both connectors and roll the sleeve back up) the CO screw (Red/White) on Pin 6, and the signal out (orange) on Pin 5. The other pins deliver supply power, ground, hot wire burn-off and signal return.

If you blow a MAF on the road, this can be a quick fix to get you home. Clearly in a closed loop engine with good O2's and in a well maintained engine, the airflow should be nearly identical between the banks. The fueling is predominantly done by way of O2 sensors, and the "shared" MAF signal is fine for partial throttle. While the 355 is designed with this, the F119 based cars were not. As a result this solution can only be temporary and should be returned to their standard configuration ASAP.

Marco

 

Any idea of where one can get them and potential part number translation?