Merc 200 problem?

[CTFSHWHISKER]

Actually you can get them from rapair,i replaced a few at the school i went to at louisville tech.They can redo yours and you can have them reprogram them or just send yours as a core and they'll send another.It may be an ecu but there are sensors that can cause the same problems.IF you do decide it may be the ecu maybe you know someone who will let you swap and run before you buy one.
If you want to,check out a story in bass and walley they did about the reprogramming of fuel and timing and rev limiter,it picked up the overall performance of a ranger very respectfully,especially in the fuel saving category.

[cman]

My guess would be the air temp sensor is whats bad. I'm not sure how to test it though
There are no fish in this pond

[stoner]

Click the Merc forum link on BassBoatCentral, those guys are pretty good. By the way how old is you're 200?
Stoner:)

[cman]

Its not mine. I'm just working on it. Its a 99 model though. I've posted it on bbc but no replies yet thanks.
There are no fish in this pond

[CTFSHWHISKER]

Most sensors are tested using an ohms meter,you will need to find the base ohms reading then you will need to apply a temp change and note the ohms readings to see if it in spec or not,according to the merc manual,i have one but i am getting ready to put a water pump on my truck i will check the procedure and post it to you later this evening.

[CTFSHWHISKER]

you may get a reply in a month or two,i have asked things before then get a reply months later.