Quote:
Originally Posted by MBD
Thanks Salty, I had a test run. I was told I had two weak but not failed front 02 sensors. I was also told that there was carbon build up as the air is pushed across the cylinder heads and that was more than like the cause of my problem. A error code of po104 comes up. I can reset it and it will stay off while I do 100's of hiway miles but comes back on once I am back in the city. I was given an estimate of $4500.00 to repair. I was told by several others this dignosis was wrong. I read other forums and the fuel regulator was suggested. I do know there are times when the auto runs like new then suddenly the miss when at idle and the hard start. Any suggestions or ideas would be welcome.
Thanks,
MBD
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I've seen that sort of build up on 119 heads. It actually gets into everthing - including valve stems, seats, intake stuff [like the throttle parts EA] and all the crankcase vent tubing that runs all over on that motor. That dirt buildup is usually caused by one thing -
not changing oil and getting the dirt out of the motor on a routine basis. That's why air/fuel/oil filters are so simple yet so important.
To do the job they'll more than likely separate the manifold from the heads, clean it all up with brushes and chemicals, and replace all the tubing etc. IMHO it's a good service for an aging 119. You can also consider swapping the motor, but you'll spend $6k on that with no guarantees unless you get a good reman w/warranty which adds another $15k.
More than likely this is not a simple one-part fix like I'm sure would be more palatable. I had a 119 that failed "automatic throttle take up" at idle, like when switching on a/c or alternator loads etc. The rpm would quickly drop from 700 down to 300, and sometimes stall. Sure enough, the motor had been seriously neglected, where the original owner had driven it for 50k miles on factory oil. I pulled the top end and did all of the above and that was that.
Suggestion [FWIW] - buy another 140 or an old 300E to drive around for like $5k. Then pull the 119 apart and clean it up yourself