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#16
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Quote:
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95 SL500 Smoke Silver, Parchment 64K 07 E350 4matic Station Wagon White 34K 02 E320 4Matic Silver/grey 80K 05 F150 Silver 44K |
#17
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Quote:
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95 SL500 Smoke Silver, Parchment 64K 07 E350 4matic Station Wagon White 34K 02 E320 4Matic Silver/grey 80K 05 F150 Silver 44K |
#18
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<
OK One more quick thing I would like you to do.. After you get the code 13, I want you to clear it, run the engine after clearing and then turn it off.. Now, go back to same pin [8]and you should get a Single Flash [ code 1] . meaning code is clear..after the single code, wait 2 sec., hold button 6 secs , turn off key for 10 secs on for 50 secs and restart..That will reset the Memory and base line of the HFM module Take the car for a couple of drives and see what happens.. I still suspect a vac leak [ mat be purge valve] , but do this first, as it a simple thing to do. |
#19
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with my retriever scanner[mb dedicated] i determined that the e.a. had two or three codes that i couldn't erase and when i tried to access the isc it said error no communication.at that point i dug up the etm and traced the wiring back to idle speed computer.i pulled off plug,opened case and bingo burned smell.went and found another for 150 in salvage yard.[i was lucky enough to have similar car in shop and tried that unit first and it worked]
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David S Poole European Performance Dallas, TX 4696880422 "Fortune favors the prepared mind" 1987 Mercedes Benz 420SEL 1988 Mercedes Benz 300TE (With new evaporator) 2000 Mercedes Benz C280 http://www.w108.org/gallery/albums/A...1159.thumb.jpg |
#20
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95 SL500 Smoke Silver, Parchment 64K 07 E350 4matic Station Wagon White 34K 02 E320 4Matic Silver/grey 80K 05 F150 Silver 44K |
#21
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95 SL500 Smoke Silver, Parchment 64K 07 E350 4matic Station Wagon White 34K 02 E320 4Matic Silver/grey 80K 05 F150 Silver 44K |
#22
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OK
I doubt you have a ea module problem as mentioned b/c you have/had no communication codes stored... |
#23
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OK Arthur,,, what in the heck did we do ? Have been driving the car in the heat today and so far,,, I'm knocking on wood here,,, NO surging or missing at all. Does this eliminate the vaccum leak, or has the engine recalibrated itself to compensate ? I mean this thing is running real smooth today. Thanks again.
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95 SL500 Smoke Silver, Parchment 64K 07 E350 4matic Station Wagon White 34K 02 E320 4Matic Silver/grey 80K 05 F150 Silver 44K |
#24
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Either you fixed a leak or the ECU was border-line adapting. Anyway , you are now running proper base line , BUT, you now have to watch to see if the adaptations start to creep up again..That will mean you still have a leak and if it is large enough, the adap will not be able to handle it. The suspect I have would be a purge valve . You may want to take the lines off of it and squirt some WD40 in there..that will clean it and stop it from sticking.. I would do that regardless now. Just cuz they get crapped up . Keep an eye on codes , even if you do not have a CE, as you may catch one before a bunch start coming up.. Just monitor it for a while..as you now have the tool. Another thing I would do is get on the gas up a few hills , [dropping down to 3rd gear to keep the rpms up and so you don't get busted for speeding.] That will clean up the 02 sensor a bit.. Lastly, I have had some luck with these new MAF sensors cleaners ..easy enough to do and can't hurt to give it a quick squirt [ CRC MAF cleaner] The MAF is detrimental to all these a/f mix adaptations......... |
#25
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Arthur,,,, Purge valve ? Sorry, but don't have a clue as to where to find it, but you will only have to tell me once,,, I take notes.
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95 SL500 Smoke Silver, Parchment 64K 07 E350 4matic Station Wagon White 34K 02 E320 4Matic Silver/grey 80K 05 F150 Silver 44K |
#26
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Left , inner fender well..says "MOT" on top
One larger vac line from engine manifold going into it, one coming out that goes to the emmissions canister. It is fed a 12 PULSING sig when car is warm to get the gas fumes from the tank back into the engine for burning..if you place the valve in your hand, it will have a rapid beat to it [ closing/opening] about 6-7 htz. It purges [ regenerates ]the fumes and does not do it in one gulp b/c if it did , it would effect fuel mix and give you your idle problems. So, a trick is to squirt the WD into the valve out port, let it sit for a while , and then run the engine ..that sucks the crap out of the valve and clears it up so it oscillates again..it is just an emmissions device , but when they stick open, they raise hell with the adaptations parameters of the a/f mixture. So, I clean them , regardless , just cuz it is easy, cheap, known fault,... and doing so takes that possible out of the a/f mix equation. Another test guys do when they have adaptation codes pop, is they just unplug the vac line to the purge and cap it..then run the car a few days and see if the adap gets back to norm..that verifies internal leak at purge..only problem w/that technique is you will bring on a purge code..but you know why, so you just clear it later.. |
#27
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Took the valve completely off the fenderwell Arthur and the inlet line was plugged with a ton of tiny carbon like particles that came out,,,, probably a teaspoon full. should I just get a new valve or do you think cleaning it will suffice ?
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95 SL500 Smoke Silver, Parchment 64K 07 E350 4matic Station Wagon White 34K 02 E320 4Matic Silver/grey 80K 05 F150 Silver 44K |
#28
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If you have it off, get some power to it [I think that is only 6v]. Put a hose on the inlet port and blow through it with a few psi while you rapidly on/off the power . That should clear it good and also tell you if it is open/closing as it should..you can even just blow through it w/lung pressure by mouth..give it the mouth job....
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#29
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Gave it a good cleaning Arthur,,,, I'm beginning to feel real good about this. I am assumming that if the valve is bad or not working properly, it will throw a code ? On the built in reader or use your code reader ?
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95 SL500 Smoke Silver, Parchment 64K 07 E350 4matic Station Wagon White 34K 02 E320 4Matic Silver/grey 80K 05 F150 Silver 44K |
#30
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Purge can come back in the DM or pin 8 of HFM module.
It will come back as a purge code , but if it is causing MAF adaptations , it can come back as a rich/lean fuel trim code..so check both. |
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