c200 1994 is it HMF or PMS
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c200
http://http://blog.obdtool.co.uk/launch-creader-crp129-vs-crp123-black-vs-crp123-red/
please can you kindly visit this link !! and see the spec of the scanner !!
please can you kindly visit this link !! and see the spec of the scanner !!
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c200
and yes i removed the valve cover and check the timing marks they are in correct positions and i check for the crank sensor magnet also for debris , dirt or dust but it was also clean !!
and one more thing russel this person had successfully connected a cheap obd2 elm327 which i also have , and he was success
http://www.hfmscan.com/en/mercedes_diagnose_ELM327.html
thanks
and one more thing russel this person had successfully connected a cheap obd2 elm327 which i also have , and he was success
http://www.hfmscan.com/en/mercedes_diagnose_ELM327.html
thanks
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not a merc
Backfire into intake is a sure sign of lean mixture.. to me non of those scanners look like they will work.. ( i use x431) but the hfmscan looks interesting and cheap. Maybe give that a try. Download hfmscan.exe and use a KKl cable. Looks like it will work.
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c200
unfortunately that scanner is out of my budget and right now im so frustrated and lost spending too much money on this !! i could have bought a new engine with an ECU :/ !!
any other scanner you think that could work ?
any other scanner you think that could work ?
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c200
yeah !! i have the OBD2 ELM 327 with the 38 pin adapter !! i still couldn't try that on my car !! but i tried it with my uncles car whic is a c220D 1994 but it dint show any data !! it said no OBd interface !! may be because of diesel and different engine management system !!
ill try and let you know !! thanks you friend !! and please check your email !! i
ill try and let you know !! thanks you friend !! and please check your email !! i
Last edited by Kanishka Prasad; Jan 3, 2017 at 03:20 PM.
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not a merc
Maybe u connected wrong. ALL w202 models were diagnosable from start of production. Which is around 93 I think. I have never ever seen a hfm pms or edc on 202 that's not diagnosable. I have worked on hundreds of them. I have never used hfmscan but from what I see it looks good
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mb
Hello all!
1. your HFM ECU 2.0 Japan.
2. your ECU have not immo.
3. ELM327 will not read your engine.
4. Use VAG COM 409.1 (cost 5$ on www.ebay.com) or any USB KKL for read your engine with hfmscan.
5. On my site is proposed modified ELM327, which supports only the old Mercedes and nothing else...
Mike.
PS: https://www.youtube.com/results?search_query=hfmscan
1. your HFM ECU 2.0 Japan.
2. your ECU have not immo.
3. ELM327 will not read your engine.
4. Use VAG COM 409.1 (cost 5$ on www.ebay.com) or any USB KKL for read your engine with hfmscan.
5. On my site is proposed modified ELM327, which supports only the old Mercedes and nothing else...
Mike.
PS: https://www.youtube.com/results?search_query=hfmscan
Last edited by hfmscan; Jan 4, 2017 at 03:58 PM.
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c200
Hello all!
1. your HFM ECU 2.0 Japan.
2. your ECU have not immo.
3. ELM327 will not read your engine.
4. Use VAG COM 409.1 (cost 5$ on www.ebay.com) or any USB KKL for read your engine with hfmscan.
5. On my site is proposed modified ELM327, which supports only the old Mercedes and nothing else...
Mike.
PS: https://www.youtube.com/results?search_query=hfmscan
1. your HFM ECU 2.0 Japan.
2. your ECU have not immo.
3. ELM327 will not read your engine.
4. Use VAG COM 409.1 (cost 5$ on www.ebay.com) or any USB KKL for read your engine with hfmscan.
5. On my site is proposed modified ELM327, which supports only the old Mercedes and nothing else...
Mike.
PS: https://www.youtube.com/results?search_query=hfmscan
and Russell is also helping me alot with this problem !! and i really appreciate for both of yours tips and help specially your time !!
so as far as i have diagnosed i feel that it lean !! backfire at intake as russel mentioned !! so until the scan comes can you roughly tel what areas are responsible for this particular problem !! with experience of both of you
i replaced the fuel pressure regulator from the company !! 250$ :/
thank you !! guys !!
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From: Cape town
not a merc
Well I think your scan test with relevant codes and looking at live data is going to help us fix your issue. A lean mixture is almost always caused by an airflow sensor. But I have seen a similar condition from a faulty o2 sensor. Just unplug o2 sensor and retest, other causes of lean mixture will be low fuel delivery. A coolant sensor that over reads. Or a large air leak. Very retarded ignition timing can also do it but the only way ign timing can shift is if the segments on the flywheel is damaged or the flywheel is fitted incorrectly in relation to the crank. Bad throttle can also make the engine feel lame. But all these things will be quickly diagnosed with hfmscan. Goodluck
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From: Cape town
not a merc
Let me know how the hfmscan works. I may order hfmscan myself. Although I work on many different hfm systems. So not sure what files I would all need. I already have KKl cables. I.'ll test when I am back at work.
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c200
probably ull need the hfmscan.exe as i think !! and the drivers !! i saw mikes posts on his website http://www.hfmscan.com/en/mercedes_d..._kkl_soft.html!! thanks alot mate !! and yes please do share the new results !! im learning alot from you !! and lets hope this thread will help some one else too !! thanks again bro !!
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c200
Russel i remove the first o2 sensor socket and the inlet manifold backfire dint occur and black smoke also stopped !! but the engine miss fires and again the VVT solenoid is not working i'm sure i rewired it !! it gives 12 v from one pin ground to earth but when i keep both multi meter probes one connector pin 1 and 2 its shows me 0.1 - 0.2 varying voltages !! and once its started ti work but gave a rattling sound !!!
the HFM ignition retard knob is at 7 in mine !! i have an engine miss now !!! the mixture problem is solved as i feel because the spark plug are whitish color !!
the HFM ignition retard knob is at 7 in mine !! i have an engine miss now !!! the mixture problem is solved as i feel because the spark plug are whitish color !!
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From: Cape town
not a merc
Trim plug should be at pos 1
Vvt should have 12v on one of the terminals with ignition on at all times.
The ground is only there when the ecu decides to vary the timing.
Forget about vvt for now it will not cause a misfire. Misfired occur more easily with a lean mixture.. when does it misfire? At idle all the time or only under load? Next step determine what cyl is the misfire on... swop the suppressor and or coil to a good cylinder to see if misfire shifts to another cyl... you can pin point your problem that way. Leave o2 disconnected for now.
Vvt should have 12v on one of the terminals with ignition on at all times.
The ground is only there when the ecu decides to vary the timing.
Forget about vvt for now it will not cause a misfire. Misfired occur more easily with a lean mixture.. when does it misfire? At idle all the time or only under load? Next step determine what cyl is the misfire on... swop the suppressor and or coil to a good cylinder to see if misfire shifts to another cyl... you can pin point your problem that way. Leave o2 disconnected for now.
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mb
regulator price 30-50$HfmScan through this adapter reads any 104 and 111 (HFM \ PMS) at once and do not need to buy anything more.
plus engine diagnostics with the phone\tablet...
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c200
Trim plug should be at pos 1
Vvt should have 12v on one of the terminals with ignition on at all times.
The ground is only there when the ecu decides to vary the timing.
Forget about vvt for now it will not cause a misfire. Misfired occur more easily with a lean mixture.. when does it misfire? At idle all the time or only under load? Next step determine what cyl is the misfire on... swop the suppressor and or coil to a good cylinder to see if misfire shifts to another cyl... you can pin point your problem that way. Leave o2 disconnected for now.
Vvt should have 12v on one of the terminals with ignition on at all times.
The ground is only there when the ecu decides to vary the timing.
Forget about vvt for now it will not cause a misfire. Misfired occur more easily with a lean mixture.. when does it misfire? At idle all the time or only under load? Next step determine what cyl is the misfire on... swop the suppressor and or coil to a good cylinder to see if misfire shifts to another cyl... you can pin point your problem that way. Leave o2 disconnected for now.
now my main problems are
engine miss
wont rev more than 4300 rpm
poor throttle response !!
thank you
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c200
regulator price 30-50$in this case it is better to buy ELM327 WIFI\USB for mercedes.
HfmScan through this adapter reads any 104 and 111 (HFM \ PMS) at once and do not need to buy anything more.
plus engine diagnostics with the phone\tablet...
and yes the fuel pressure regulator i replace i bought it from the mercedes company !! it was around 25000 LKR from my currency which is equal to 250$ because the after market parts we have in Srilanka is not that much quality !! so i wanted not to have loop holes again in my new replacements so i cant diagnose it !!
thank you for the reply appreciate it !!
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From: Cape town
not a merc
It's normal to have a misfire at 4300 RPM if the car is stationary. It's to protect the torque converter. Wait until your HFMscan works. That way we will see what is wrong with your TB.
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mb
Good!
old Mercedes has its own diagnostic protocol (not OBD2). I wrote new firmware for the microcontroller, which is installed in the adapter ELM327.
so "my adapter" can read the old Mercedes and can not read modern car (OBD2)
so "my adapter" can read the old Mercedes and can not read modern car (OBD2)
