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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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940 Diagnostic socket (imitation OBDII)Views : 20986 Replies : 46Users Viewing This Thread : |
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Jan 5th, 2011, 02:19 | #11 | ||
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It could also be true that Autodata doesn't know as much about these cars as we do. Luckily for us we have the knowlege base on this and other forums. I only came up with my design thanks to earlier work done by other forum members Apart from the code reader write-up in the articles section, I found this pdf which indicated that you could also read cruise and abs codes. Quote:
I wouldn't call it crude, but simplicity has it's benefits. The Bosch LH injection is apparently regarded as being robust and reliable, more so than the systems used on the later Volvo models. That said, LH2.4 has the ability to learn and adapt to differing levels of boost. My lpt is perfectly happy at over double its factory boost setting. I doubt you could do the same with a later V70 without a re-map.
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Gavin 1997 945 CD (B230FK) [RIP: 1991 945 Turbo (B230FT) 1992 945 SE turbo (B200FT)] |
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Jan 5th, 2011, 12:44 | #12 |
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It is crude. Running all injectors off one wire is crude. Using a coil/dizzy arrangement is crude.
Oddly the wiring diagram also indicated a cold start injector....Whilst I havent looked, I'll assume it doesnt actually use one Every car running air mass metering has a good ability to run most boost than standard. That doesnt mean it is running optimally. But they can all do it. And I did chuckle when I first stuck a bosot gauge on....mine was only making 3.5psi !! Any wonder it didnt even feel turbocharged. Whilst I know the online write up indicates you can push an LPT to around 10psi, I would tread carefully there. Even on mine at 9psi I could audibly hear detonation in the cabin on 95RON fuel. If I can hear it there, it is already quite severe. Havent yet stuck proper detonation detection devices on or a wideband though to see where the onset of detonation actually occurs on mine. Whilst it is crude, on the std car it does drive very well and smoothly, so it is still effective. But on a car of 1998 vintage...it is still old tech. Last edited by stevieturbo; Jan 5th, 2011 at 12:52. |
Jan 5th, 2011, 14:45 | #13 | |
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Last Online: Apr 9th, 2024 21:44
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Location: Holywood
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The only ones I have seen that work with the 940 are specialist 1 off's or led flasher units like the above. I suspect the specialist ones are just reading the flashing pulses anyway. You must have an 96 model. My 95 does not have the socket, but the 96 does. I think it was added then for US market, but failed to meet the requirements and you don't get 940s after 95 in the US. |
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Sep 30th, 2012, 02:14 | #14 | |
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Last Online: Aug 27th, 2019 00:49
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Location: Ilkley, we(s)t yorkshire
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Any idea where the connector is located within the car. I have a P reg (1996/7) 940 LPT estate and It 's showing the ABS warning. Normally the car is a dream. |
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Sep 30th, 2012, 11:27 | #15 | |
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Gavin 1997 945 CD (B230FK) [RIP: 1991 945 Turbo (B230FT) 1992 945 SE turbo (B200FT)] |
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Oct 1st, 2012, 01:03 | #16 |
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I had an ABS problem on a 323i , in the end I just tested the sensors with a meter. The faulty one was OC. Anything else you probably need to swap out the ABS module.
Never had any need for a code reader on any of my cars, but I did use the Autoenginuity on a friends Ford, on which basic stuff like coils break... lol On the Volvo, the sensor tips do seem to get corroded alot (long life car) so check the visible condition first, then pull the plugs off and check the sensors are still in circuit with a resistance check. |
Apr 8th, 2013, 12:16 | #17 |
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Last Online: May 22nd, 2013 10:42
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Is someone able to tell me if this OBDII port on the arm rest of the 940 (I have the 1998 945 Classic, manufactured 97) could be used with a ELM327 WIFI OBDII reader that is on sale on eBay and is used to send data to smartphones over wifi?
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Apr 8th, 2013, 13:42 | #18 | |
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Last Online: Aug 2nd, 2018 19:03
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Location: Essex
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It doesn't matter how sophisticated you make the ignition/injection system if its still got a 50 year old 8v four banger powering it. As has been pointed out there are very few family saloons, especially of the 940's age, that use an ECU that can adjust the maps for much higher boost levels than stock and higher octane fuel all by themselves, that's normally the preserve of high performance cars. Complication for complications sake it annoying and pointless, if a simple solution works then keep using it I reckon, I like to laugh at my mates when they have to buy new and expensive coil packs and such like on their more "modern" cars that seem to break on a regular basis.
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2.3 Turbo "Celebration" |
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Apr 8th, 2013, 13:44 | #19 | |
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No it can't, I have one and "Torque Pro" on my Galaxy Note 2 and it wont talk to the ECU, they only work for OBD 2 cars, will read my mates Skoda VRS just fine but its completely dead in the Volvo.
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2.3 Turbo "Celebration" |
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Apr 8th, 2013, 15:22 | #20 |
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Last Online: May 22nd, 2013 10:42
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That's a real pity! I guess the protocol ISO being used is different. So there's no adapter or any "software upadte" that will make this possible, right?
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