OV9

Posted: **Tue Aug 12, 2025 9:39 pm**

I get a lot of my OBD test/reader knowledge from this guy. He really knows his onions and tests just about everything out there. Has a free download too on what to look for.

Posted: **Tue Aug 12, 2025 9:45 pm**

Rich B wrote: Tue Aug 12, 2025 8:28 pm We’ve just come back from trip to France in the van (Saumur (Loire Valley) then Paris). Probably around 1000 miles overall in 30°+ heat.

France seems very popular at the moment. Lots of people I know (and me) visiting this year.

A mate has been touring the south and west coast in this. He has four kids so needs a *little bit* more room.

Posted: **Tue Aug 12, 2025 9:52 pm**

Matty wrote: Tue Aug 12, 2025 9:33 pm
Rich B wrote: Tue Aug 12, 2025 8:28 pm i have Carly OBD reader that i ordered sat waiting. As soon as I get the boy to bed I’ll hopefully find out what the issue is.
Be interested how you get on with this - I always thought they were a bit of a scam, being an overpriced OBD with a fancy front end, but I was suprised to see REPerformance being sponsered by them....would be suprised given their rep they'd be peddling shit.

So yeah, let us know how well it works.

hmmm - i’m more towards the fancy front end direction after first use. It diagnosed some fault codes and did a nice report - nothing too bad, but if you want to clear them or do anything more, you have to pay a subscription. £6 a month, but you have to pay 12 months, which is somehow £110…

i was very rushed and didn’t do my research - i’m not sure i’d go this route given more time!

Posted: **Tue Aug 12, 2025 10:12 pm**

Carly seemed like a bit scammy when I was researching them. The Autel has been fantastic if you need a bit more than the basics. Don't need to mess about with a laptop with dedicated software on anything now. It'll do all the gearbox adaptations and brake bleeding and various calibrations on almost anything.

Posted: **Tue Aug 12, 2025 10:13 pm**

Rich B wrote: Tue Aug 12, 2025 9:52 pm
Matty wrote: Tue Aug 12, 2025 9:33 pm
Rich B wrote: Tue Aug 12, 2025 8:28 pm i have Carly OBD reader that i ordered sat waiting. As soon as I get the boy to bed I’ll hopefully find out what the issue is.
Be interested how you get on with this - I always thought they were a bit of a scam, being an overpriced OBD with a fancy front end, but I was suprised to see REPerformance being sponsered by them....would be suprised given their rep they'd be peddling shit.

So yeah, let us know how well it works.
hmmm - i’m more towards the fancy front end direction after first use. It diagnosed some fault codes and did a nice report - nothing too bad, but if you want to clear them or do anything more, you have to pay a subscription. £6 a month, but you have to pay 12 months, which is somehow £110…

i was very rushed and didn’t do my research - i’m not sure i’d go this route given more time!

Do your research from the link above. I spent £20 for a Chinesium special that's bidirectional and supports loads of models and requests.

Posted: **Tue Aug 12, 2025 10:22 pm**

yeah, i don’t think i’m going to throw good money after bad by signing up to any subscriptions. This one might get chalked up to lesson ls learnt!

Posted: **Tue Aug 12, 2025 10:57 pm**

Do any of these talk to anything more than the main ECU? I've got a cheap chinese unit and the Android Torque app, but it can't talk to many of the systems of modern cars - BIL had an error on his Skoda, and couldn't see/clear an error as it's controlled by another module

Posted: **Tue Aug 12, 2025 11:03 pm**

Matty wrote: Tue Aug 12, 2025 10:57 pm Do any of these talk to anything more than the main ECU? I've got a cheap chinese unit and the Android Torque app, but it can't talk to many of the systems of modern cars - BIL had an error on his Skoda, and couldn't see/clear an error as it's controlled by another module

They will do, your one isn't fully compatible. I have a BMW E prefix code reader which will read all the modules on those BMWs but plug it into another car and it will only read very basic stuff.

Posted: **Wed Aug 13, 2025 9:03 am**

Ive got This - ""

It works with Bimmerlink and Bimmercode for BMW stuff and also works with "Car Scanner Pro" for other marques which does talk to some additional modules. Will let you clear codes.

Posted: **Fri Aug 15, 2025 11:43 am**

Note to self: Carry spare CR2032 batteries in the Defender.

Went to start the car this morning and it immediately turned off. Flashing immobiliser light so knew the key battery was dead. Go back inside and I don't have any CR2032. Start scrummaging around remotes and all sorts of random things. Apple TV remote saved my bacon as it had a CR2032. Phew.

Posted: **Fri Aug 15, 2025 11:47 am**

Mito Man wrote: Fri Aug 15, 2025 11:43 am Note to self: Carry spare CR2032 batteries in the Defender.

Went to start the car this morning and it immediately turned off. Flashing immobiliser light so knew the key battery was dead. Go back inside and I don't have any CR2032. Start scrummaging around remotes and all sorts of random things. Apple TV remote saved my bacon as it had a CR2032. Phew.

air tags use that battery i think!

Posted: **Fri Aug 15, 2025 12:08 pm**

Rich B wrote: Fri Aug 15, 2025 11:47 am
Mito Man wrote: Fri Aug 15, 2025 11:43 am Note to self: Carry spare CR2032 batteries in the Defender.

Went to start the car this morning and it immediately turned off. Flashing immobiliser light so knew the key battery was dead. Go back inside and I don't have any CR2032. Start scrummaging around remotes and all sorts of random things. Apple TV remote saved my bacon as it had a CR2032. Phew.
air tags use that battery i think!

Lots of desktop motherboards too, at least up to around 2018, as that’s probably the last time I opened up a desktop PC.

HTH

Posted: **Fri Aug 15, 2025 1:49 pm**

Coming home from work yesterday evening the 928 cut out at a set of lights just off the motorway. Restarted it and it fired up but definitely didn't sound or feel right. It kept surging the revs at idle up to 3K and was running really rich. Managed to limp the car home. It would idle roughly, light throttle pressure would result in the engine just dying. Revving the engine would result in a lot of smoke and the car was running stupidly rich and as soon as I took my foot off it would cut out. I disconnected the MAF but it made zero difference so I think the MAF has died as it sounds like it's running the limp mode map (which is what the LH ECU defaults to if it gets an out of spec or no signal from the MAF). I've pulled the MAF and I'm sending it to JDS Porsche for testing. He can turn around a recon unit (assuming mine is faulty) next day for £300 which is a lot better than the £1400 I've seen new ones advertised for. Lucky it didn't happen next month on the Scotland trip, I suppose.

Posted: **Sun Aug 17, 2025 7:59 pm**

OBDEleven has been pretty good, 'free' version once you've bought dongle will read and reset errors. You can pay 1 off for a license which allows you to do more advanced stuff.

Posted: **Sun Aug 17, 2025 9:41 pm**

This is what I got a few months ago. Think I paid £16 for it back then. Does everything I need it to.

Posted: **Mon Aug 18, 2025 10:47 am**

Mito Man wrote: Tue Aug 12, 2025 10:12 pm The Autel has been fantastic if you need a bit more than the basics. Don't need to mess about with a laptop with dedicated software on anything now. It'll do all the gearbox adaptations and brake bleeding and various calibrations on almost anything.

Which Autel do you have? The "basic" MaxiSYS 906S MAX appears to be £1600, which seems a bit spendy for DIY stuff.

Posted: **Mon Aug 18, 2025 10:58 am**

Delphi wrote: Fri Aug 15, 2025 1:49 pm Coming home from work yesterday evening the 928 cut out at a set of lights just off the motorway. Restarted it and it fired up but definitely didn't sound or feel right. It kept surging the revs at idle up to 3K and was running really rich. Managed to limp the car home. It would idle roughly, light throttle pressure would result in the engine just dying. Revving the engine would result in a lot of smoke and the car was running stupidly rich and as soon as I took my foot off it would cut out. I disconnected the MAF but it made zero difference so I think the MAF has died as it sounds like it's running the limp mode map (which is what the LH ECU defaults to if it gets an out of spec or no signal from the MAF). I've pulled the MAF and I'm sending it to JDS Porsche for testing. He can turn around a recon unit (assuming mine is faulty) next day for £300 which is a lot better than the £1400 I've seen new ones advertised for. Lucky it didn't happen next month on the Scotland trip, I suppose.

Ah bugger. Any reason you can think of? I guess they dry out. They're not somewhere where water can get to are they?

Posted: **Mon Aug 18, 2025 11:03 am**

Do 928s have DME relays like 944/968s?

Posted: **Mon Aug 18, 2025 12:59 pm**

tim wrote: Mon Aug 18, 2025 10:47 am
Mito Man wrote: Tue Aug 12, 2025 10:12 pm The Autel has been fantastic if you need a bit more than the basics. Don't need to mess about with a laptop with dedicated software on anything now. It'll do all the gearbox adaptations and brake bleeding and various calibrations on almost anything.
Which Autel do you have? The "basic" MaxiSYS 906S MAX appears to be £1600, which seems a bit spendy for DIY stuff.

The cheap non bluetooth version of the MK900, it was £406.

Posted: **Mon Aug 18, 2025 9:58 pm**

Carlos wrote: Mon Aug 18, 2025 11:03 am Do 928s have DME relays like 944/968s?

The DME relay for the 968 is compatible with the 924,944, 964 and 993. I guess if the 928 uses a DME relay, it's different to the one used in the other Porsches being produced around the same time as Andy's car.

I'm not sure it running rich, not feeling right and needing revving matches the symptoms of a failed DME either? The time when I suspected that my DME relay was on its way out, it just lost drive and wouldn't start (starter motor was turning over the engine, to no avail) I waited a few minutes in the lay by I conveniently rolled the into, tried again, and it started up fine. On the drive home, the engine felt fine.

Think the original DME which I took out had a part number beginning with 964. Its replacement has a 993 part number and apparently is more reliable.

OV9

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