My model of MX-5 is: mk2.5 I’m based near: Southend on sea_ I’m looking for technical help or recommendations on: OBD2 checker and misfire Can anyone tell me how to use one, I have an ELM 327 Interface which appears to be telling me there is no fault code even though when the car is hot (ie the pr…

As with most modern manufacturers there is the legally required and the propitiatory ODBII connection delivery. With the Mazda(Ford) the MS-CAN support is where you will likely get the additional propitiatory information your looking for, but its a CAN of worms , pun intended… Take a look at this …

There may be no fault codes stored, is the engine light coming on? Have you checked the basics, spark plugs, HT leads, ignition coils?

Wasn’t the ford involvement from the mk3 onwards?

Hi eaa53, thanks I had a look at that link and realized just how little I know! To summarize does this mean that it’s possible it’s showing 0 faults when in fact there may be one? Thank you kindly for your time. Dave

Good evening roadster Robbie, no engine light coming on, the car revs sweetly to 7k at the start of the drive but after a few miles the problem starts (heat related maybe ? ) I have made a visual check on the plug leads and coil packs an there is no furring or anything visually untoward (I guess tho…

Hi mk375, I have no idea about the Ford involvement re this issue but we did make parts for the I think 121 Mazda which I again think may have been a badged Fiesta probably 20 years ago ! Dave

To answer your question yes its very possible that the proprietary system used by Mazda could have faults recorded that are not shown as a MIL light. The legally required ODB connection will only show a sub set of faults usually the more serious faults. There is also a set of pending fault indicati…

Thanks for a clear concise and easy to grasp answer, I guess I will have to work through more of these things and if no luck take it to a good independent, I’m told freelance Mazda are good, a 75 miles round trip for me though! Many thanks for your help, regards Dave

Sounds similar to the issue I had on my mark 2. Cleared the memory on on the ODB. Ran the car and then tested again. The sequence code indicated a faulty throttle sensor. I found a Mazda dealer who had the ODB knowledge and he confirmed my diagnosis. Replaced the sensor (£135 plus fitting). Problem …

Good evening John, that’s worth knowing I shall give it a try before seeing if there is any debris in the tank causing temporary fuel starvation, a good tip from you for which I am very grateful, once I have sorted the problem I will post my findings. Kind regards Dave.

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Obd2 code checker

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