OBD II diagnostics

Hi All,

Can somebody tell me if I have this right? 96 is the first year to introduce OBD II to metros. A special scan tool that fits in just under the steering column is the way to perform a diagnostic. The OBD I's use a spare fuse in the fuse box to diagnose the exhaust system.

Is there any way to use a spare fuse in the OBD II models, or is the scan tool the only way, and can someone please tell me more about these scan tools and if I should look into getting one. And, if I were to drop the engine of my 95 into this 96, will I end up with a big headache when doing diagnostics?

Cheers,

Jai

I believe the extra-fuse insertion-method is OBD-I only, so yes, you would need an OBD-II tool to get the codes. I love my ScanGauge, as it has OBD-II code-reading/clearing functions as well as very useful real-time data from the ECU...

I suspect that dropping a '95 into a '96 might not have all the sensors that OBD-II expects, but that's only a guess

Here's a pic of the OBD II connector (in the yellow box):

http://i8.photobucket.com/albums/a3/wayjamus/GeoConnector014Edited.jpg

Here's a couple of links to OBD II forums. The 96 Metro uses the ISO 9141 protocol. You can search through them for info on scan tools. The Metro uses pin 9 for the air bag system which is different than what a lot of the tools use for diagnostics. Just something to keep in mind.

http://www.mp3car.com/vbulletin/engine-management-obd-ii-engine-diagnostics-etc/

Scan tools are cheap too. Here's one but there are others. Just search the above forum. Edited the bad links.

http://www.obdpros.com/

As for the 95 to 96 engine swap, you will run into problems if you need to get it inspected, or at least I think you would. Up here, all 96 and later models require hookup to OBD II scanners for state inspections, so unless you can do as Mike_Van suggests, your car may not be inspectable if you don't have all the sensors.

Hope this helps

Thanks for the info. Can somebody tell me where the crank sensor is located in the 96? I know that the engine components are layed out a little different in the 96 then they were in the 95, and I'm still a little inexperienced in working on the 96. Anybody know if it's possible to swap all the necessary parts off of the 96 engine to put onto the 95 engine to make the 95 engine work in the 96?

Jai

[quote=carpenter_jai]Hi All,

Can somebody tell me if I have this right? 96 is the first year to introduce OBD II to metros. A special scan tool that fits in just under the steering column is the way to perform a diagnostic. The OBD I's use a spare fuse in the fuse box to diagnose the exhaust system.

Is there any way to use a spare fuse in the OBD II models, or is the scan tool the only way, and can someone please tell me more about these scan tools and if I should look into getting one. And, if I were to drop the engine of my 95 into this 96, will I end up with a big headache when doing diagnostics?

Cheers,

Hello, maybe you can help me too, how do you put the cv shaft back into a geo metro 1996 model, ive tried to push mine in, it wont go, as for your question, it is alot of work, but you can switch the engine but the 95 engine will fit, you have to change the oil pump because it has a crank sensor, then change all of the gears too and the timing belt. You also have to switch the coolant sensor, and the oxygen sensor. Its alot of work, but it can be done.

cowboy4u188

Hello, maybe you can help me too, how do you put the cv shaft back into a geo metro 1996 model, ive tried to push mine in, it wont go, as for your question, it is alot of work, but you can switch the engine but the 95 engine will fit, you have to change the oil pump because it has a crank sensor, then change all of the gears too and the timing belt. You also have to switch the coolant sensor, and the oxygen sensor. Its alot of work, but it can be done.

cowboy4u188
http://www.automotiveforums.com/vbulletin/images/statusicon/user_online.gif

Try lubing it up a bit. Push harder. It'll go. I sometimes use a 32oz deadblow softface hammer to persuade them in when they're being fussy.

MechanicMatt

carpenter_jai, to address your question about your OBD II and reading the codes, you don't necessarily have to get a "scan tool", but just a "code reader". One source I've dealt with is etoolcart.com. The code readers are cheaper - $100 to $200.

Thanks for the info. Can somebody tell me where the crank sensor is located in the 96? I know that the engine components are layed out a little different in the 96 then they were in the 95, and I'm still a little inexperienced in working on the 96. Anybody know if it's possible to swap all the necessary parts off of the 96 engine to put onto the 95 engine to make the 95 engine work in the 96?

Jai Hey Jai on the 96 I think the crank sensor is located on the passenger side of your oil pal and in the middle, there should be a wire run to it. As for the QBDII scan tool I bought one off ebay for about $50.00 that I am very happy with. It doesn't just tell you a code it tells what it is and has live steaming data such as coolant temp, timing, RPM, speed, and on and on there is more info than I have the smarts to figure out it's called the V-checker. Just do a seach on ebay there are several sellers selling them just check their feedback for one with positive feedback which I think most of them had. As for the 95 to 96 do a search on team swift I've read where some have done it before.