Welcome Guest. Please Login or Register.

Audi 80 TDi electrical wizard required

« Prev
1
Next »

orangeporridge Part of things Posts: 40	Audi 80 TDi electrical wizard required orangeporridge @orangeporridge
	Jul 12, 2012 18:29:56 GMT Select Post Deselect Post Link to Post Back to Top
	Hi All! Quick history, Took a chance on a cheap '94 TDI Avant advertised on here requiring fuel pump. (Indeed it did need a new one) Fuel pump replaced.... not the source of woes, it now seems there's nothing mechanically wrong with the car however it wont start. So after much digging into the history of early Audi diagnostics code extraction I managed to glean the following codes and their respective components from various VAG related internet sources.... 2234 - ECM supply voltage 2323 - VAF, Volume Air Flow Sensor Two more codes; 2311 and 2133 I couldnt find the meaning of. Also, 2213... Couldnt find this code either but I think it relates to the crank/speed sensor. Having done some research into these it looks to me like either the ECU or a relay relating to the ECU is the culprit but that's where I come unstuck! There's a lot of references to relay 30 or 109, but cant find these on my car so guessing they are engine specific... Any help would be greatly appreciated, especially if you've seen this sort of thing before! Many thanks in advance! Update, here she is looking all pretty....but currently immobile
	Last Edit: Jul 12, 2012 18:39:27 GMT by orangeporridge

	Reply Quote

cobblers Posted a lot Posts: 3,921	Audi 80 TDi electrical wizard required cobblers @cobblers
	Jul 12, 2012 21:09:43 GMT Select Post Deselect Post Link to Post Back to Top
	I'm about 80% sure these cars use the VAG CE2 fuse box (like a mk2 mk3 golf, passat, t4 van etc etc etc) If so, What's the label on relay #3 in your fuse box (counting from top left) Whatever that is, it should be your ECU relay. Usually these are #30, but it could be 32, 109 or a number of others. It should be clicking when you turn the ignition on and off. If not, whip it open (you can usually pop the casing off with a fine flathead screwdriver in the clips) and inspect the board for dodgy solder joints and any obvious knackeredness.


	Reply Quote

craig1010cc Club Retro Rides Member Posts: 2,993 Club RR Member Number: 35	Audi 80 TDi electrical wizard required craig1010cc @craig1010cc Club Retro Rides Member 35
	Jul 12, 2012 22:19:40 GMT Select Post Deselect Post Link to Post Back to Top
	My B4 passat (which had the same IZ TDi engine in it) developed a starting issue, I was pointed to the 109 relay. £14 from VW and it started up fine and gave no more issues It is a common failure on these VAG TDi's Relay 30 is what I have changed on my petrol Audi 80, it is related to the Digifant system I think, and shouldn't be on a TDi
	Last Edit: Jul 12, 2012 22:20:43 GMT by craig1010cc

	Reply Quote

orangeporridge Part of things Posts: 40	Audi 80 TDi electrical wizard required orangeporridge @orangeporridge
	Jul 13, 2012 21:24:21 GMT Select Post Deselect Post Link to Post Back to Top
	Thank you for the swift replies folks, I'll have a poke around tomorrow and get back to you with what I find.


	Reply Quote

orangeporridge Part of things Posts: 40	Audi 80 TDi electrical wizard required orangeporridge @orangeporridge
	Jul 14, 2012 18:47:13 GMT Select Post Deselect Post Link to Post Back to Top
	These are my findings Righty, had a look inside pretty much all the relays for dry joints or burn marks, except the ones that were just coils on the diagram. Nothing appears amiss! The fusebox, although it probably doesn't help that I didn't take a photo of the lid. What this doesn't show is the top left hand slot, where two pins are bridged in a relay socket... Did manage to get it started in the end though with some easystart and injection pump adjustment, however there's no response from the throttle pedal and the revs just climb, guessing with nothing telling it what to do electronically this is expected. Will keep at it anyway, looking into m-tdi conversions as a way out too!"


	Reply Quote

craig1010cc Club Retro Rides Member Posts: 2,993 Club RR Member Number: 35	Audi 80 TDi electrical wizard required craig1010cc @craig1010cc Club Retro Rides Member 35
	Jul 15, 2012 17:37:19 GMT Select Post Deselect Post Link to Post Back to Top
	On my passat (and on my Audi 80) there are relays under the dash, and that is were the relay 109 was on the passat TDi and the relay 30 on the Audi petrol.


	Reply Quote

bortaf Posted a lot Posts: 4,549	Audi 80 TDi electrical wizard required bortaf @bortaf
	Jul 15, 2012 20:43:57 GMT Select Post Deselect Post Link to Post Back to Top
	Bridged relay contacts can be cos you don't have intermitant rear wiper option or int light delay ect, some motors are easy to upgrade by adding relays instead of bridges
	R.I.P photobucket

	Reply Quote

orangeporridge Part of things Posts: 40	Audi 80 TDi electrical wizard required orangeporridge @orangeporridge
	Jul 17, 2012 15:42:17 GMT Select Post Deselect Post Link to Post Back to Top
	Had a look inside the relays under the dash too, all good from what I can tell. The Relay-bridge thing is an interesting piece of info though, cheers!


	Reply Quote

orangeporridge Part of things Posts: 40	Audi 80 TDi electrical wizard required orangeporridge @orangeporridge
	Jul 18, 2012 21:23:48 GMT Select Post Deselect Post Link to Post Back to Top
	OK, It seems that my old man has a spare 300tdi injector pump, (Being the rural types we have landrovers in various stages of decomosition around the place.) This seems to be a successful conversion that has been done and documented by this guy... switchamotor.blogspot.se/search/label/pickup%20TDI So that's the plan for the weekend! Thanks for your help...


	Reply Quote

Retro Rides Privacy Statement