barf

I can only seem to find diagrams for 320i 325e and 318i which is the most similar to my (<1985 ie, very pre-face-lift) 323i? the 320i or 325e? none of these diagrams i found seem to be correct - mine has no O2 sensor but all the diagrams include one. if anyone has a link to or electronic copy of the manual or diagrams you would be helping me get this megasquirt working!!

you're mad if you're trying to use a stock ECU with a cam

thanks for all the replies tyre is 195/65/r14 the speedo is about 10kph fast at 50kph and 110-115 faster at 100kph actual 10kph faster sounds about right! i'll get a tape measure out while i'm asking the head makes an awful tapping noise, what is this usually or likely to be?

want to buy a bonnet to fit my e30 1985 323i bro hit a deer in fairlie at 90+ kph, flipped clean over the car but made a mess of the front :-\

does it (your old one) cause the car to stop intermittently and have a dent in the top of it?

sorry for not including more detail, it's 100% unmodified apart from me replacing ignition coil, leads, spark plugs, fuel pump and fixing the fuel injection computer, electric windows and miscellaneous. as far as I know the instrument cluster is original. - year is 1985 - wheel rim is 14" it has 'e35' marked on it. does that identify the wheel as being from a newer car?

just wondering what size tyre I should be using on 323i e30 5-speed? the speedometer is incredibly inaccurate, indicating about 10-20kms faster than actual speed. I'm using the factory mag-alloy rims with 65profile rear 60 front thanks

thanks guys but i fixed it, resoldered some poor joins on parts of the PCB and shes right now.

fuel injection computer is playing silly buggers. scoped the inj banks and they stop firing randomly. had to drill out rivets to get inside the thing, pressing gently on PCB will make it misfire (no inj pulse), the foam inside the case has bent the PCB i think thats the problem, but dry solder joints dont help I hope not all BMW's computer are this bad. anyone had to fix one of these before? mostly discrete components just hoping someone had been here before, or should i just throw it away? I could put my Megasquirt II on it. anyone installed a MS on an old BMW here? was there much trickiness involved?

we sussed the problem out un-tinned copper contacts on the ECU loom's connector! even toyota and honda tinned their copper contacts in the 80's

the 3 earth straps are on sump, altenator and rocker cover. (it' the L-jetronic system with external/inline fuel pump FYI.) this is bad ! HV circuit has lower voltage potential to other earth circuit than spark plug earth. no wonder the coil, rotor and cap were annihilated. I've added earth straps to dizzy and exhaust manifold near spark plugs.

argh theres more to this problem than a busted dizzy cap and rotor, symptoms are the same with new diz cap and rotor. took it for a drive after dark and opened the hood and look! all the spark leads are arcing across to one another, is so bad there is pre-ignition in another cylinder from the spark jumping to another lead! (i put honda ignition coil on it, they have a big spark) I guess it has done over 200,000kms on original leads so, insulation could be bad. Get new spark leads tomorrow, hope this will fix it!

wow, thanks for the prompt replies ! it was indeed the dizzy rotor and the cap is in poor shape also. of course I diddn't look at that until after I pulled the scope out and observed the dwell and coil charge, lesson I learnt: simple things first!

Hello everyone, my first post here on bimmersport. My bro got a 5-speed E30 323, which is the first BMW we've bought and so far things are not going well with it. Being no stranger to car repair and auto electronics, I suspect his Telefunken transistor ignition module is giving up the ghost. Symptoms are good running when cold, but lack of power at high rpm/load and intermittent inability to charge and fire the coil (it dies alot, but runs sweet when first started for a few minutes). Fuel system is fine, sensors are all OK but I still havn't scoped the CAS and coil only had a timing light on it. Theres no spark captain! My question is, how generic are these transistor ignition modules? I'd like to replace it without buying genuine BMW part. Are there any 3rd-party replacement part?