I have a man 91 E36 320i, havent done any mods to engine yet and dosent look like i will for a while untill i get all the problens i have with it sorted. Its been running like a dream for the past year and a half I've had it , but as of the past 3 weeks i had nothing but trouble!
heres whats wrong and help would be so greatly appricated:
* my instrament cluster has stoped working i dont have revs, speed, fuel or temp. batt oil and e break lights still work though!cant get error codes out of the on bord diagnostic as i either cant get the stupid method of geting the to come up to work or the engine check light isnt working so that stuffs me a lil. (however I have checked all fuses none of which are blowen and have removed cluster and checked all plugs and rear panel all of which are fitted fine even though tis was the case i removed the rear panel this revieled a resister has blowen , dont know if this could cause all 4 guages to stop working or not)
* engine has started to run rough as if only running on 4 cylinders ( and as you should all know the 320 is a 6 ) and even worse sounds kinda like a sick boxer! it dose this the magority of time its running but will have patches when its running fine , idle is rock solid at 800 rpm though(i have checked coil packs all of which are fine , only 1 fouled plug which was no 1 cyl,have replaced air panel filter with new pod filter and have checked fuel filter for blocks and put some injector cleaner all to no avail, rubed down relay spade to with abrasive paper to remove oxide , an have had a small backfire through intake, before the engine started playing up it had a slight over heat due to silcon form the water pump housing making its way to the radiator ,have removed thermostat to check after overheat car ran fine for a week after which so dont think its head or head gasket but may be wrong will do compression test soon to see, thermostat is the only thing ive touched on engine)
Would be really interested to see if any one out ther has had the same sort of issues , i have a sneeky suspission that it may be my ecu and or air flow meter, i jst dont have the money to go throughing at replacement parts on a hunch or to get a diagnostic done, sucks to be poor!