BMW Service Bulletin Archive

erratic-idle-speed-12-005-82-2055-382

Service-Informatio&n Group: 12 Engine – Electrical March 198 2 Bulletin No.: 12 005 82 (2055) – For U.S.A. and Canada Only – RE: Idle Speed Variations Dear Dealer: It is possible that after some high mileages, models equipped with electronic ignition (starting with all 1981 models), that the idle speed becomes erratic after reaching its normal engine temperatu~e. Normal idle speed is at 950 ยฑ 150 RPMs. If theยทapove problem exists, proceed as follows: โ€ข ..:,::;ยท_ยท.’, -~., .. -.:::.-,_ -~~: (1) Make sure that ignition timing, _idle adjustment ,,_/-~lยท ยท~โ€ข valve cle~~ances are cor,:;,~c:t::,~,,.,.,..,d::~~\ โ€ข \ i}โ€ข~~;:~~~~- โ€ข ., โ€ข ; .,t;, ~-.-~~t~~โ€ขโ€ข}:T-:~~ โ€ข~r ( 2) Sta;~— encj’:Ftieยท~i:It~F~e RPM~, .~3:So:o;~~:’.Q,00R” PMs, ~n”‘i\tf.io-$1::h;โ€ข~~ ,i-~~th.,.i:~( time t9a-&fnor~al. 1.dl’.e 5-.pe.,.ed;.t,g,i ngt-:,d”ec.~l,3/en~ae rtraz:i~1-ss-1on, , , โ€ข…. โ€ขยท ~” .- โ€ข -ยท-ยทยท ‘l,โ€ขI . . ~~~โ€ข <\-- > and .b~\s]’.:J:P:E?.” – e”-}~clu.tch . obtain i ‘ – .ElEt’.d~. ( 3 ) If. -‘~~t:~;:;ttJ:~:/i:~~~\\.t_et::~t~~-~ยท )t~i,;~::~1~::~~t_:.t~,,; . the ยทmechan-ica.”1:–advahce_ n_i eยทchaltism in{the~ยท!e.citr6n1c im~~-1s eยท~~-~.t~’i~~fi\~ei~J\~~~J~qt

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