what the heck is this??

Well just got done with my headgasket & t-chain guides on my 89 300e 3.0l.It went well but I have a prob maybe you can help.There is a pump or something under the intake that has an adjustable linkage on it.when I hook it up it idles way high.It is adjustable & wondering if I should adjust it.Also I have a veauum line that is black & it goes to a check valve then to a sensor in front of the engine which has 2 nipples.Could someone maybe let me know where it goes.IM GOING CRAZY TRYING TO FIGURE IT OUT(short trip)Thanks

give me your VIN. i'll send vacuum diagram.

what pump under the intake? can send diagram/photo?

Thanks sleepwalker that would be a great help.My vin is -WDBEA30DXKA919040.I found out the pump I was asking about was indeed the cruise pump.I adjusted the linkage & good as new.Thanks again.
Frank

your car is not 89 model.

VIN WDB1240301A919040
Plant 50
Model 300 E
Chassis 1240301A919040
Engine 103983 12 144870
Transmission 722358 03 171675
Tyres
Primary CONTINENTAL
Forward 50/8 50/8
Rear 50/8 50/8
Order 0 8 704 11896
Lights BOSCH
Wiper BOSCH
Axle
Forward BE0780W90913780
Cab 29675
Delivery date 21.12.8821.12.88
Dealer United States (USA) (704)
Interior mb-tex grey (178)
Paint
040 black (T) (с 01.01.1963)
Options
222 right front seat, electrically adjustable (с 01.11.1978)
240 outside temperature indicator (с 01.03.1982)
241 left front seat electrically adjustable with memory feature. only applicable to w 210 when installed in conjunction with code 275. (с 01.03.1983)
286 luggage nets on front seat backrests (с 01.01.1962)
412 electric sliding roof with tilting device (с 01.07.1983)
420 automatic transmission, floor shift (с 01.01.1963)
430 headrests in the rear (с 01.01.1977)
446 tempomat (cruise control), steering column, electrically adjustable, and airbag (с 01.02.1980 по 31.10.1993)
461 Unknown code
491 USA version (с 01.01.1963)
506 outside rear view mirror, left and right, heated (electrically adjustable on the right) (l.h.d.) (с 01.10.1983 по 31.03.1989)
outside rear view mirror, right, convex, taxi export version
519 Becker radio Grand Prix electronic cassette - USA (с 01.08.1980 по 30.11.1990)
Becker radio Mexico Grand Prix, electronic (USA)
524 paintcoat preservation (с 01.01.1964)
531 automatic antenna (с 01.01.1963)
543 sun visor with vanity mirror, illuminated, left and right (с 01.11.1978)
551 anti-theft warning system (с 01.11.1978 по 31.03.1998)
570 folding armrest front w202/210 stowage box front with armrest (с 01.04.1970)
front folding armrest w202 - housing at front with armrest
588 automatic climate control and electric window lifters (front and rear doors) (с 01.01.1977)
593 heat-insulating glass, all-around, heated rear window pane (single-sheet safety glass), band filter
green heat-insulating glass all round, heated rear window, single pane safety glass - tinted strip (с 01.01.1972)
600 headlamp wiper/washer (с 01.08.1971)
611 courtesy lamps for front and rear doors, with W124 also for central doors/W202 front doors only (с 01.11.1978)
639 elimination of first-aid box and warning triangle (с 01.08.1977)
640 aluminium disc wheels with radial-ply tires (с 01.10.1969 по 31.12.1989)
809 Change of year of model, last figure shows new model year


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thanks for the info.It solved my vacuum mystery.Would you happen to have any ideas why I get poor flow from my heater/defrost.It seems like it was great when I got the car but not so great now.I replaced the blower motor.I got it used.Thanks again.

quote:

ORIGINAL: franko

Well just got done with my headgasket & t-chain guides on my 89 300e 3.0l.It went well but I have a prob maybe you can help.There is a pump or something under the intake that has an adjustable linkage on it.when I hook it up it idles way high.It is adjustable & wondering if I should adjust it.Also I have a veauum line that is black & it goes to a check valve then to a sensor in front of the engine which has 2 nipples.Could someone maybe let me know where it goes.IM GOING CRAZY TRYING TO FIGURE IT OUT(short trip)Thanks

cruise control auctor??