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1989 190e 2.6
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16 Posts
Discussion Starter #1
I am troubleshooting the non-starting-4-year-sitting in the mechanic's yard 1989 190E 2.6.

I found the non-working fuel pump, rusted fuel tank and bad spark plugs. All rubber vacuum/fuel hoses were replaced, fuel tank treated, throttle body and ICV cleaned, temp sensors checked (4-post sensor is within specs at 1100 Ohm), new battery, OVP/FPR replaced with new, new Bosch distributor cap, rotor and spark plug wires, oil was changed.

After a few cranks the car started and ran with a solid 750 rpm idle. After detecting the fuel leak and fixing it, the car refuses to start. The engine was barely warm (ran 5 minutes). Pushing on the fuel distributor plate while cranking doesn't help. I replaced the ICV with another junk yard unit - same results. The CSV clicks and there is fuel at the FPR and CSV lines.

There is no spark. The coil was checked and within specs: 0.6 Ohm between terminals 1 and 15, and 10 kOhm between 1 and 4.

I am following the FSM troubleshooting guide, page 15.11. II-540/5 mentions that the position pickup resistance has to be 200 Ohm. Mine is 800 Ohm.

I went to the local junk yard, and found 6 190e/300CE models with the I6 engines, all the crankshaft position senses (by the starter) measured between 800 and 1100 Ohm. Is the FSM wrong? I find it hard to believe that all pickups were broken on these vehicles.

Question 1:
Can someone please with a good running I6 190e check his/her crankshaft position pickup's resistance and let me know? If it is 200 Ohm indeed, I am going to buy a new one from Autohaus. I'd hate throwing parts at it without solid confirmation.

Question 2:
I found another Ignition Control Module, part number 008 545 74 32 (1989 300CE) at the JY. Mine is 008 545 63 32. Visually the only difference is the location of the crankshaft position pickup wire. Are these interchangeable?

Thanks in advance!
Den
 

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Registered
1989 190e 2.6
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16 Posts
Discussion Starter #2
I guess I found the answer to question 1. I misinterpreted the FSM. The digit '1' was so much spaced away, I assumed it was 200 Ohm, when in reality it is 680 - 1 200 Ohm (1,200).
 

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