Hey so, I've got the early style tranny with crank sense in bell housing. Im pretty sure I have the CPS and speed sensors plugged in to the correct plugs, but if those were swapped ,would it run at al
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325es noob build
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Temp sensor #1 is reading ~1.5k ohms at the sensor. Which appears to be within the 3k ohm spec of being "cold" bout 80 degrees here. Having trouble finding pinout for 325e monotronic. My fuel map chip is replaceable and the model number puts it as a 1.1. but I do t have the 45 pin im seeing online
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Originally posted by BFT_Boyle View PostOn a somewhat unrelated note, I checked my board and found that I do not have the replaceable chip in my ecu :( I am pretty skilled at soldering though. It does not seem impossible to unsolder and install a chip socket....'91 318i (Alpine) - daily
'88 325ix (Zinno) - drive here and there!
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Originally posted by BFT_Boyle View PostIt's an 86. I did remove the top board and all of the chips were soldered including what I am sure is the one for fuel mapping.
I closed it back up but here is the number
'91 318i (Alpine) - daily
'88 325ix (Zinno) - drive here and there!
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Originally posted by fresh_TD View PostUnscrew the rear cover, peel back the board, youll see the chip there. . I just did this last week to install a MarkD chip
Hey does your 86 have the brake cooling ducts still? Mine does, but I read on strictlyeta that they ditched the ducts after 85 🤔 .
I went and checked my door label while typing this and the car came out of the factory Oct 85' . Which does make it an 86 as far as the DMV paperwork is concerned
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Originally posted by BFT_Boyle View PostI'll double check in a bit. Going to test temp sensor at the ECU plug now.
Hey does your 86 have the brake cooling ducts still? Mine does, but I read on strictlyeta that they ditched the ducts after 85 🤔 .
I went and checked my door label while typing this and the car came out of the factory Oct 85' . Which does make it an 86 as far as the DMV paperwork is concerned'91 318i (Alpine) - daily
'88 325ix (Zinno) - drive here and there!
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Originally posted by fresh_TD View PostThat's just the production date.. my cars production date is 09/85 ..but it's an '86
I keep reading that the blue sensor is my #1 but this sensor here is the only one on the housing with a single pin just like my ecu pinout shows
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Ah-ha!!! Here is why this is a noob build... I didn't realize that my main ECU grounds were on that OBD1 (I think that is what this plug is) mount. These were just randomly touching my engine block.
I was getting suspicious when none of my main ground pins on the ECU plug showed conductivity with my ground strap. I attached them to my temporary grounding point and bam! All ground pins show conductivity and my temp sense pin now is reading something. 2kohm or so. [emoji38]
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The coolant temp sensor for the dme is the first one in line ,closest to the fuel injectors ,the original one for the 2.7 ETA engines was white plastic not blue and more importantly is two pin ,not one ,the single pin brown sensor is for your fuel gauge.The 86-87ES still used the wide brake cooling ducts.You should have a ground cable attached from the chassis to your oil pan ,the one you show in your picture looks like that one .
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Originally posted by 1843lamp View PostThe coolant temp sensor for the dme is the first one in line ,closest to the fuel injectors ,the original one for the 2.7 ETA engines was white plastic not blue and more importantly is two pin ,not one ,the single pin brown sensor is for your fuel gauge.The 86-87ES still used the wide brake cooling ducts.
Now, I don't want to sound too optimistic here. But I have a feeling that with my ECU properly grounded, she is going to fire right up. First crank [emoji41]
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