Random CEL when I hit large bumps - SOLVED!

[ForcedFirebird]

Have a car in the shop right now with the same issue. Went to start it to pull in shop, no dice. Open the c191 to see the male pins are black and female are green with white fuzzies on it.

Since you have the tool, start by pulling the pins and seeing if they can be cleaned.

On the phone atm, can look up those pin numbers when on a pc. Just wanted to share to let you know, you aren't alone lol.

EDIT: And now the fuel line just burst under the tank. :/ Never ends....

[2mAn]

Random CEL when I hit large bumps

Pretty sure I suggested that in a recent PM.

The c191 uses the same pins as c101. If you get a pin release tool, you can easily re-pin the connector provided the plastic case is on ok shape. Most of the time I see them with some sort of aftermarket connector. This connector have been a problem spot for s few years now. :/

Yea I think you did too...

I tried to drive it back into the garage last night when I was sort of motivated to work on it and it won’t even start now... lol

I have a tool to de-pin that connector and also a fancy crimper I bought when I was doing my 24v swap but I don’t have any new pins and I don’t know if there’s any place locally that can get them to me quickly. Looks like work will be an interesting day if no doing any actual work :rofl:

Im guessing I’ll need both sides to do it right, which ones am I looking for?

61-13-1-376-191
61-13-1-376-193
61-13-1-376-195

[ForcedFirebird]

Pretty sure I suggested that in a recent PM.

The c191 uses the same pins as c101. If you get a pin release tool, you can easily re-pin the connector provided the plastic case is on ok shape. Most of the time I see them with some sort of aftermarket connector. This connector have been a problem spot for s few years now. :/

[2mAn]

If the X20 connector was /is corroded only cleaning that pins may not be enough
The corrosion can extend into both of the harnesses causing poor connections pull back the rubber boots and have a look
You may need to replace some wire and repin

This is a clue.

I hope this helps. C191

Definitely does. Its about what I expected. And what a surprise that the one thats giving me issues is the one right smack dab in the middle.

Whats the ideal fix here? I dont want to eliminate the connector

[IceWhite]

So we cleaned up the harness and it was pretty dirty but it didn’t make any change. So while it was running I pulled each spark plug wiring to see if there was any change and 2,4,6 showed no change...

Ideas?

This is a clue.

I hope this helps. C191

[36brua]

If the X20 connector was /is corroded only cleaning that pins may not be enough
The corrosion can extend into both of the harnesses causing poor connections pull back the rubber boots and have a look
You may need to replace some wire and repin

[2mAn]

So we cleaned up the harness and it was pretty dirty but it didn’t make any change. So while it was running I pulled each spark plug wiring to see if there was any change and 2,4,6 showed no change...

Ideas?

[vtechnik]

let me know if you need any pigtails or injector wiring from my eta

[2mAn]

Random CEL when I hit large bumps

Well... now the CEL is always on. I figured ok let me spend my Saturday night changing the CPS.

Old ones looked bad




New one from ECS tuning arrived quick


Figured this would be quick and easy... but I always get nervous with these feelings because....

It didn’t change anything.

It sounds like it’s running on 5 cylinders though. Ian suggested a stomp test so I’m about to go do that.

Stomp test
1-2-5-1

I guess it’s back to the injector harness again

[MrBurgundy]

Look at your tach when it happens and see if you notice anything obvious.

[2mAn]

Ok thanks, I will check out the harness and look into the CPS

[MrBurgundy]

I’m running a vemo.

It’s been almost two years and I haven’t had a problem.

My catalogues only list that one, so I didn’t have any other options


Sent from my iPhone using Tapatalk

[2mAn]

I think I should just buy a new CPS, but I dont know which one to get. Is this one of those "Buy OEM or you'll regret it" situations? If not, whats a good one thats worth it.


Pelican says BMW is NLA
https://www.pelicanparts.com/catalog...pg3.htm#item12

Bluntech only has VEMO (?)

https://www.blunttech.com/products/7846038

[MrBurgundy]

I was dealing with a similar problem, but my car would buck really badly when the CEL came one.

It ended up being the CPS. The routing for the wiring was incorrect, so when I would hit a bump, the engine would yank on the wiring and cause it to lose connection.

Hopefully you'll find it quickly, because these kinds of problems are usually a PITA

[2mAn]

Does the car buck or hesitate in any way when this happens?

for just the split second that its shaking from the bump

edit: Now that I think about it, my CPS also was bad and he put a good, used one in