Messages

1

Engine management / Re: m42-idle problems

« on: November 20, 2015, 05:13:48 AM »

i will try this week-end to change o2 sensor.any other idea? the problems start after 10-15 minutes after i start the engine, when starts to warm up.when is cold its fine. also i noticed that when i start the engine, runs 3-4 turns before starting. any ideas?

2

Engine management / m42-idle problems

« on: November 19, 2015, 03:09:45 PM »

i just finished to swap an e36 m42 in my e30 and i started to have some problem. when is warm, the engine is stalling and have an erratic idle. i noticed that this happens commonly when i have light on, music on, blower on or any kind of electric consumer. if i close light for example, its ok for some moments and after that starts again until he dies. i just changed the battery with a new one bigger, new vacuum hose, new gasket for intake manifold, new sparkplugs, new oil and filter but the problem is not solved. before swap, the engine doesn't have this problem, or i didn't noticed. any ideas? see below video with my car

https://youtu.be/-Weyjf8kOrU

3

Swaps, Turbos, Buildups / Re: e36 m42b18 swap in e30 m10b18

« on: October 04, 2015, 02:45:59 PM »

Yes, i have 2 sensors.first near the oil filter is blue.the other one i dont know what color is.is not compatible the e36 sensor with e30 gauge?what sensor can i use? From M40/M42/M10? E 30 series?

4

Swaps, Turbos, Buildups / Re: e36 m42b18 swap in e30 m10b18

« on: October 01, 2015, 02:34:04 PM »

all the sensors are installed, i don't remove anything from the engine. is like was in the e36. yes, i have also  the sensor from m10 but is bigger in diameter and length then the one from m42. the e36 temp sensor is not compatible with e30 gauge?

only thing that is not connected is a cable from somewhere underneath of intake manifold with a connector with 2 pins but i don't know where to connect it because i don't have any free connector and my engine works fine without this cable connected.

5

Swaps, Turbos, Buildups / Re: e36 m42b18 swap in e30 m10b18

« on: September 30, 2015, 02:49:55 PM »

i just finished to change my m10 engine with m42 and i have a problem, the temp gauge is not working. the needle doesn't move. before swap everything was ok with my temp gauge also in the donor car. i used e36 wiring loom, everything is verified to be connected, also the wiring in the x20 connector. how can i get my gauge work again?

6

Swaps, Turbos, Buildups / Re: e36 m42b18 swap in e30 m10b18

« on: September 20, 2015, 01:12:25 PM »

In the link from you, motronic have round conector and jetronic is rectangle conector. My car have jetronic injection with round cinnector. This is the problem. I have the same pinout as motronic?

For e36 i dont know exactly the year of the engine because the car is from 1992 but the engine have ews and the ews have some strange improvisation already made. And i believe that is not the original engine and was changed.

7

Swaps, Turbos, Buildups / Re: e36 m42b18 swap in e30 m10b18

« on: September 20, 2015, 07:56:06 AM »

On e30 zone i find only for motronic, i have jetronic injection.for jetronic i find only rectangular connector, not round. And fir e36 i have found many diagrams but are not the same.so wich is correct? Before ask i have searched.i am not lazy.but i didn't find something good. So if you can, please send me your diagram to compare with my connector.

8

Swaps, Turbos, Buildups / Re: e36 m42b18 swap in e30 m10b18

« on: September 19, 2015, 07:05:18 AM »

can anybody help me with the diagram for this 2 connectors? i think are the c101 connectors. first is from my car, bmw e30 m10b18 l-jetronic injection engine from 1988 and second is from an 1992 bmw e36 m42b18 engine bought for my car. i cant find it the diagrams in bentley and haynes manuals and for e30 i cant find this type of connector, only the rectangular one.

9

Swaps, Turbos, Buildups / Re: e36 m42b18 swap in e30 m10b18

« on: September 04, 2015, 09:38:05 AM »

thank you Darky!

regarding wiring this engine, can somebody help me with a wiring diagram to connect e36 engine harness to my m10 e30?

10

Swaps, Turbos, Buildups / Re: e36 m42b18 swap in e30 m10b18

« on: September 03, 2015, 08:45:19 AM »

hi, i give up with the engine with idle problems and i found another engine, also from e36. can i use engine mounts and brackets, radiator, exhaust system and first part of prop-shaft  from e36 to be bolt-on on my e30?

11

Swaps, Turbos, Buildups / e36 m42b18 swap in e30 m10b18

« on: August 20, 2015, 05:21:45 AM »

hello, i have a 1988 e30 with m10 b18 L-jetronic injection, manual transmission  and i am planing to change the engine with a e36 m42b18 engine. can someone help me with a list of all things that i need it to put the m42 in my e30? from what i read about this swap this is my shopping list:

- m42b18 e36 engine
- transmission, wiring harness, ecu and EWS ( from what engine/car?);
- upper and lower oil pan ( from what engine/car?);
- engine and transmission mounts and brackets ( from what engine/car?);
- inlet manifold ( why i can't use the e36 inlet manifold ?);
- radiator ( from what engine/car?);
- Prop-shaft- can i use the one from m10 or i have to buy another? (from what car?)
- exhaust system- can i use the one from m10?

do i need something else?

i found to buy a m42b18 from e36 mounted on e30, with m40 transmission but have a problem with idle speed ( sometimes is too low, sometimes oscillating). i don't know what to do, the problem with idle speed is scaring me (can be a major problem?). what difference is between m40 and m42 transmission regarding ratio? can i use the m10 prop-shaft with that configuration?