Ecm-2100

FireFly666 · Post by **FireFly666** » 22 Nov 2021, 10:55

The code WAS intermittent for a few months. Now I can’t get it to come back.

Post by **erikv11** » 22 Nov 2021, 11:17

That's good news!

FireFly666 · Post by **FireFly666** » 22 Nov 2021, 14:29

Nope the code ecm-2100 came back today. But it did not set the check engine light or and cutting of power. Guess I’ll be replacing that sensor.

Post by **abscate** » 22 Nov 2021, 15:35

Mine did that exact same thing - it would pend and sometimes never set.

The final tell-tale was a loss of power for a few seconds, car would coast down for a few, then catch and run just fine, no codes set.

Thats the indicator fuel delivery was not working correctly

Post by **erikv11** » 22 Nov 2021, 23:00

Swap it in and be done!

FireFly666 · Post by **FireFly666** » 23 Nov 2021, 00:09

I will report back after I get the time to do the job and some testing.

FireFly666 · Post by **FireFly666** » 23 Nov 2021, 15:24

Ok replaced the part and got an ecm-1200???? It’s in the 30s out…..
I cleared it and it didn’t come back so hopefully I’m good now.

One thing I will say is there is a definite fuel issue. On my way home I checked the fuel pressure a few times and at one point I was idling sitting in traffic and it was in the 700s and stayed there for no reason.

Post by **RickHaleParker** » 23 Nov 2021, 20:16

FireFly666 wrote: ↑23 Nov 2021, 15:24 Ok replaced the part and got an ecm-1200???? It’s in the 30s out…..

ECM-1200 Intake Air Temperature (IAT) Sensor.
Substitute value
Temperature is assumed to be +20 °C ( 68 ℉ ).
Three-way catalytic converter (TWC) preheating and idle air trim diagnostics are disabled.

Air Temperature is used to calculate Air/Fuel ratio.
30s ℉ air has more Oxygen then 68 ℉ air. Pair 30s ℉ air with a fuel charge for 68 ℉ air and the mixture would be lean.

If this was my car I would be pulling and cleaning connectors on all the engine bay sensors.

FireFly666 · Post by **FireFly666** » 23 Nov 2021, 22:09

Maybe I a little dielectric grease could help?

Post by **RickHaleParker** » 23 Nov 2021, 22:17

FireFly666 wrote: ↑23 Nov 2021, 22:09 Maybe I a little dielectric grease could help?

Dielectric grease is a preventive aid, it will not fix anything.

Dielectric grease protects electrical connections against corrosion. Dielectric grease does not conduct electricity. It shouldn't be applied directly to the mating surfaces of an electrical connection. Dielectric grease is equivalent to putting Petroleum Jelly on the battery terminals to keep them from corroding or the paint job on the body. Repainting over rust will not fix the rust.

In short Dielectric grease is a sealant.

Ecm-2100

Re: Ecm-2100