New Dilemma

[TurboGirl]

My 90 Laser RS, details posted under "running rough"

Finally got it datalogged and here is what came up...

* Air Flow Sensor
* Air Temp. Sensor
* Barametric Temp. Sensor
* Injector Circuit??

I was told by the kid who datalogged it that the first three are all a part of the MAS, he wasn't sure about the Injector Circuit.
We've changed the MAS 3 times with different ones, can't seem to figure out the problem.

Anyone have any ideas???

[JET]

Sounds like some bad wiring possibly or the ECU may be bad. The caps in the ECU tend to leak and cause all kinds of damage. The first 3 are all in the MAS. Clean the connections and check the continuity between the end of the MAS plug and the ECU plug to make sure a wire isn't broken.

[acidrumz]

ohkay, the first 3 is located in the maf sensor. check/replace with a known working one.

the injector circuit is the wire that plugs into your injectors. should be 4 for them to each injectors. check for loose/broken/cracked wires.

you can check your ecu too. replace with a known working one to see if the cel clears your first 3 cel.

goodluck.
later.



edit, i meant there are 4 plugs to each injector.

[john]

There are only 2 wires per injector.

[TurboGirl]

Alright...
We've checked the MAS and the Injector Circuit and all seems good. I am really confused because we can't seem to figure it out. I'm trying to get a hold of a logger again but not have much luck with that either. Any suggestions of where I can look to figure it out, or someone I can talk to.
Thanks

[LightningGSX]

Originally posted by JET@Jan 7 2004, 10:38 PM
Sounds like some bad wiring possibly or the ECU may be bad.* The caps in the ECU tend to leak and cause all kinds of damage.* The first 3 are all in the MAS.* Clean the connections and check the continuity between the end of the MAS plug and the ECU plug to make sure a wire isn't broken.
I'll second this.Check the grounds also, specifically the MAS ground.Bad grounds can cause all sorts of weird problems.