thevork;1687435 said:
This is good advice. When the light comes on a code gets set. If that code is 31 the airflow signal is still faulty. What's so hard to understand about that?
Blinking CEL
- Thread starter proto_mkiii
- Start date
This is good advice. When the light comes on a code gets set. If that code is 31 the airflow signal is still faulty. What's so hard to understand about that?
Ok so why would there be no honey comb? Mine is not there i think. also would the oil have killed my afm?
Usually because people remove it. However not having the laminar flow screen is better than having a severely damaged one. Point is for the AFM's karman pillar to generate the cleanest street possible the airflow striking it must be laminar. Look here:
http://en.wikipedia.org/wiki/Kármán_vortex_street
It's why this engine will often idle funky when poorly thought out things are done to the air box or filter. Don't expect a perfect idle without a filter or one that sits too close to the screen. Have at least one diameter upstream of the AFM so the flow can straighten. More if the screen is missing or the inlet is near the cooling fan. Especially if near the fan. I mean jeez, this is basic fluid dynamics.
Oil? Anything that obscures the surfaces of the emitter, mirror, or detector can result in bad signal. Anything that changes the mirror's mass can result in bad signal. Anything that results in a turbulent street can result in bad signal even if the electronics are good because, after all, the sensor is simply mirroring the pressure pulses of the street.
I was talking about the OP's problem though. He should stop screwing around and focus on what the diag system is telling him...
http://en.wikipedia.org/wiki/Kármán_vortex_street
It's why this engine will often idle funky when poorly thought out things are done to the air box or filter. Don't expect a perfect idle without a filter or one that sits too close to the screen. Have at least one diameter upstream of the AFM so the flow can straighten. More if the screen is missing or the inlet is near the cooling fan. Especially if near the fan. I mean jeez, this is basic fluid dynamics.
Oil? Anything that obscures the surfaces of the emitter, mirror, or detector can result in bad signal. Anything that changes the mirror's mass can result in bad signal. Anything that results in a turbulent street can result in bad signal even if the electronics are good because, after all, the sensor is simply mirroring the pressure pulses of the street.
I was talking about the OP's problem though. He should stop screwing around and focus on what the diag system is telling him...
Alright I changed the spark plugs and cleaned the iscv and the CEL went away also no codes but now I can hold an idle and no boost. As soon as my boost gauge hits 0 it jerks. What now?
it has to be the afm. my buddy took out the screen and got oil on his and it killed it. (dsm) it had same problems took me a week to figure out what was wrong.
Yea I'm not in denial about my AFM as I orignally stated that I believe it is my AFM. I'm just stating the fact that the code is no longer there. I guess I have to go see where this leak is coming from or whatever is causing the no boost condition.
I can't find any leaks. Bought another AFM from a member on and tried to install it yesterday. After resetting the ecu it runs even worse. Not only can I not boost, if I try to accelerate too fast it hiccups. Also can't get past 2k. Still no codes though.
All that means is you had multiple problems. You solved the AFM issue but now the other problem(s) has become apparent. You still seem stuck on the "swap stuff out" approach to troubleshooting though. Hardly the best way to do things.
Make and follow a test plan. Isolate the cause of the problem. Replace parts only if they can be diagnosed as bad.
The only parts that have been replaced are my spark plugs and the afm. And my test plan was the tsrm. As that didn't really get me anywhere I turn to you guys for suggestions. Although they haven't been able to get to the bottom of it I appreciate a lot more than the ones whose only suggestion is that I'm wrong and font know what I'm doing. I would like help and want to be able to help someone I'm the future with this thread, rather than have it die like so many others I've seen on here that get killed by ppl who seem to know it all but offer no solutions.