Technical 1.1 SPI Air Sensor

[geom]

Hi all,
i recently fitted and induction kit (Green P-263) in my 1.1ie engine and everything was fine. The engine revs, especially with 1st gear, were rising tooo fast at 5500 rpms, faster than with the old air box.

After some days i noticed a lack of power in high revs (above 4200 rpms), the engine seems to have good low torque but after 4200 rpms it isn't as it was before although i use 100 octane fuel.

Some facts.

-The weather conditions were different between the induction kit installation and now. The temperature was about 5-10 degrees Celsius lower than now.

-I haven't yet put the pipe to feed the filter with cold air from the front of the car.

-ECU was not reset (i don't know if i should reset it to read the new parameters)

So, if none of the above facts makes the difference, i wonder if the new induction kit has destroyed the air sensor near the SPI head and how i can determine if the air sensor works fine ?

Thanks

George

 

[Luke]

personally i think its just down to the rising temperatures and lack of cold air feed Get them sorted first before worrying about air flow sensors

 

[geom]

Ok, but is there any way i can test the air sensor condition ?

 

[Luke]

Ok, but is there any way i can test the air sensor condition ?

there is im sure, but im the wrong man to ask Ive got no fuel injection to worry about

But testing with a multimeter may work? Also if it was airflow sensor, you would have much more problems that just a little less power at high revs IIRC. It would idle like a pig too, and probably sound like a tractor.

 

[Neo-The Matrix]

Air sensor should give somewhere between 0-4.7v. But as Luke said get the cold air feed first cause you are having the same problem I had on my punto before getting a decent feed.

 

[geom]

Ok, cold air feed finally fitted with a little plastic flexible grill at the filter side of the tube. I put some pictures in "Green Air Filter oppinions" thread, https://www.fiatforum.com/showthread.php?p=389199#post389199.

The only problem is that the tube gets very hot. I hope it won't burn

Maybe a metal tube is better that the PVC tube ?
Will it get cool faster than the PVC ?

 

[Neo-The Matrix]

As I told you in pm the pvc versus metal will not do a big difference cause it is not a closed system like BMC CDA.

But your pvc tubing heating up it a problem, the ones I showed you in the pm (the k&n installation instructions) are pvc but are heat resistant.

 

[geom]

Ok, thanks

 

[Morty Mort]

I really don´t think the air heats up very much. Last year I had the tube around the timing belt area to the filter. Now it´s straight over the engine. No particular difference, it actually feels better. The air comes in such speed it won´t get hot. And in low speed the "induction" doesn´t work anyway, since the air is mph-driven...

Morten.