WEird BPT problem

[bcowie]

I have a 94 323 BPT swap I have a gtx setup.

Sometimes while driving my AFR will suddenly goto 17+ for about a second, this happens at idle as well, you can sorta tell while driving as it hesitates for a sedond. It seems very random and doesn't appear to happen under WOT.

[Lex]

Is it misfiring? It can be ignition related.

[bcowie]

How can I tell?

[bcowie]

Changed IG coil and Igniter with a new one I had around, same issue, any suggestions

[jay]

Check to make sure both your TPS and AFM are behaving.

[bcowie]

I tried 2 vafs maybe the tps.

[bcowie]

Ok Im having this problem.
Sometimes Ill be at idle and the car will drop to like 300 rpm and come back up.

Ill be driving along it suddently goes lean 17+ for a second, however sometimes it doesn't come back and the car dies and I have to wait a minute and once I restart it I'm on my way again.

I changed the IG coil, igniter. TPS is fine I just set it proper on the weekend,

[yunvmyegt]

fuel pump starting to crap out?

[cis2711]

fuel pump starting to crap out?

My thoughts too. What shape are all your vaccum lines in? As a general practice it is good to replace all vaccum lines every so often to eliminate them as the culprit. I have a fuel pump if you want it. Just pay me shipping. Its is a new unit I used for about 8 months-just took it out to install my walbro a few months back.

It is a fuel pump for a 91-96 EGT though if that matters.

[323driver]

temp sensor...

[bcowie]

temp sensor...

is it the same on the B6?

[bcowie]

My thoughts too. What shape are all your vaccum lines in? As a general practice it is good to replace all vaccum lines every so often to eliminate them as the culprit. I have a fuel pump if you want it. Just pay me shipping. Its is a new unit I used for about 8 months-just took it out to install my walbro a few months back.

It is a fuel pump for a 91-96 EGT though if that matters.

Dont think so I'm using my b6 one now

[yunvmyegt]

does the b6 pump even flow enough to run the bpt correct? ive never looked at flow rates of them before.....

[bcowie]

Ive heard that it does although that might explain my leaness at WOT over 4.5k rpm

Anyways I disconnected the waterr thermosensor well see if things improve

[Turpro]

Make the 100 dollar investment for a walbro. That's the 1 thing I'm never worried about now