Problems with the 3.4 TURBO-again

[Matt Hawkins]

You have a bunch of money in that car. You should get at a minimum a wideband. And either a tuner for your PCM or a standalone.

[d.o.h.c]

really, Well i think I am going to use him. Sounds like he knows like he is talking about

[Emc209i]

Ryan at Sinister is the best LQ1 tuner I think I've ever come across.

[d.o.h.c]

OMg thanks I will try them

[FieroWannaBe]

How can I do a tune on a obd 1.5. I have to do a obd II swap and get someone with an hp tuner do the tuning. I replace the FPR. I am adding the FMU back in with a 4.1 ratio

http://dtcc.cz28.com/eprom/index.htm he can do 1.5

[d.o.h.c]

I have been told the obd II is the best, so I will try and find the harness and go from there

[1988GTU]

SOL with "1.5" time to move back to the better obd1 or goto obd2... Standalone works too!

[d.o.h.c]

How can I do a tune on a obd 1.5. I have to do a obd II swap and get someone with an hp tuner do the tuning. I replace the FPR. I am adding the FMU back in with a 4.1 ratio

[1988GTU]

Are you not tuned already though? Could also be just the rrfpr adding too much fuel upon start up causing for a slight fouling of the plugs.
If you're in of a tune, do it asap!

[d.o.h.c]

i did check the fuel pressure, a steady 40lbs when primed. I always watch my a/f gauge when under boost, if its not green I stop. You think that it could just need a tune?

[1988GTU]

Over fueling maybe? Do a injector leak down test since everything else seem to have checked out good before?? ... Also did you ever do a fuel pressure test? If not, What's stopping you? One lean condition under boost could cost you a engine!

[d.o.h.c]

Hey guyes, I am still having a problem with starting the car. It cranks good, just takes 10-13 seconds of cranking to get it to start and once it starts it puffs a little smoke and smells bad of raw gas

[d.o.h.c]

Its wierd as fuck man, I had the fmu with the 3 psi spring and it worked perfect. I had it hooked up with the 7 psi spring and it was not working past 3 psi. It was putting way to much fuel in. SO i disconnected it and it works perfect. The a/f gauge reads green/ yellow with no fmu at 5 psi. So I have no idea. I did replace the FPR though.

[1988GTU]

It was the FMU.

Figured.

[RedZMonte]

what was wrong with it? it sounded like the same thing as you originally had so i knew it had to be something in your fuel delivery.

S