ok so just got car started yesterday

it wont boost at all...when the gauge gets to the 0 its like hitting a wall...the car just bucks and wont go anywhere...

car is non seq...has a power fc

i have no wastegate control solenoid right now...just a straight vac line from the actuator to the vac nipple on the turbo...could this be the problem?

it sort of feels like when the vac line from the map sensor comes off...but it didnt

any help would be appreciated

thanks

 

Try your spark plug wires could be on the wrong plugs.Or try back probing the
Map sensor wires from the sensor end to the ECU plugs.

 

If it's bucking it's not a boost problem.

I'd look at injectors, fuel pressure, or ignition.

 

hmm...well spark plugs are fine...

normal driving the car is fine...just when i try to boost it wont...

so its likely an electrical thing?

car idles fine...vac is at 18
injectors just got cleaned
spark plugs are correct

 

ooo well looking at this diagram

the vac line on the wastegate actuator... the right side should be hooked up the the turbo inlet and the left should be on the outlet side right?

i think i had the right side capped off...would that cause it?

 

Try revving WOT in neutral - if it reaches a few PSI in neutral, I suspect the turbo system is producing boost. Boost problems aren't usually rough - just a lack of power and response.

Now I see your other post. To get 7psi, you should have the left line hooked up the compressor nipple tree, with no pill inside. The right line should be capped or running to a solenoid or boost controller. If you ran that line to the inlet you'd vent all the pressure going into the actuator and prevent the wastegate from opening at all - a Very Bad Thing.

How is your precontrol set up? The same way?

I had symptoms like this when my injectors weren't flowing properly. Freshly cleaned and tested by a real injector shop, and the car ran just fine. Who cleaned your injectors?

Dave

 

k ill try that...pretty sure i wasnt boosting at all in neutral though think i got more vac?

i just put in a fresh set of injectors in this motor before i started it

 

ok i read your thread about your injectors and it sound exactly like my problem...haha

i had a local shop clean mine too and they didnt have the fitting for it just like yours...lol...oh well...guess im pulling them and shipping to witchhunter