We'll I just put a new head in my evo iv replaced with Tommi makinen head cams etc,new belts new gaskets head tourqued correctly now every time in push it in high rpms it just turns of then I have to start engine again.

Also another problem I am experiencing is when I drive the car for about ten minutes when it's hot it's very hesitant,jerkin,no power to the point where I can't even drive 20km per hour and it just dies when I try to accelerate.

Please help me I'm about to junk this car as it's been pissing me off so bad problem only occurs when I drive it for ten minutes or so and then it will just jerk ,no power,stall, can't even move it until I leave it for twenty mins or so .temp is normal on it no overheating or anything

Please somebody she'd some light on this for me before I burn this evo so much money spent and I'm not in a financial position anymore to keep throwing money at this piece of sh#%*. It has so many mods and I just don't know what to do ...........

Thanks in advance

For some reason I don't think these problems are linked I think they are two separate problems am I right? And also I have just installed my external waste gate and have have the vacuum hose from turbo to the inlet for electronic boost controller and a hose from the outlet nipple to the side external wastegate port and vented the top of the external wastegate is this correct .? Please evo gods help needed so badly have a young family and this is our only source of transport .
Thanks guys sorry for rambling on.

 

When did these problems begin? Right after the head work? Or after the WG install?

Define "high RPMs". Is it random or always when you hit the same exact RPM?

IMO, I don't think it is related to the head work. I'm no expert but the stalling, jerking scenario sounds more like an issue due to the recent WG install. (or something vacuum related anyways)

Help us to help you. Any more small details? Something may spark an idea in someone else's brain

 

Hi there thanks for your response,I installed the wastegate and the head at the same time , the high rpms are like if I rode any gear on hard boost and the car will blow off and then just turn off and I have to start it again I have done all the work with my brother who is a mechanic but not very experienced in turbo cars so we have hooked up mainly all the vacuum hoses bit there is a black cylinder shaped regulator that I can't seem to find where the hoses go and I'm not sure if wastegate is hooked up correctly sorry I hope this helps abit

 

Anyone that can shed light on this situation don't be shy !lmao

 

Take some pictures of the engine bay to show how vacuum lines are hooked up and post them up...take one of this black cylinder shaped regulator you are talking about....Too hard to tell with the info you've given...

Best bet is to take it to a evo specialist like someone else mentioned in the other thread you started asking for help.

GL!

 

Ic pipes blowing off at high boost?

 

Nah bro I removed that thing that was connected to the manifold so I had to block that hole on the inter cooler down pipe and that popped off but other than that I'm still having the same problem would you know what kind of problem an O2 sensor would cause?