Mr2 turbo problems...

Dogbreath · 24 Apr 2009 at 11:00

gobbo said:
Rev 3s have MAP, Rev 1 & 2 have MAF so i'd suggest giving MAF sensor a clean, even if just to rule it out!

The MAF sensors are the flap type, rather than hot wire so they don't really suffer from oil contamination. They can fail with age though.

Neil79 · 24 Apr 2009 at 13:19

Thanks for the replies...

About the lean fuel starvation , if this is the case why is it using so much fuel and with a high idle 950-1000rpm hot , low idle 1100 cold!

The timing was done not so long ago , 3 months we did it ourselfs with a timing gun.

Yes its running 98+ has and always will be , i've had the car for ni on 5years.

MBC no it has an EBC (blitz) 15Gain 52Ratio... The read out was showing 1.11 kg/cm2 = 15.7psi at the time which is just under 1.1. I did turn that down to eliminate the possible cause and it still did it.

Neil79 · 24 Apr 2009 at 14:17

Checked my spark plugs and they are very sooty , so it is certainly overfueling by too much

Dogbreath · 24 Apr 2009 at 14:53

Neil79 said:
Checked my spark plugs and they are very sooty , so it is certainly overfueling by too much

You don't have a silly atmospheric dump valve fitted to it do you?

Neil79 · 24 Apr 2009 at 15:08

Dogbreath said:
You don't have a silly atmospheric dump valve fitted to it do you?

Neil79 said:
and no Atmos Bov just the oem

numnutz · 24 Apr 2009 at 16:37

I'd vote boost leak. Easiest way to check is to pressurise the whole inlet side. I.e block it off at turbo and inlet plenum, and then any idle take off's etc. Then find somewhere to attach a bike tyre pump and get pumping, Use washing up liquid / water to help.

Concrete · 24 Apr 2009 at 16:53

Dogbreath said:
Mine gave simmilar symptoms just before the fuel pump expired.

My money is on this. Fuel pump is dropping pressure, ECU measuring temp increase due to running lean and floods it.

howler · 24 Apr 2009 at 16:58

boost leak or fuel pump i suspect

Cover your hoses in soapy water and check for bubbles for boost leak

fuel pump, well you need to get a know working one to test it, make sure the wiring hasn't correded too

Neil79 · 24 Apr 2009 at 17:21

Thanks guys , if i get anymore updates i'll let u know

Hate · 24 Apr 2009 at 19:09

I didn't think a CT26 was too happy with that level of boost, although It's been a while.

Neil79 · 24 Apr 2009 at 19:23

Hate said:
I didn't think a CT26 was too happy with that level of boost, although It's been a while.

CT20B

Neil79 · 25 Apr 2009 at 16:29

I replaced all my boost controller tubing in the car even underneath , reset the boost controller . Did a drive test and ended up with 18 Gain , 46 Ratio for 14psi went much further than i did the other day and drove the car harder... No problems , no hesitations and bad running