Goat Posted October 16, 2007 Share Posted October 16, 2007 My flatmate's 89 GT4 is having some really weird issues. The boost gauge is saying its boosting 7 pounds. But its running like a non turbo. It did it last night and was fine this morning. And its just done it again. It suddenly happened while he was driving. We checked all the vacuum hoses and nothing appears to be out of place. What could be causing this? Chur Quote Link to comment Share on other sites More sharing options...
eke_zetec_RWD Posted October 16, 2007 Share Posted October 16, 2007 will be timing forsure. is speedo ect all conected? wont be advancing etc Quote Link to comment Share on other sites More sharing options...
kpr Posted October 17, 2007 Share Posted October 17, 2007 yeh, it'l be retarding the timing for some reason, detecting knock or somthing. or the sensor or wiring is bung. what fuel has it got in it? check the error codes Quote Link to comment Share on other sites More sharing options...
Goat Posted October 17, 2007 Author Share Posted October 17, 2007 Was running fine this morning again . Running 95. he took it to the toyota service people and that checked the codes and all the sensors are fine. No error codes. The toyota guy said change the plugs and leads. Could that be causing this? Cheers for the help/suggestions Quote Link to comment Share on other sites More sharing options...
eke_zetec_RWD Posted October 17, 2007 Share Posted October 17, 2007 my turbo primera did this when the speedo cable broke, the ecu thort i wasnt moving so wasnt advancing the ignition. Quote Link to comment Share on other sites More sharing options...
Goat Posted October 17, 2007 Author Share Posted October 17, 2007 I wondered what you were on about with the speedo drive His speedo works fine. Will just change leads and plugs and see if that helps. Otherwise it will be a right cunt to trace Quote Link to comment Share on other sites More sharing options...
kpr Posted October 17, 2007 Share Posted October 17, 2007 wouldnt think the plugs or leads would do it. as you'l get a noticeable misfire, to make it loose that much power. could be a fuel issue, filter or dying fuel pump. could try some 98 in it or retard the base timing. to rule out knock Quote Link to comment Share on other sites More sharing options...
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