Hey guys, got an 87 GN with 90,000 miles. Car is completely stock and was running good but started having issues getting above 3000 RPM when on the road. Starts and runs fine and while in park or neutral will rev to 4000+RPM and accelerates normally but when on the road will not get above 3000 RPM and just kind of stops producing power as it gets around 3000. Turbo does spool some but it doesn't really add much kick and there is just an overall lack of power. Can get to around 50 MPH but that is it. Car has a new stock fuel pump and since trying to troubleshoot this issue have replaced ECM, chip, MAF, ignition module and coil pack. No change at all after replacing all these compenents.
Just got a Scanmaster and should have it installed this week and I know that will help me troubleshoot. Any thoughts on what this could be? Engine does not miss and runs smoothly but when it gets to around 3000 rpm does make a few pops as it flattens and stops making power. Help!
Just got a Scanmaster and should have it installed this week and I know that will help me troubleshoot. Any thoughts on what this could be? Engine does not miss and runs smoothly but when it gets to around 3000 rpm does make a few pops as it flattens and stops making power. Help!