player2287 Posted August 1, 2011 Report Share Posted August 1, 2011 Just replaced injectors and replaced fuel line from throttle body to filter.... Now the car cuts out at high rpm....(3500-4000 rpm) As soon as i back off the trottle it is fine.... Any ideas???.... Tks Link to comment Share on other sites More sharing options...
BrazilBoy Posted August 1, 2011 Report Share Posted August 1, 2011 Needs TPS ISC reset then see how she goes.... Link to comment Share on other sites More sharing options...
Indiana Posted August 1, 2011 Report Share Posted August 1, 2011 What spark plugs and their part # you using? Link to comment Share on other sites More sharing options...
player2287 Posted August 1, 2011 Author Report Share Posted August 1, 2011 Thanks for the reply but what is the TPS ISC reset and where do I do that????? Tks Link to comment Share on other sites More sharing options...
StarquestRescue Posted August 1, 2011 Report Share Posted August 1, 2011 Just replaced injectors and replaced fuel line from throttle body to filter.... Now the car cuts out at high rpm....(3500-4000 rpm) As soon as i back off the trottle it is fine.... Any ideas???.... TksWe need to know what if any mods you have on the car. Link to comment Share on other sites More sharing options...
player2287 Posted August 1, 2011 Author Report Share Posted August 1, 2011 We need to know what if any mods you have on the car.The engine has been totally rebuilt but the rest of the systems are origional.... stock fuel injection and so on...... Like I said had the injectors replaced a month ago and everything was fine... Then I blew the fuel line from the throttle body to the fuel filter.... Had a new one make and the cutting out problem started.... Only seem to happen when the engine is really pulling.... 3500-4000 rpm. Seems like the secondary injector but I don know. Thanks for any help or ideas........... Link to comment Share on other sites More sharing options...
StarquestRescue Posted August 1, 2011 Report Share Posted August 1, 2011 New injectors or used? Oem or after market? Go over your ignition system. These cars tend to be really rich in that rpm range. Secondary problems tend to show up lower in the power band, like right after you floor it. Link to comment Share on other sites More sharing options...
player2287 Posted August 2, 2011 Author Report Share Posted August 2, 2011 New injectors or used? Oem or after market? Go over your ignition system. These cars tend to be really rich in that rpm range. Secondary problems tend to show up lower in the power band, like right after you floor it.They are new after market injectors....... If I don't floor the car it is fine but when I floor it and it hits 3k-4k rpm it cuts out totally until i let off the throttle. Link to comment Share on other sites More sharing options...
81zfan Posted August 2, 2011 Report Share Posted August 2, 2011 ^^^ I am having the same problem right now!! I have been trying to narrow it down for a damn month. Right now I am waiting on a TPS to come in the mail. Link to comment Share on other sites More sharing options...
1988 quest Posted August 4, 2011 Report Share Posted August 4, 2011 http://starquest.i-x.net/viewtopic.php?t=907 Link to comment Share on other sites More sharing options...
Shelby Posted August 4, 2011 Report Share Posted August 4, 2011 whats the oem boost gauge doing when this happens if it goes nuts it's a boost pressure leak Link to comment Share on other sites More sharing options...
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