Stimmel1647545512 Posted July 27, 2010 Report Share Posted July 27, 2010 I have an 88 GT 5 speed that has been converted over to mass air with a a9p and the motorsport harness that was done almost a year ago and nothing has changed since.. the car sparaticly idles odd and ocasionally it has a miss to it at high rpm or feels like the motor shut down on me today under full throttle and had nothing but 10 min later while crusing layed into it in second and it pulled without loosing power except for the slight miss high end the car has a slight leak in the fuel line near the front subframe but has for a year or so now (doesnt get driven much) any ideas distributor has been rebuilt IAC and TPS are both newer wires and coil are newer MSD parts plugs are stockers that have been in there for a few years what usually makes mass air cars act like this? Thanks Quote Link to comment Share on other sites More sharing options...
Stimmel1647545512 Posted July 27, 2010 Author Report Share Posted July 27, 2010 also I had been running 93 or 89 in it lately then last time i put about 20 bucks in gas in it and used 87 and the problems started a few min later bad gas maybe? the car also runs flawlessly when in gear just cruising Quote Link to comment Share on other sites More sharing options...
Stimmel1647545512 Posted August 7, 2010 Author Report Share Posted August 7, 2010 I have been running through alot of stuff and havent come up with anything the car only acts up when its been idling in the same spot for a few minutes any ideas? wiped the cam? spun a bearing? still no lack of performance but on decel it pops alot Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted August 8, 2010 Report Share Posted August 8, 2010 clean the maf and see what happens Quote Link to comment Share on other sites More sharing options...
Stimmel1647545512 Posted August 9, 2010 Author Report Share Posted August 9, 2010 the maf is clean the car runs like crap at first start up for a few then smooths out and only acts up when i am sitting at a light long enough and gets real rich like can smell it comming in the car rich Quote Link to comment Share on other sites More sharing options...
2 Sweet Posted August 9, 2010 Report Share Posted August 9, 2010 Have you checked fuel pressure? Quote Link to comment Share on other sites More sharing options...
Stimmel1647545512 Posted August 10, 2010 Author Report Share Posted August 10, 2010 yea its fine right around 43 at all times where it should be car has a newer pump and adj fuel regulator in it Quote Link to comment Share on other sites More sharing options...
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