djsix66 Posted March 18, 2008 Share Posted March 18, 2008 Hi All, I Hope Somebody Has Some Sort Of Idea What Maybe Going On With My Gt??On Last Wednesday I Noticed A Slight Misfire On The Dual Carriage Way When Pushin My Foot All The Way Down On The Gas,It Gradually Became Worse So I Changed My Ht Leads,distributor Cap,spark Plugs And Rotor Arm To Sort The Problem Today.The Car Is Now Sweet As A Nut....only Upto 4000rpm When It Begins To Bog Out And Misfire Creating A Juddering Like Feeling Like Before????The Car Never Stalls Once The Revs Lower,It Settles Back Normal Tick Over Fine And Theres No Smoke Of Any Sort That Looks Out Of The Ordinary,I Really Dunno Whats Up With It??Two Different Mechanics Told Me To Do The Same Thing...which Id Already Done By This Time And That Was To Change Leads Etc...Has Any Body Had This Sort Of Problem Before???I Hope Somebody Can Help. Thanks Quote Link to post Share on other sites
StarletRick Posted March 18, 2008 Share Posted March 18, 2008 check your boost. and does your engine light come on?if youre going over 13 psi then youre hitting the fuel cut... if not, and its just everytime you plant it, youve probably got water on the plugs. Quote Link to post Share on other sites
RobSR Posted March 18, 2008 Share Posted March 18, 2008 yup as rick has said,....most probs fuel cut..do you have a boost gauge? If not get one! Quote Link to post Share on other sites
djsix66 Posted March 18, 2008 Author Share Posted March 18, 2008 Hi Bud, The Bottom Far Right(on The Dash Display) Orange Instrument Illuminates Now And Then For Some Strange Reason??at Random Times,sitting In Traffic Or On The Motorway?? Its Only Been Doing It Since This Misfire Problem...I Sound Like A Clown But Im Unsure What This Light Indicates??Once I Push The Key Fob Button This Illuminates The Same Light Which Then Goes Out And The Engine Can StartI Thought It Was Just A Flickery Immobiliser Light??You Mentioned It Could Be Cutting The Fuel??I Havnt Touched The Car In Any Way Such As Messin With The Boost Etc....basically Because I Havent A Clue What Im Doing!!Therefore I Cant See Why Its Started To Do This All Of A Sudden?I Need To Contact A Reliable Turbo Specialist In The South West But Who To Go To God Only Knows!! Quote Link to post Share on other sites
RobSR Posted March 18, 2008 Share Posted March 18, 2008 The light on the dash is basically a warning showing that something is wrong...this usually comes on when hitting fuel cut..Have you modified the car in anyway atal, i.e free flowing exhaust and or airfilter?Rob Quote Link to post Share on other sites
djsix66 Posted March 18, 2008 Author Share Posted March 18, 2008 The light on the dash is basically a warning showing that something is wrong...this usually comes on when hitting fuel cut..Have you modified the car in anyway atal, i.e free flowing exhaust and or airfilter?RobHI ROB,NA I ALL IT HAS ON IT IS A K&N FILTER IN THAT RESPECT,MY BOOST GAUGE READS IN LB/0'' AND GOES FROM 9 O'CLOCK BEING 20(WHICH IS IDLE)UP TO 5?? WHICH WOULD BE 2 OCLOCK WHEN ACCELERATING...I've HAD THE CAR FOR ABOUT 5 MONTHS AND ITS NEVER DONE THIS BEFORE??IT SOUNDS LIKE A LIMITER KICKING IN BUT WITH THE BONNET OPEN YOU CAN HEAR A MISS FROM THE ENGINE??A HOUR AGO A LOCAL GARAGE HAD A LOOK....THE GUY WAS JUST KICKIN THE TYRE SCRATCHIN HIS HEAD BASICALLY AND SAID YOUR GUNNA HAVE TO SEND IT TO A SPECIALIST!! Quote Link to post Share on other sites
StarletRick Posted March 18, 2008 Share Posted March 18, 2008 run the engine till its up to running temp, then turn it off and pull the plug leads out. if you got any steam or anything coming out, youll have water in the leads. and mate, get a proper boost gauge, 5 o clock? wtf? Quote Link to post Share on other sites
djsix66 Posted March 18, 2008 Author Share Posted March 18, 2008 run the engine till its up to running temp, then turn it off and pull the plug leads out. if you got any steam or anything coming out, youll have water in the leads. and mate, get a proper boost gauge, 5 o clock? wtf?NO STEAM OR WATER IN THE LEADS OR PLUG HOLES BUD,THEY ARE DRY AS A BONE AT ALL TIMES...THE PLUGS ARE NOT WET,ALL THE SAME COLOURHOW IS THE BOOST ADJUSTED? TO THEN KNOW ONCE ITS TURNED DOWN IF THIS IS THE FUEL CUT PROBLEM?? Quote Link to post Share on other sites
StarletRick Posted March 18, 2008 Share Posted March 18, 2008 build the revs up really slowly. so that there is no boost at all. if it still does it, then its a timing issue. and the water on the plugs in on the leads, not in the comp chamber. Quote Link to post Share on other sites
djsix66 Posted March 18, 2008 Author Share Posted March 18, 2008 NO THERES NO WATER INVOLED IN OR AROUND ANY PLUGS OR LEADS.THAT IS WHAT IT DOES....THE REVS RISE UP WITH NO BOOST LIKE YOU SAID HOW TO DO IT,THEN THE MISS FIRE STARTS AGAIN AT 4000RPMTIMING IT IS THEN YEH?? Quote Link to post Share on other sites
djsix66 Posted March 18, 2008 Author Share Posted March 18, 2008 IM STILL PUZZLED AS THE WARNING LIGHT IS STILL PLAYIN UP, MAYBE IT S NOT A FUEL CUT PROBLEM?? Quote Link to post Share on other sites
djsix66 Posted March 19, 2008 Author Share Posted March 19, 2008 . Quote Link to post Share on other sites
StarletRick Posted March 19, 2008 Share Posted March 19, 2008 if its doing it when you are off boost aswell, then yes its a timing issue. have you changed the plugs? Quote Link to post Share on other sites
djsix66 Posted March 19, 2008 Author Share Posted March 19, 2008 YEH PLUGS LEADS ROTOR ARM AND DISTRIBUTOR CAP,ALL BEEN CHANGED.HELD THE REVS DOWN SOFTLY SO THAT MY BOOST GAUGE DIDNT BUDGEAS SOON AS IT HITS 4000RPM ITS MISSING AGAIN BUT ONLY AT THAT RPM...CANT PUSH THE REVS PAST THIS POINT ATALLITS DRIVING ME CRAZY... Quote Link to post Share on other sites
StarletRick Posted March 19, 2008 Share Posted March 19, 2008 try resetting the ecu... only thing i can think of is that its gone into some kind of safe mode. disconnect the battery for half an hour, then re connect it all and try again. Quote Link to post Share on other sites
djsix66 Posted March 19, 2008 Author Share Posted March 19, 2008 OK IL TRY IT N LET YOU KNOW THANKS MATE.WITH REGARDS TO A TIMING ISSUE-DO YOU RECKON IT WOULD BE MISSING THROUGHOUT THE WHOLE REV RANGE NOT JUST AT 4000RPM UP?? Quote Link to post Share on other sites
RobSR Posted March 19, 2008 Share Posted March 19, 2008 when you fitted the new plugs did you space them correctly? Quote Link to post Share on other sites
StarletRick Posted March 19, 2008 Share Posted March 19, 2008 hes running standard so they should be pre spaced at 1.1mm....and again that would still only really start giving you jip while on boost. Quote Link to post Share on other sites
djsix66 Posted March 19, 2008 Author Share Posted March 19, 2008 JUST TOOK MY GT TO A TUNING CLINIC,DIAGNOSED THE PROBLEM AS BEING A FAULTY THROTTLE SENSOR...SHOULD HAVE THE PROBLEM SOLVED NOW...(I HOPE)ANY IDEAS WHERE I CAN BUY A SECOND HAD DRIVERS SIDE WINDOW MOTOR,THATS GONE ASWELL!! Quote Link to post Share on other sites
StarletRick Posted March 19, 2008 Share Posted March 19, 2008 the TPS??? i thought you said it was doing it on light throttle touches too? the 4e has a switch system for the TPS, so it shouldnt make a difference? hmm, how odd. at least youve sorted it out now mate. Quote Link to post Share on other sites
RobSR Posted March 19, 2008 Share Posted March 19, 2008 lets hope that sorts it then! Quote Link to post Share on other sites
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