Ian C Posted November 23, 2005 Share Posted November 23, 2005 - the injectores are full of crap and not spraying like they should. I've seen this before, the car runs like an absolute bag of shite, it'd be very different to a low idle and it would be hard to drive anywhere. It also takes a lot to jam up injectors to this degree... - the fuel pressure regulator is not doing its job as it should (when these go bad, does the car run way to rich or lean?) Never heard of a stock FPR going wrong. If it did it could conceivably produce a rich or lean condition - The ECU is messed up. Generally these things either work or they don't, not produce strange and intermittent side effects. Having said that it may be that a connection to the ECU is marginal, I've seen enough of those before too... what you guys think. I think, you should Check your O2 sensor readings -Ian Link to comment Share on other sites More sharing options...
XtSupra Posted November 23, 2005 Author Share Posted November 23, 2005 thanks Ian, I will do that now as a matter of fact. here is the thing, she runs perfectly. I mean no hesitaions, or loading up, hell some times when turbos kick in in 3rd gear she would break the tires loose(and I am talking Blitz 18x10 with 275/35/18 tires) and she also does that in 2nd gear almost always. ummm maybe I just have a FU$ked up EGT. one more thing please guys, I am trying to install S-AFC and narrow band A/F gauge, I know that A/F gauge is not the best, but that's all what I have (already in had from my other car) and the problem is. the ECU digrams that I got from MKIV.com does not match what I have, so I took the part number out and searched on the net and it says that's an OBD-I ECU for 83-95 TT MT models, can anyone point me to that kind of ECU digram, or tell me the pins location on the socket???? thanks a lot guys, you have been always a great help. Link to comment Share on other sites More sharing options...
TRD3000GT Posted November 23, 2005 Share Posted November 23, 2005 You might need a new fuel filter... If the old one is full of S**T it will be hurting fuel delivery.. Check your exhaust for blockage.. Dented pipe? Cats may have become damaged with high tempratures and melted making a blockage and therefore increasing EGT... Check these things first... Next up get make sure that the fuel rail is getting the fuel pressure it needs.. If its not then between the filter and the rail you are getting problems. Not that then you may need to get the injectors out to be balanced and flow tested.. Thats about as far as Im getting tonight.. Link to comment Share on other sites More sharing options...
Soonto_HAS_soop Posted November 23, 2005 Share Posted November 23, 2005 Narrow band won't tell you anything, had one in my car and it was useless, made it better now by using it as a monitor for my wideband. As a gauge, my narrow band goes off the scale at 11.0 AFR so therefore useless in your situation. Have you tried testing the connections to the ECU? If you have an ECU that has been wired in as you say it has, then maybe you have a dodgy connection, if not try reseting it. Don't waste your money on new injectors as you have the lilacs and they will be fine. My 440's at above BPU levels give better EGTs than that. Link to comment Share on other sites More sharing options...
Soonto_HAS_soop Posted November 23, 2005 Share Posted November 23, 2005 You might need a new fuel filter... If the old one is full of S**T it will be hurting fuel delivery.. Er, I think that he has stated 2 or 3 times that he has replaced the fuel filter.... Link to comment Share on other sites More sharing options...
TRD3000GT Posted November 23, 2005 Share Posted November 23, 2005 Er, I think that he has stated 2 or 3 times that he has replaced the fuel filter.... I did not get to engrosed in reading the lot.. Link to comment Share on other sites More sharing options...
XtSupra Posted November 23, 2005 Author Share Posted November 23, 2005 thanks guys. I just installed S-AFC to see if it's going to help, and it did not well it's funny really, it's like the moment I hooked up it power, gound, TPS, and RPM, and decided to start the car before hooking up the MAF sensor wire and she would have very hard time starting. and before I unhooked it, I decided to fully install it and see if adding fuel will help, and as I mentioned before, it did not help at all. so the S-AFC is going off tomorow (since it makes the car very hard to start) even without hooking the MAF sensor regarding the exhaust, I have no cats and I have restrictor ring mounted between the downpipe and the cat-back. by the way, how would I check the fuel pressure by the rail? is there like a gauge that I buy from toyota to do that, or I will have to make my own connection before before the fuel rail? thanks guys for all the help. Ahmed Link to comment Share on other sites More sharing options...
Soonto_HAS_soop Posted November 23, 2005 Share Posted November 23, 2005 If your fuelling is stock then you will have to make an adaptor for a pressure gauge. If you had an FSE or other FPR then it would have a prefitted adaptor for a gauge. Bit more difficult if yours is indeed standard. Link to comment Share on other sites More sharing options...
XtSupra Posted November 24, 2005 Author Share Posted November 24, 2005 Ok guys, yet another update, could that be the problem. I just checked my O2 sensor reading with a voltmeter and got the following at idle 0.0 volts (using the diagnosis port), I then I hooked up A/F gauge (Automemter led gauge) in the car just to see if I get any reading while driving. I would get no gauge reading at anything less than 2k rpm, then the leds would bounce like how it should, then when I step on it, it stops at the 2nd green led from the yellow leds (not too rich). so does that mean I have faulty O2 sensor, or I am just hardly getting any fuel to be read at idle????? also, My 2 weeks old Sard EGT went south on me, while I was installing and uninstalling my S-AFC, it just decided to start reading at 800C and go from there as it warms/heats up. I got greddy EGt to replace it tho (damn does it ever end) Link to comment Share on other sites More sharing options...
b_have Posted November 24, 2005 Share Posted November 24, 2005 thanks guys. I just installed S-AFC to see if it's going to help, and it did not well it's funny really, it's like the moment I hooked up it power, gound, TPS, and RPM, and decided to start the car before hooking up the MAF sensor wire and she would have very hard time starting. and before I unhooked it, I decided to fully install it and see if adding fuel will help, and as I mentioned before, it did not help at all. so the S-AFC is going off tomorow (since it makes the car very hard to start) even without hooking the MAF sensor regarding the exhaust, I have no cats and I have restrictor ring mounted between the downpipe and the cat-back. by the way, how would I check the fuel pressure by the rail? is there like a gauge that I buy from toyota to do that, or I will have to make my own connection before before the fuel rail? thanks guys for all the help. Ahmed Must be worth at least a tenner? Link to comment Share on other sites More sharing options...
XtSupra Posted November 24, 2005 Author Share Posted November 24, 2005 Must be worth at least a tenner? what's that? 10er ?????? you lost me man Link to comment Share on other sites More sharing options...
Rich Posted November 24, 2005 Share Posted November 24, 2005 hes on about the joining fee for you to become a full member-its nice to have overseas members on board:welcome: Link to comment Share on other sites More sharing options...
XtSupra Posted November 24, 2005 Author Share Posted November 24, 2005 I am sure I can do that. but how tho?? I have no paypal account, I will read the FAQ and see if I can find a nother way. RICHIE S, thanks a lot for the welcoming. Link to comment Share on other sites More sharing options...
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