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  1. jetjock

    will an exhaust leak give you shitty gas mileage?

    No. But it'll likely effect emissions if it's before or around the cat. To work the cat must be fed a composition of exhaust gases that only occur in a very narow range of engine control. That's the reason the O2 sensor is there to begin with. It's why any engine that's not running in control...
  2. jetjock

    will an exhaust leak give you shitty gas mileage?

    Shhh....or everybody will want one ;). Any questions, ask. Hey, do you still have EGR on your car? PM me if you do.
  3. jetjock

    will an exhaust leak give you shitty gas mileage?

    I missed the "manifold" part as I was responding to the thread title. My point stills stand though: any leak upstream of the O2 sensor will cause the condition Nick pointed out. It may even be bad enough to drive the sensor all the way lean. In any case, the ecu will add more fuel to compensate...
  4. jetjock

    Part throttle misfires

    I'm confused. If you think 3.5 is normal why does it "sounds dead to me"? Understand, I'm not saying 3.5 is bad nor am I saying misfire can be TPS related. Others are saying that. I'm only confused why you feel the TPS was dead one post and normal the next?
  5. jetjock

    will an exhaust leak give you shitty gas mileage?

    Any codes? If it's located upstream of the O2 sensor it certainly would. Otherwise no.
  6. jetjock

    Oil

    Amen to that. He can use what he likes. As long as he understands the 20-50 will be eight times thicker when it's a 20 then when it's a 50 he's good to go. Gives me the creeps though.
  7. jetjock

    Battery

    It's set up for a Group 78 but I prefer to use the smaller Group 75 because I use the extra room for a Priority Start system. You can research the dimensions for standard battery groups on the Net.
  8. jetjock

    trouble with idle

    Lol, is this the same guy? Guess I should pay more attention ;). I couldn't see the photo but if he's sucking on the canister full time it could be his sensor is swung rich. It may be a leak but it's sucking on HC, not air. Bad evap systems are often a cause of high HC on emissions tests. At any...
  9. jetjock

    trouble with idle

    There is no ISC "sensor" You mean the ISC valve? All that'll do is freeze the idle speed at whatever it was when you unplugged it. If the engine still hunts you have other problems. Measure the O2 signal in the diag block, there's a terminal there just for that. Look at your TSRM for info. It...
  10. jetjock

    vaccum line???

    Not good to have those lines connected at all times. Either replace the BVSV or cap the line at the TB. No need to vent the gas tank unless you remove the canister and plug it's line. The canister will be become saturated though so if I were you I'd replace the valve. Also, if you live where...
  11. jetjock

    trouble with idle

    You shouldn't just throw parts at the car, especially since it's telling you what the problem is. Measure the O2 sensor signal at 1500-2000 rpm when the engine is hot. The codes you have indicate it's stuck at either at full lean or full rich. Find out which it is and go from there. If it's...
  12. jetjock

    Tell me why it won't spark!

    I was going to say something similiar. According to that pinout the A connector has only grounds and injector outputs (also grounds). And looking at my schematics I don't see any relation of that connector to the 7.5 IGN fuse. I see no way for a fault in the ecu A circuit to cause excessive...
  13. jetjock

    Supra Start Up Prob!!

    What the heck is "grammer?" ;) So it's not a 7M? Would've been nice to know that in the beginning. So were talking conventional EFI and not TCCS. Can't help, don't have any prints of that setup. Still, as far as I know Toyota conventional EFI works pretty much the same way. You have to have...
  14. jetjock

    A/C Refrigerant leak problem...

    The system can leak anywhere. Usually it's hoses and connections but it can be pinholes in piping, the evap or condensor, the service ports can leak (you have caps on them right?), compressor shaft, compressor/hose manifold connection, anywhere. You must have a pretty good leak to lose it all...
  15. jetjock

    To all N/A owners: I highly recommend the SOGI short shift mod

    Lol @ this thread... Thanx doc, I like the way you think! Btw, I do "use" your site. Since I'm all about tech (and not drinking, guns, body piercing, dope, run amuck hormones, gratutious profanity, moronic conspiracy theories, rampant immaturity, using a car as an extension of my penis, 10...
  16. jetjock

    To all N/A owners: I highly recommend the SOGI short shift mod

    Dude? Me? Lol... Not trying to be an ass, just pointing out how some people are too lazy to think on their own. He would've expended less keystrokes doing it my way but I still gave it to him. From where I sit there's little offensive about that. Since you weren't the one asking what's your...
  17. jetjock

    A/C Refrigerant leak problem...

    Well, you have to fix the leak. Since the refrigerant circulates the oil a leak that big should be easy to spot: look for oil around connections, on hoses, on the condensor, behind the compressor clutch (shaft seal leak) ect. Just follow the system. It could be a leak in the evaporator. Pray...
  18. jetjock

    A/C Refrigerant leak problem...

    Tsk, tsk Johnathan. So you didn't leak check it and just slammed some 134 in there? What'd I tell you about doing AC work right? Good think you didn't put the pricey stuff in huh? ;) Sounds like your evap drain tube is plugged. The liquid couldn't be refrigerant since refrigerant boils at the...
  19. jetjock

    To all N/A owners: I highly recommend the SOGI short shift mod

    Rocket science. Put "marlin crawler" in google, select products, transmissions, parts and accessories: http://tinyurl.com/m2cu4