cruiser54 Posted December 22, 2012 Share Posted December 22, 2012 Unplug the connector and see if the output voltage pin retracted or something. Link to comment Share on other sites More sharing options...
last254 Posted December 23, 2012 Author Share Posted December 23, 2012 tps can't go above .55volts and i need .83 even the new tps can't get above .55 its like i need to turn it counterclockwise more but it won't go anymore. the mj stalled today tho and i couldn't get her to start again i have to get a ride to work now but I'm gonna test the cps tomorrow....also the other day i tightened all the manifold bolts but i guess i missed one and i saw it on the ground when i pulled away so i found where it was missing and got it in however the idle is ok at start up and i noticed that if i pull on the throttle cable at all and return it to its position then the idle is 1600 or more i guess you could say I'm frustrated right now.. Link to comment Share on other sites More sharing options...
cruiser54 Posted December 24, 2012 Share Posted December 24, 2012 Cruiser’s Renix Throttle Body Butterfly Adjustment Okay. Let's start from scratch. First off, that's not an idle adjustment screw. It's a throttle butterfly stop screw. It's purpose is to allow the butterfly to be as close to completely closed as it can be without binding or wearing into the throttle body. It was never intended to be adjusted in the field. But, Uncle Bob didn’t know that, did he? Engine off. Back off the butterfly stop screw with a 3/32” allen wrench until the butterfly is completely closed. Now. turn the screw in until the FAINTEST movement of the butterfly opening is detected. This can be done more easily with the throttle body removed. If you remove the throttle body, be sure to replace the gasket underneath it after thoroughly cleaning the old one off. Revised 07/07/2012 Link to comment Share on other sites More sharing options...
last254 Posted December 24, 2012 Author Share Posted December 24, 2012 that sounds like a great idea ill do it tomorrow before some last minute christmas shopping Link to comment Share on other sites More sharing options...
cruiser54 Posted December 24, 2012 Share Posted December 24, 2012 Check it first if you can. Easiest to do with the tB removed. Use a new gasket. Link to comment Share on other sites More sharing options...
last254 Posted December 25, 2012 Author Share Posted December 25, 2012 ok so had to check the no start issue of course before doing tps so i checked the cps and i don't know how to explain what happened but basically the cps looks good but the female connector and all the wires coming out of it are just gone, just gone! just some bizarre thing i guess i don't if it got yanked out somehow or what happened but ill buy a cps tomorrow so it can be replaced. Link to comment Share on other sites More sharing options...
last254 Posted December 26, 2012 Author Share Posted December 26, 2012 new cps in and tps is adjusted as well as butterfly stop screw and idle is at 1000 rpm right now I'm very happy thanks for all the help guys Link to comment Share on other sites More sharing options...
cruiser54 Posted December 26, 2012 Share Posted December 26, 2012 Make sure CPS wires are secured up and away from the exhaust manifold. Had someone messed with the butterfly screw on the TB? Link to comment Share on other sites More sharing options...
last254 Posted December 27, 2012 Author Share Posted December 27, 2012 ya the screw was way in the butterfly valve linkage didn't even touch it it was rubbing up on the throttle body Link to comment Share on other sites More sharing options...
cruiser54 Posted December 27, 2012 Share Posted December 27, 2012 ya the screw was way in the butterfly valve linkage didn't even touch it it was rubbing up on the throttle body I don't understand. Punctuation? Link to comment Share on other sites More sharing options...
last254 Posted December 28, 2012 Author Share Posted December 28, 2012 ya the screw was way in. the butterfly valve linkage didn't even touch the screw when it was closed, it was rubbing up on the throttle body. haha Link to comment Share on other sites More sharing options...
cruiser54 Posted December 28, 2012 Share Posted December 28, 2012 ya the screw was way in. the butterfly valve linkage didn't even touch the screw when it was closed, it was rubbing up on the throttle body. haha So you set it according to the write-up? I wonder if anyone turned the Torx air bleed screw on the driver's side of the TB. Is your exposed or does it have the plug over it? Link to comment Share on other sites More sharing options...
DrHeadlightNJ Posted December 29, 2012 Share Posted December 29, 2012 is this the same procedure for an 86 2.5L Link to comment Share on other sites More sharing options...
cruiser54 Posted December 29, 2012 Share Posted December 29, 2012 is this the same procedure for an 86 2.5L No. The 86 is a throttle body fuel injection system where the 4.0 is a multi-port system. What's your issue? Link to comment Share on other sites More sharing options...
last254 Posted December 30, 2012 Author Share Posted December 30, 2012 mine is exposed and it seems like it could have been tampered with do you have a right up for that as well? Link to comment Share on other sites More sharing options...
cruiser54 Posted December 30, 2012 Share Posted December 30, 2012 Your what is exposed? FWIW, all of my current write-ups are in the link sown below in my signature. Link to comment Share on other sites More sharing options...
last254 Posted December 31, 2012 Author Share Posted December 31, 2012 Torx air bleed screw on the driver's side of the TB. this is exposed there is no plug like you suggested Link to comment Share on other sites More sharing options...
cruiser54 Posted December 31, 2012 Share Posted December 31, 2012 With it idling, see what happens as you turn that Torx- headed screw clockwise. Link to comment Share on other sites More sharing options...
last254 Posted January 1, 2013 Author Share Posted January 1, 2013 i turned the torx air head screw all the way clockwise and the idle is quieter but not really a change in rpm's which are still good at steady 1000. so much quieter that i can really hear my failed catalytic converter...btw i've noticed that after i drive around my idle as stoplights is still 1500 rpm now haven't driven since i turned the torx air head screw though Link to comment Share on other sites More sharing options...
cruiser54 Posted January 2, 2013 Share Posted January 2, 2013 That tells me you're getting idle air somewhere. else. Sure you got the throttle butterfly adjusted properly? Link to comment Share on other sites More sharing options...
last254 Posted January 2, 2013 Author Share Posted January 2, 2013 I'm pretty sure .it wasnt stopping the butterfly valve, it would just rub up on the throttle body... so i tightened it until i saw the faintest movement then stopped Link to comment Share on other sites More sharing options...
cruiser54 Posted January 2, 2013 Share Posted January 2, 2013 Well, you're getting air into the intake manifold from somewhere else then. Intake manifold bolts tight? EGR valve hanging open? Link to comment Share on other sites More sharing options...
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