MiNi Beast Posted May 30, 2008 Share Posted May 30, 2008 This is my 93 XJ 4.0 and she just cracked. I would like to know if it is weldable and abple to do it with it still in the veheicle? Just need a temp fix to keep it from stalling out everytime I come to a stop. Going to be getting a new header later. Link to comment Share on other sites More sharing options...
MiNi Beast Posted May 30, 2008 Author Share Posted May 30, 2008 mounts are fine. The crack most likely came when I tighten a bolt that was almost falling out on the flange. As far as the stalling I don't know. Thought this could be the problem with the fact I shortened up the exhaust and have only a cherry bomb on there. But drives fine down the road but then I depress the clutch pedal and brake and she bogs down and will stall if I don't feather the gas a little to maintain the rpm's. Link to comment Share on other sites More sharing options...
Pete M Posted May 30, 2008 Share Posted May 30, 2008 I've heard of people successfully welding up those types of cracks. And I've heard plenty of them complain that the headers just cracked again somewhere else. :( I'm not a welder though, so I personally can't say. Link to comment Share on other sites More sharing options...
jeepthing07 Posted May 30, 2008 Share Posted May 30, 2008 you can weld it... i did but a couple months later it cracked right beside the weld so its alot of work for nothing. check out the APN headers they are supposed to be really good and cheap! Link to comment Share on other sites More sharing options...
MiNi Beast Posted May 30, 2008 Author Share Posted May 30, 2008 Well I'm going to temp it with some J.B. Weld and see if that even cures my stalling issue. Link to comment Share on other sites More sharing options...
chicofuentes0224 Posted May 31, 2008 Share Posted May 31, 2008 Are yo sure the XJ is stalling because of the crack in your manifold. That sounds like the IAC is either bad or not connected. I only say that because my 96 VW gti did that when the IAC went south. Link to comment Share on other sites More sharing options...
MiNi Beast Posted May 31, 2008 Author Share Posted May 31, 2008 Are yo sure the XJ is stalling because of the crack in your manifold. That sounds like the IAC is either bad or not connected. I only say that because my 96 VW gti did that when the IAC went south. I don't why it is stalling, just found this looking for the problem. Which is new since the stalling started. Trying to narrow things down. Link to comment Share on other sites More sharing options...
chicofuentes0224 Posted May 31, 2008 Share Posted May 31, 2008 Are yo sure the XJ is stalling because of the crack in your manifold. That sounds like the IAC is either bad or not connected. I only say that because my 96 VW gti did that when the IAC went south. I don't why it is stalling, just found this looking for the problem. Which is new since the stalling started. Trying to narrow things down. Trying switching out IAC's Link to comment Share on other sites More sharing options...
MiNi Beast Posted May 31, 2008 Author Share Posted May 31, 2008 Are yo sure the XJ is stalling because of the crack in your manifold. That sounds like the IAC is either bad or not connected. I only say that because my 96 VW gti did that when the IAC went south. I don't why it is stalling, just found this looking for the problem. Which is new since the stalling started. Trying to narrow things down. Trying switching out IAC's This thing...or is this a TPS Link to comment Share on other sites More sharing options...
chicofuentes0224 Posted May 31, 2008 Share Posted May 31, 2008 Was it on the throttle body next to the TPS. If yes then yeah, that's probably it. Link to comment Share on other sites More sharing options...
Jeepman Posted May 31, 2008 Share Posted May 31, 2008 MiNi Beast That Pic is the TPS... And The Cracked manifold will not Cause stalling... You Can weld the maifold and You need to Weld The crack and then inbetween the Two Tubes so that they can not move independ of each other then the crack should not come back, But like said already it may crack somewhere else... I would Check the IAC like said As well as the MAP Sensor and all Vac Lines... Link to comment Share on other sites More sharing options...
chicofuentes0224 Posted May 31, 2008 Share Posted May 31, 2008 Oops, Rog I read your post wrong. That looks a little differnt than the one on my 88 but similar. Your TPS should be right next to it. If you have an automatic their should be two sets of wires coming out of the TPS. I think one set of wires for a manual. The IAC sits right next to my TPS on my throttle body and like I said looks similar to that. Link to comment Share on other sites More sharing options...
MiNi Beast Posted May 31, 2008 Author Share Posted May 31, 2008 Was it on the throttle body next to the TPS. If yes then yeah, that's probably it. Nope that is a TPS, it's an extra I have. Link to comment Share on other sites More sharing options...
chicofuentes0224 Posted May 31, 2008 Share Posted May 31, 2008 MiNi BeastThat Pic is the TPS... And The Cracked manifold will not Cause stalling... You Can weld the maifold and You need to Weld The crack and then inbetween the Two Tubes so that they can not move independ of each other then the crack should not come back, But like said already it may crack somewhere else... I would Check the IAC like said As well as the MAP Sensor and all Vac Lines... I don't think that's your TPS. Mine has the wires already attached to the TPS which then connect to the wiring harness. That looks like your IAC. Try switching one out from the junkyard or a friends XJ. If it fixes your problem buy a new one at your local parts store. Link to comment Share on other sites More sharing options...
chicofuentes0224 Posted May 31, 2008 Share Posted May 31, 2008 If it was your TPS it would have an arm that rotates on the back. Take a pic of the other side for us will ya? Link to comment Share on other sites More sharing options...
bryans87MJ Posted May 31, 2008 Share Posted May 31, 2008 Don't bother it will only crack again. I welded one up for a buddy and it lasted 2 months before it cracked in a new spot. Just get one of the e-bay ones with the flex areas in it for $120 and be done with it. Link to comment Share on other sites More sharing options...
MiNi Beast Posted May 31, 2008 Author Share Posted May 31, 2008 Link to comment Share on other sites More sharing options...
chicofuentes0224 Posted May 31, 2008 Share Posted May 31, 2008 Yup, I'm wrong. If you look at the picture that has the view from the top, your IAC is on the right. What you pulled is the TPS. Sorry bout that. It's differnt than mine. When you pull the IAC it will have like a little cone thing on the inside. Link to comment Share on other sites More sharing options...
MiNi Beast Posted May 31, 2008 Author Share Posted May 31, 2008 Yup, I'm wrong. If you look at the picture that has the view from the top, your IAC is on the right. What you pulled is the TPS. Sorry bout that. It's differnt than mine. When you pull the IAC it will have like a little cone thing on the inside. Is there another name for that? I can't find it for the price of it. Link to comment Share on other sites More sharing options...
jtdesigns Posted May 31, 2008 Share Posted May 31, 2008 Rock auto for around 40 to 60 bucks Idle Air Control Valve. not saying thats whats wrong though Link to comment Share on other sites More sharing options...
Jeepman Posted May 31, 2008 Share Posted May 31, 2008 The IAC is the Idle air Controller... Link to comment Share on other sites More sharing options...
jeepthing07 Posted May 31, 2008 Share Posted May 31, 2008 a cracked exhaust manifold CAN cause stalling.... its called vapor lock i had the same problem on my YJ thats what you get when you have a cracked exhaust manifold under your intake manifold and injectors it will be more noticeable on hot days too http://en.wikipedia.org/wiki/Vapour_lock Link to comment Share on other sites More sharing options...
mvusse Posted May 31, 2008 Share Posted May 31, 2008 An electric pump in the tank pushing the fuel, rather than a mechanical one pulling it, will effectively make a car immune to vapor lock. Link to comment Share on other sites More sharing options...
jtdesigns Posted May 31, 2008 Share Posted May 31, 2008 you think wrapping the intake with header wrap would help ? Link to comment Share on other sites More sharing options...
MiNi Beast Posted May 31, 2008 Author Share Posted May 31, 2008 maybe but between everybody the majority is saying the crack is not my issue but more so the IAC like jeepman suggested, so going to replace that or at least test it tomorrow. Link to comment Share on other sites More sharing options...
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