AnotherOldJeepGuy Posted February 17 Share Posted February 17 1 hour ago, 89 MJ said: How do all of your connectors for various sensors look? Any chance you’re losing connection somewhere? They all look connected and I don't see any that look damaged. But maybe I'll disconnect and reconnect them just to see if anything changes. Back when Radio Shack existed they sold a contact cleaner spray that worked wonders on TV and CB tuners, wish I had a can of that stuff to clean the connections as well. Link to comment Share on other sites More sharing options...
GonzoTheGreat Posted February 17 Share Posted February 17 Contact cleaner is still readily available at most hardware stores and should be used on any connector that doesn’t look new inside. also, did you verify that all those bolts on the bottom of the exhaust manifold are tight? Or just that they exist? Link to comment Share on other sites More sharing options...
89 MJ Posted February 18 Share Posted February 18 50 minutes ago, AnotherOldJeepGuy said: They all look connected and I don't see any that look damaged. But maybe I'll disconnect and reconnect them just to see if anything changes. Back when Radio Shack existed they sold a contact cleaner spray that worked wonders on TV and CB tuners, wish I had a can of that stuff to clean the connections as well. I have my doubts it will fix it, but we can hope so! Link to comment Share on other sites More sharing options...
AnotherOldJeepGuy Posted February 18 Share Posted February 18 4 hours ago, GonzoTheGreat said: Contact cleaner is still readily available at most hardware stores and should be used on any connector that doesn’t look new inside. also, did you verify that all those bolts on the bottom of the exhaust manifold are tight? Or just that they exist? I was able to visually verify they exist and don't look loose. Trying to get to them is still on the list but so far I have not been able to get to them with a wrench.. can't see them from the top to aim the wrench, and so far I can't reach them from underneath! So since for the other areas the water test was very effective in locating leaks on that end, and also in showing afterwards that tightening closed the leaks at those points, I am for the moment assuming that since the water test from below doesn't show any leaks (ie rpm does not change when sprayed), they are no leaks there. I know that is not the same as being 100% sure with a wrench, but it seems to be good evidence that they are not leaking based on how well it worked in other locations. Does that seem logical? Link to comment Share on other sites More sharing options...
pizzaman09 Posted February 19 Share Posted February 19 On 2/17/2025 at 6:42 PM, AnotherOldJeepGuy said: They all look connected and I don't see any that look damaged. But maybe I'll disconnect and reconnect them just to see if anything changes. Back when Radio Shack existed they sold a contact cleaner spray that worked wonders on TV and CB tuners, wish I had a can of that stuff to clean the connections as well. I think the product you are looking for is named DeoxIT. There are a couple of different varieties so you may want to do a bit of research. Link to comment Share on other sites More sharing options...
AnotherOldJeepGuy Posted February 19 Share Posted February 19 Will do. I did stop at ACE HW today and they said they do normally carry something with the name contact cleaner, but were out of stock. We are in for a deep freeze here in North Texas for the next few days, so the search will resume after it warms up a bit. Link to comment Share on other sites More sharing options...
AnotherOldJeepGuy Posted February 19 Share Posted February 19 DeoxIT seems to have lots of good reviews. Also ran across CRC 05103 QD Electronic Cleaner that also has good reviews. Both claim to dry quickly without leaving residue and will not harm plastics. So will probably get one or the other and give it a try. Link to comment Share on other sites More sharing options...
AnotherOldJeepGuy Posted February 25 Share Posted February 25 I managed to contort myself enough to get to the last 4 bolts on the underside of my manifold, none were loose. Kinda makes sense since the water test from underneath didn't indicate any gap. So good news bad news. My bolts are tight, my truck still stalls . I am about ready to glue a dime on the throttle at the throttle body stop, so it can't get to the bottom, since that's where it stalls! A bit like how I "fixed" my pass window so that it could not be fully lowered to the point it would not roll back up, with a 2x4 in the door limiting how far down it would go.... Link to comment Share on other sites More sharing options...
Eagle_SX4 Posted February 25 Share Posted February 25 1 hour ago, AnotherOldJeepGuy said: I am about ready to glue a dime on the throttle at the throttle body stop, so it can't get to the bottom, since that's where it stalls! It may be that your IAC (idle air control) valve is stuck fully extended. Have you removed and cleaned it? Cruiser did a good write up on how to. Link to comment Share on other sites More sharing options...
AnotherOldJeepGuy Posted February 25 Share Posted February 25 I have not messed with that piece of the puzzle yet. I'll look over the post you provided and see how that goes. Link to comment Share on other sites More sharing options...
AnotherOldJeepGuy Posted February 25 Share Posted February 25 (edited) I have now messed with the IAC and the verdict is.... I also cleaned what I could without removing the TB. When I do the next tuneup I'll probably remove and clean that too. Thanks to all for the assists over the last couple months or so stepping through this (so far)! Edited February 26 by AnotherOldJeepGuy typo, later added "so far" when failure came back :( Link to comment Share on other sites More sharing options...
AnotherOldJeepGuy Posted February 26 Share Posted February 26 Success was short lived. While I was able to rev up in the garage and let off and not stall, as soon as I went somewhere, the stall came right back. Link to comment Share on other sites More sharing options...
AnotherOldJeepGuy Posted February 26 Share Posted February 26 I originally tagged on to this post by BlueDove91, "Intermittent Stalling/Dying While Otherwise Driving Fine...Restarts, Drives, Randomly Dies Again" because of similarity. This was 1/6/25. I had no expectation how long my "tag on" would last! Over time I think my issue has diverged enough that, in hindsight, it should have probably been it's own thread. Too late to start this issue 1/6/25, but I think I should re-title, summarize, and move forward with a more appropriate title. So I will with this post, and with the new title "Stalls At Rapid RPM Decrease, Foot-Off Accelerator, Otherwise Runs Fine". Please follow the saga from that link going forward.... Link to comment Share on other sites More sharing options...
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