EUREKA Posted January 30, 2022 Share Posted January 30, 2022 The part listed at NAPA ECH TS5018 was not correct. The thread size does not match. Mine is 1/2-18 and the TS5018 has a larger diameter threaded portion (I neglected to measure it before returning it). NAPA also lists TEM 207805 which looks similar but might be the correct part. It would take a week to get in stock. O'Reilly's said that their system suggest a part that interchanged with the ECH TS018, so it is probably not the right size either. Any advice? Link to comment Share on other sites More sharing options...
cruiser54 Posted January 30, 2022 Share Posted January 30, 2022 For the gauge? Link to comment Share on other sites More sharing options...
EUREKA Posted January 30, 2022 Author Share Posted January 30, 2022 No, my understanding is that the temp sensor in the cylinder head is for the gauge, this one is in the intake manifold. Link to comment Share on other sites More sharing options...
jdog Posted January 30, 2022 Share Posted January 30, 2022 The one in the intake is a air temp sensor, not coolant. No coolant runs thru the intake on the 4.0 Link to comment Share on other sites More sharing options...
EUREKA Posted January 30, 2022 Author Share Posted January 30, 2022 Well I understand no coolant runs through the intake. I just thought the part had a silly name. Link to comment Share on other sites More sharing options...
EUREKA Posted January 30, 2022 Author Share Posted January 30, 2022 So can you tell me where the parts l listed install? Or the correct part number? Link to comment Share on other sites More sharing options...
EUREKA Posted January 30, 2022 Author Share Posted January 30, 2022 When searching for parts, the only air temp sensor I find is the ambient air temp sensor. Link to comment Share on other sites More sharing options...
cruiser54 Posted January 30, 2022 Share Posted January 30, 2022 https://www.quadratec.com/products/55121_00.htm Link to comment Share on other sites More sharing options...
EUREKA Posted January 30, 2022 Author Share Posted January 30, 2022 14 minutes ago, cruiser54 said: https://www.quadratec.com/products/55121_00.htm That is for 91 and later. This is on my 88. Link to comment Share on other sites More sharing options...
cruiser54 Posted January 30, 2022 Share Posted January 30, 2022 Oh, okay. Why do you feel you need a new IAT for your Renix? Link to comment Share on other sites More sharing options...
EUREKA Posted January 30, 2022 Author Share Posted January 30, 2022 It began with a misunderstanding. I ordered sending units for my coolant temp (gauge) and oil pressure from NAPA for a full cluster upgrade. When I showed up to get the parts they had included this in my order for some reason. I figured for $30 I'd go ahead and replace it even though I had no reason to suspect it was bad. Classic mistake. Next rookie mistake was cutting the wires so that I could use a socket insted of wrench to remove it. I am pretty new to renix and do not know how the ECU uses or does not use info from this sensor. Perhaps it is not really needed other than to plug the hole in the intake? I am not finding it when searching for "intake air temperature sensor". Link to comment Share on other sites More sharing options...
eaglescout526 Posted January 30, 2022 Share Posted January 30, 2022 You can’t find those new anymore. Someone at some point found another style but has a different plug that you’ll have to swap out. I’d have to find the post. I have an IAT laying around that came from one of the 2.5L manifolds I have. Link to comment Share on other sites More sharing options...
Ωhm Posted January 30, 2022 Share Posted January 30, 2022 7 minutes ago, EUREKA said: I am not finding it when searching for "intake air temperature sensor" Jeep_Renix_Fuel_Injection_manual.pdf Link to comment Share on other sites More sharing options...
EUREKA Posted January 30, 2022 Author Share Posted January 30, 2022 19 minutes ago, Ωhm said: Jeep_Renix_Fuel_Injection_manual.pdf 1.43 MB · 102 downloads I see that its called "manifold temperature sensor" in that document. Thanks. Of course now I know that I won't find it by any name. Link to comment Share on other sites More sharing options...
EUREKA Posted January 30, 2022 Author Share Posted January 30, 2022 24 minutes ago, eaglescout526 said: You can’t find those new anymore. Someone at some point found another style but has a different plug that you’ll have to swap out. I’d have to find the post. I have an IAT laying around that came from one of the 2.5L manifolds I have. Of course. I'll solder and heat shrink the connector back onto mine. Link to comment Share on other sites More sharing options...
EUREKA Posted January 30, 2022 Author Share Posted January 30, 2022 One remaining point of confusion, what are the sensors listed by NAPA for? They look VERY similar. Link to comment Share on other sites More sharing options...
Ωhm Posted January 30, 2022 Share Posted January 30, 2022 Coolant Temperature Sensor. Link to comment Share on other sites More sharing options...
EUREKA Posted January 30, 2022 Author Share Posted January 30, 2022 10 minutes ago, Ωhm said: Coolant Temperature Sensor. Where is it on the engine? I only see the little one that feeds the gauge on the cylinder head. Link to comment Share on other sites More sharing options...
Ωhm Posted January 30, 2022 Share Posted January 30, 2022 CTS location 4_0.pdf Link to comment Share on other sites More sharing options...
EUREKA Posted January 30, 2022 Author Share Posted January 30, 2022 1 minute ago, Ωhm said: CTS location 4_0.pdf 602.7 kB · 1 download Thank you Link to comment Share on other sites More sharing options...
cruiser54 Posted January 30, 2022 Share Posted January 30, 2022 coolant temp SENSOR is low on the engine block driver's side. Gauge SENDER is on the head at the rear driver's side. Link to comment Share on other sites More sharing options...
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