Charlie Posted March 10, 2016 Share Posted March 10, 2016 l pulled the engine out and sent it to Oregon engine rebuilders they bored the cylinders 0.30,mains 0.20,rods 0.20 replaced two of the rods three of the valves and put a RV cam in it I put a new oil pump in and reassembled the motor with new water pump, thermostat, radiator, all new hoses, new valve cover ( plastic just doesn't work very well for a valve cover ) I've replaced the oxygen sensor,water temp sender, oil pressure sender, ISA, CPS, MAP, MAT, the EGR valve seems to be working but the EGR valve solenoid doesn't seem to be working it has vacuum to it and no vacuum coming out witch I think is right but when I unplug the switch I think it should have vacuum going to the EGR valve but there is no change I want to replace it but I can't find the part any were jeep part number is 53002483 by chance is it a GM part I would like to make sure the EGR is working properly some people think I should just by pass it but I believe it will cause more problems down the road because it's tied into the gas evaporative canister MAP sensor ECU and it helps lower height cylinder temps it's running really good it's like getting a brand new truck any help finding a EGR valve solenoid would be greatly appreciated I also have a 88 Comanche with 4.0 a 88 Cherokee limited with the 4.0 and a CJ5 with the 304 I've done a lot of work on the CJ5 it's a lot of fun to drive all are drivers also in the stable is a 06 chev with the duramax and a 06 dodge with the Cummings and only 29,000 miles on it I don't seem to have enough time to drive them all plus l have a 84 chev 3/4 ton suburban with just under 40,000 miles on it l haven't started it in the last ten years I want to get started on it pretty soon it looks like I have a four wheel drive used car lot but I get a lot of satisfaction working on them . Quote Link to comment Share on other sites More sharing options...
Administrators Moses Ludel Posted March 10, 2016 Administrators Share Posted March 10, 2016 Hi, Charlie...I answered the part number question but apparently you need an EGR valve solenoid and not the EGR valve?Here's the response earlier, please clarify if you need this information or info on the EGR valve solenoid:"Hi, Charlie...Your Mopar part number is for the actual EGR valve, which has been discontinued by Mopar. I did some searching and found the current Airtex cross-over item. Best price was at Amazon: http://www.amazon.com/Airtex-4F1405-Exhaust-Recirculation-Valve/dp/B000C1I3GAThis is for the 2.5L Jeep 1986-90 TBI engine. See if this is what you need...We'll go from there."I'd be happy to chase down the EGR valve solenoid part number and find a crossover if available...Please update after looking at the parts link to Amazon...Moses Quote Link to comment Share on other sites More sharing options...
Administrators Moses Ludel Posted March 10, 2016 Administrators Share Posted March 10, 2016 Charlie...I took the initiative to look up the switch. I believe you want the Vacuum Switch Solenoid, Mopar Part #33002298. It's a live number, here is one source, there are many. Try Amazon for a crossover: http://www.moparpartdepot.com/p/Jeep__/EGR-Valve-Control-Solenoid-SOLENOID-Switch-Vacuum-solenoid-Vacuum-switch-Vapor-Canister-Purge-Solenoid/48233720/33002298.htmlTrust this helps, let me know...I'm curious about your "fleet" of low-mileage vehicles. The '84 Suburban 4x4 3/4-ton and the 2006 Cummins Ram in particular! When you have time, we'll discuss them...The 2.5L Comanche for now!Moses Quote Link to comment Share on other sites More sharing options...
Charlie Posted March 12, 2016 Author Share Posted March 12, 2016 Thanks Moses, Egr vacuum switch solenoid that's the part I am looking for I really appreciate the help Quote Link to comment Share on other sites More sharing options...
Administrators Moses Ludel Posted March 12, 2016 Administrators Share Posted March 12, 2016 Your Comanche is very cool, Charlie! Glad you can get the part you need...How does the truck perform with the 2.5L TBI inline four engine? Moses Quote Link to comment Share on other sites More sharing options...
Charlie Posted March 19, 2016 Author Share Posted March 19, 2016 The new engine is running really good the machine shop ( Oregon Engine Rebuilders ) replaced three valves,two connecting rods , bored 0.30 over , mains 0.20 , rods 0.20 and put a RV cam in , the cam gives it a little more on the top end it came stock with 4.10 gears so I put 31" tires under it and that helps keep the rpm's down on the highway I'm still breaking the engine in l only have 400 miles on the new engine I'm running rotella 15w-40 diesel motor oil for the break in I'll run it for another 100 miles then do the first oil change its a lot of money and work for a 2.5 liter but it's a blast to bomb around in plus since it's a 1988 no more D.E.Q. We use it for a daily driver I'm getting ready to rebuild the front axle I've already put new hubs , rotors, calipers and brake hoses new ball joints on the right side new track bar new drag bar new tie rod ends new sway bar bushing and sway bar links and bushings new rebuilt manual steering box ( Red Head in Seattle WA. ) with a good 4 wheel Alignment so it drives really nice lm thinking about changing to the one peace axles and do away with the vacuum fork shifter I haven't decided if I'm going to stay with the 27 spline or go to the larger ones with a ARB locker I've got two 88 Comanches and the other one has the 4.0 liter I want to build one for off roading and one for bombing around town I just need to decide witch one to build for off roading any imput will be greatly appreciated. Quote Link to comment Share on other sites More sharing options...
Charlie Posted March 19, 2016 Author Share Posted March 19, 2016 The other Comanche Quote Link to comment Share on other sites More sharing options...
Charlie Posted March 19, 2016 Author Share Posted March 19, 2016 Part of the fleet Quote Link to comment Share on other sites More sharing options...
Administrators Moses Ludel Posted March 28, 2016 Administrators Share Posted March 28, 2016 Nice fleet, Charlie! Each vehicle has its niche. I'd like to know the camshaft grind for your 2.5L TBI build and how you like it. The engine looks fitting for a Jeep Comanche pickup. I did a one-piece right front axle shaft changeover on my son-in-law's '87 YJ Wrangler to eliminate the axle disconnect and went with 30-spline (inner) shafts and an ARB Air Locker at the same time. Dana 35 rear axle got the same treatment. All works nicely ten years later... The 4.0L Renix MPI six would work well all around, the 2.5L TBI is fine off-pavement in low range...Your call! Moses Quote Link to comment Share on other sites More sharing options...
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