jmderyke Posted December 3, 2009 Share Posted December 3, 2009 my jeep uses a crankshaft position sensor located drivers side bell housing. It locates crank position off of the flywheel teeth. its that way for my 86 maybe the same for yours, fyi your truck wouldnt run if this sensor failed Link to comment Share on other sites More sharing options...
Shandley Posted December 3, 2009 Author Share Posted December 3, 2009 My crankshaft position sensor is A-OK. So, you DON'T have a CAMSHAFT position sensor mounted into your distributor? A good way to tell is that you see no wires aside from your ignition wires coming out of the cap, most likely on the bottom of the cap. Link to comment Share on other sites More sharing options...
jmderyke Posted December 3, 2009 Share Posted December 3, 2009 no, i only have the coil wire going into the cap and 4 spark plug wires coming out. On mine its handled at the coil and ecu Link to comment Share on other sites More sharing options...
Shandley Posted December 3, 2009 Author Share Posted December 3, 2009 Hmmm... Any clue what this is? Pardon the quality of the pic, especially around the... sensor?... There appears to be one green wire coming out of it. I wish I was at my truck right now so I could get a better look and a better picture. To get your bearings, this is just to the right of the distributor when looking at the right side of the engine block. The white thing in the lower left is my oil filter. Link to comment Share on other sites More sharing options...
jmderyke Posted December 3, 2009 Share Posted December 3, 2009 oil pressure sensor Link to comment Share on other sites More sharing options...
190ematt Posted December 14, 2009 Share Posted December 14, 2009 i have the same exact prob with the comanche i just put a motor in, in that vid u posted mine runs exactly the same. when i plugged in the o2 from the new old motor wich i didnt install til recently it cleared up for bout 5 seconds, I'm thinking bout getin a new 02 tommorow. th reason i just pluggeg in an 02 is cause somone who helped me align the driverside engine mount he broke the o2 with a prybar. so i just got around to swappin the o2s. when i swapped motors i used the intake and exhaust from my orig motor due to evap routing and conections, ive also replaced the coolant temp sens. but a badly gapped spark plug played a big role in it alond with cylin 1&3 ign wires being crossed . but after all that it still runs like your vid, Link to comment Share on other sites More sharing options...
Shandley Posted December 14, 2009 Author Share Posted December 14, 2009 What does the exhaust smell like? Mine was very smokey (couldn't tell out of the pipe but in the underground parking, it filled the place with a blue hue within 3 min of running. I would highly suggest replacing or try cleaning the EGR valve or at least make sure all of the vacuum hoses are correct. Mine was like night and day after I did that. My O2 sensor came in yesterday along with new wires. I will be putting them on tonight. I know my TPS is shot and I have one coming in. Mine does run much better but it was running perfect after I cleaned the EGR and made sure it held a vacuum. It ran like new. I suspect the carb cleaner I had in the valve ate away at the light oil I put on the shaft and it's getting stuck. We'll see I guess. I'm just glad this is a project vehicle and not my daily driver. Link to comment Share on other sites More sharing options...
190ematt Posted December 15, 2009 Share Posted December 15, 2009 well its puffing what looks like black smoke. i work in a shop so i opend the bay door. but befor i replaed the motor i had an egr prob but it was mor of an eraticly loping idle. and i broke 2 evap hoses in the process of the swap. 1 went to the tb and the other 1 went to the tb boot . they are hard plastic lines so they break easy I'm wondering if this could cause this, I'm going to the dealership tommorow to try and get those two lines. so tomorow il replace those lines. Link to comment Share on other sites More sharing options...
190ematt Posted December 17, 2009 Share Posted December 17, 2009 i just replace my tps and map sensor air line and an egr air line and it runs like new. i hooked it up to a solus pro scanner and ssaw no signal from tps, and i checked the conection and the tps was getting 5 volts but no power to the reference wire that goes to pcm. the reason i know mine was bad was the fuel line at the the tb directly above it had been leaking onto it. btw i need to fix that to but otherwise it runs great. Link to comment Share on other sites More sharing options...
n4ter Posted February 16, 2016 Share Posted February 16, 2016 My 1989 Comanche is having the same problems and i tried everything here and if anything it has gotten worse. So if anyone would have a solution that would be great. The engine is a 2.5l as well. Link to comment Share on other sites More sharing options...
Shandley Posted July 15, 2017 Author Share Posted July 15, 2017 Well, it's been a fun ride.... and the ride continues! She was parked for... wow 8 years but she's home now! Time to get dirty again! With a new born and a wedding to plan, I'm going to be a bit spacey on updates but I won't leave it for 8 years again. I believe I was going to replace the EGR valve next. :) Time to go shopping! Link to comment Share on other sites More sharing options...
Eagle Posted July 15, 2017 Share Posted July 15, 2017 Welcome back, Stranger. And congratulations on the newborn and the upcoming nuptials. We expect updates ... on the 'Manche, and the kiddo. Link to comment Share on other sites More sharing options...
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