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97 B2300 Coolant Temp Sensor


rocky61201

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I've went thru 2 failed attempts at the local parts store (wrong thread size). Anybody know the correct part # and source for the coolant temp sender right next to the intake manifold on the back of the motor? (This is the 1 wire hook-up that supposedly sends the signal to the gauge on the dash. 1997 B2300
 


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RonD

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rocky61201

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Now you have me second guessing myself, lol. No plastic connector. This is the threaded stud push on 1 wire connector. I'm gonna work on it tomorrow so I'll take a pic and post it. FWIW it's on the cylinder head right next too the intake manifold runner so I assumed it was water temp. I'm aware of the two sensors on the water passage pipe at the front of the motor.

I recently pulled the motor and replaced all gaskets/timing belt, etc. and got the motor back in. The temp gauge never worked so I assumed it was a bad sender and I tossed it when I pulled the motor. Wish I hung on to it so I could have measured the thread size.
 

rocky61201

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OK, here is a pic. I took a better look at the hole this time. It is an oil passage and the wire is red with a white stripe. So i got a new oil pressure sensor and screwed right in. The ensuing story is how this started. It should make you laugh. This is my 19yo son's first car, 97 B2300 I picked up for $1,700 bucks.

#1 - he called me in the morning and truck is running really bad and won't maintain an idle. I told him to limp it home.
#2 - next day I pulled the codes and it was just the MAF sensor. By chance I pulled the dipstick and it was bone dry. WTF!!! Called it a day and went home.
#3 - That night my son and his friend (they act like Bill and Ted's excellent adventure when they are together) decided the motor is bad and they're gonna do a V8 swap!!! Proceeded to pull EVERYTHING off the motor and get ready to pull it.
#4 - I show up the next day and WTF???? Ok, deep breaths. We're at the point of no return so might as well pull the motor and pull the pan so I can check the bearings, rods, cylinders, etc. Everything looks good. Those LIMA motors can take a beating, lol.
#5 - OK retards start cleaning the engine bay and everything else so I can eat off it. I'll start ordering stuff and replace all gaskets, seals, timing belt, clutch, MAF sensor and the other usual stuff.
#6 - Fast forward two weeks and today we got everything back together and it fires up on the first pull.
#7 - About 2 seconds later I yell SHUT IT DOWN, SHUT IT DOWN!!!!. FORGOT TO PUT ON THE OIL FILTER!!! And now nothing is clean anymore, lol.

Called it a day. Went home and back at it tomorrow.
 

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RonD

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Jeeze, what a few days

Yes the oil switch/sender is in the head
temp sender is lower and in the block, looks like it has a hex plug in it blocking it off
 

rocky61201

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Jeeze, what a few days

Yes the oil switch/sender is in the head
temp sender is lower and in the block, looks like it has a hex plug in it blocking it off
Yea, there is a hex plug there. Gonna leave as is because I don't have a wire in that area to connect anything. The temp gauge never worked. So eventually I'll replace those sensors.
 


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