mt01

What are these sensors and connectors, and where do they go?

20160212_210924 by bubbacfcs, on Flickr

Guess I should have taken more pictures when I tore my old engine apart. I did not expect there to be so different sensors with identical electrical connectors.

crowz

1 should be the temp gauge sender

3 MAY be the oil temp sensor its hard to tell at that angle or the manifold temp sensor. Again angle is bad.

4 coolant hose from the front of the tpi intake ?

5 is the aux fan switch

6 is the oil pressure sensor and oil pressure switch(fuel pump).

7 coolant hose?

Are any of these pulled from the intake? or just from the block?

xrav22

And 5 is aux fan switch on an 85 between 6&6 cyl
No. 3 looks like IAC temp connector in bottom of intake

Cliff Harris

1 - coolant temperature sensor for the dash gauge (goes between spark plugs #6 and #8 on 1986 and later, between spark plugs #1 and #3 on '84 & '85)

2 - oil temperature sensor (goes above oil filter on the side of the block)

3 - cold start thermo switch for cold start injector (goes into the front of the intake manifold)

5 - auxiliary fan switch (goes between spark plugs #1 and #3 on '86 and later, between #6 and #8 on earlier cars)

6 - oil pressure sensor for dash gauge and oil pressure switch for fuel pump (goes in the oil gallery tap on the rear of the block)

4 & 7 look like coolant hose couplers (#4 would go in the front of the intake manifold and connect to the throttle body). I don't recognize #7. Must be for a later year car than I have...

Joe C

#7 looks to be the connector(nipple) for the PCV hose into the LH side of the intake manifold. the rest as Cliff says -

WVZR-1

I'm with Cliff and Joe here but maybe you're missing one or more if the snapshot was to have been an "all inclusive". You've got those identified I guess.

**Maybe just maybe #4 could be for the oil filter adapter to block coolant passage, in your other snapshots you have a fitting in the front of the intake already with the engine on the ground. Since you seem to have the AUX fan and an '86 the "pair" cooler/fan would have been very likely.

Did you have the oil filter coolant adapter on the L98?

mt01

Here's another angle on #3, and also two more sensors that I need to identify.

20160213_104308 by bubbacfcs, on Flickr

xrav22

I thought no.3 was the IAC because of the 2 prong connector, but now I believe 8 or 9 to be IAC and I think they are interchangeable anyways(same as coolant temp sensors)

WVZR-1

These, #8 and #9 are MAT and CTS, they're the same part # so location of use is not important. CTS - front of intake, MAT - under intake. They're the couple I suspected you hadn't included in the original snapshot.

VikingTrad3r

joe is right here. it threads into the intake between the front and rear runners on driver side, on the windshield side of the 9th injector if u have one.