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Old 10-07-2010, 02:39 PM
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no temp

i did a swap from a 4.3 tbi to a 350 carb. first i put a temperture sensor for the 4.3 an in min it goe real hot i check the radiator with a thermo n it wasnt hot now i replace it with another one for that block n it doesnt read nothing til i turn it off the needle goes up to about a quater how can i fix this. still using factory gauges

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Old 10-07-2010, 04:27 PM
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Quote:
Originally Posted by weekend warrior
i did a swap from a 4.3 tbi to a 350 carb. first i put a temperture sensor for the 4.3 an in min it goe real hot i check the radiator with a thermo n it wasnt hot now i replace it with another one for that block n it doesnt read nothing til i turn it off the needle goes up to about a quater how can i fix this. still using factory gauges
If you still have the 4.3, take the sender from it and reuse it on the 5.7. Otherwise, a sender for the 4.3 certainly should work, providing there are no other issues w/the wiring- especially the grounds. BUT- the sender has to be the correct type. They are different depending on if the truck has a gage (like yours) or an idiot light. A sender for one type will not work right on the other type.

Be sure there are ground straps from the engine to the firewall and/or fender well (these often get missed on engine removal and are broken off, or aren't reattached after the new engine is in place. They ARE necessary), and from the battery negative to both the engine and chassis.
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Old 10-07-2010, 06:53 PM
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how many negatives should be on a 85 el camino
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Old 10-07-2010, 08:17 PM
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Originally Posted by weekend warrior
how many negatives should be on a 85 el camino
I don't know exactly. Look at the rear of the engine and at the firewall for either the whole ground strap, a strap that's been pulled in two, or a place that a ground strap would have been screwed on. Usually on the firewall there will be evidence of a star washer- it "digs in" to the metal to create a secure ground.

On the engine, the grounds will sometimes be attached to one of the holes on the back of the heads, to the transmission bellhousing bolt (often on the same bolt or stud that has the trans dip stick bracket), to the intake manifold- that sort of thing. You'll need to look closely to see what you have, or had.
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Old 10-07-2010, 09:07 PM
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i found two in the back n in the front by the bat. they are connected.now my oil sensor is also acting crazy but i think i got the wrong one is for light instea og a electrical gauge does this sound right n can the the temp sensor be the wrong one
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Old 10-07-2010, 09:43 PM
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Originally Posted by weekend warrior
now my oil sensor is also acting crazy but i think i got the wrong one is for light instea og a electrical gauge does this sound right n can the the temp sensor be the wrong one
Same as the other sender- unless the sender is for a gage and not a light, it won't work right. The sender has to match the gage or light.
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Old 10-07-2010, 09:58 PM
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so do i ask for my year my make or different cause the engine is different
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Old 10-07-2010, 10:04 PM
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Quote:
Originally Posted by weekend warrior
so do i ask for my year my make or different cause the engine is different
I would ask for the senders for the 4.3L V6 engine, with gauges, not idiot lights- that will give you what you need to run the V8 engine w/the existing gauges.

The only possible hiccough w/doing it this way would be if the threads were different, so take your old V8 senders along to check the new senders to.
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Old 10-07-2010, 10:06 PM
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thanks i think thats my problem
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