1989 chevy 1ton 454

asphaltguy · 01-16-2009, 07:08 PM

need help i have a 1989 chevy 454 1ton the evertime i put it in 4x4 it sounds like it was engaged but wasnt..sooo i started checking traced the wires down found the wires burned were the go down from the from the relay to the aculator to the front axel i put on wires on put new switch from the wire to the aculaor to the senser on the tranny its a to prong has a ball on back but not getting any power from there at all so i ran i hot wire with a toggle switch to the aculater that engages the 4x4 it worked butttttttt when i start to drive it it seems to be locking up? cant get over 5 miles an hour but runs fine when it disengaes any other reason i aint getting any power from the tranny to the front axel?

Kennyray · 01-17-2009, 04:44 AM

there is a switch on the top of the trans fer case that engages the front axle when 4x4 is selected. i assume that you have a munually shifted transfer case.

leolkfrm · 01-17-2009, 04:59 AM

Are you pulling it towards the seat for 4WD/H? The switch will work and the 4wd indicator light should light, is that happening?

asphaltguy · 01-17-2009, 07:18 AM

yeah the indicator ight lights up and i did have itr in 4h when driving? there another wire on the front axel does it have anything to do with it?

leolkfrm · 01-17-2009, 07:27 AM

That should be the return for the light activation, when you had the actuator out did you check the movement of the lever inside the axle, if you push it in the light should light, and turning the wheel should rotate the driveshaft. what is happening when you say it won't go over 5mph? high rpm? can you feel the tranny shift? I asked about the lever position in case someone messed with it

asphaltguy · 01-21-2009, 04:01 AM

it sounds like its dragging the wheels ok and another thing i noticed is that when i do put it in to 4wd for that short timewhen i park the truck the next morning there was a big pile of tranny fluid under it like some thing was putiing out to much pressure sounds dumb huh? i have different size tires on the front is that i big big deal or not? np high rpm

Kennyray · 01-21-2009, 04:34 AM

That is very big deal, you could grenade the tranfercase that way.

asphaltguy · 01-21-2009, 04:37 AM

ok ill change the tires today and try it would that make it drag?

Kennyray · 01-21-2009, 04:39 AM

yea, your front wheels would be turning at a different speed from the back.

asphaltguy · 01-21-2009, 04:41 AM

got ya and thats why the spill of tranny fluid only comes out when its in 4x4 right

01-16-2009, 07:08 PM	#1
asphaltguy Full Member Join Date: Jan 2009 Location: ohio Posts: 20	1989 chevy 1ton 454 need help i have a 1989 chevy 454 1ton the evertime i put it in 4x4 it sounds like it was engaged but wasnt..sooo i started checking traced the wires down found the wires burned were the go down from the from the relay to the aculator to the front axel i put on wires on put new switch from the wire to the aculaor to the senser on the tranny its a to prong has a ball on back but not getting any power from there at all so i ran i hot wire with a toggle switch to the aculater that engages the 4x4 it worked butttttttt when i start to drive it it seems to be locking up? cant get over 5 miles an hour but runs fine when it disengaes any other reason i aint getting any power from the tranny to the front axel?

01-17-2009, 04:59 AM	#3
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,913	Are you pulling it towards the seat for 4WD/H? The switch will work and the 4wd indicator light should light, is that happening? __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

01-17-2009, 07:18 AM	#4
asphaltguy Full Member Join Date: Jan 2009 Location: ohio Posts: 20	1989 454 yeah the indicator ight lights up and i did have itr in 4h when driving? there another wire on the front axel does it have anything to do with it?

01-17-2009, 07:27 AM	#5
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,913	That should be the return for the light activation, when you had the actuator out did you check the movement of the lever inside the axle, if you push it in the light should light, and turning the wheel should rotate the driveshaft. what is happening when you say it won't go over 5mph? high rpm? can you feel the tranny shift? I asked about the lever position in case someone messed with it __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

01-21-2009, 04:37 AM	#8
asphaltguy Full Member Join Date: Jan 2009 Location: ohio Posts: 20	thanks ok ill change the tires today and try it would that make it drag?

01-17-2009, 04:44 AM	#2
Kennyray Senior Member Join Date: Oct 2005 Location: Birmingham, AL Posts: 895	there is a switch on the top of the trans fer case that engages the front axle when 4x4 is selected. i assume that you have a munually shifted transfer case.

01-21-2009, 04:01 AM	#6
asphaltguy Full Member Join Date: Jan 2009 Location: ohio Posts: 20	it sounds like its dragging the wheels ok and another thing i noticed is that when i do put it in to 4wd for that short timewhen i park the truck the next morning there was a big pile of tranny fluid under it like some thing was putiing out to much pressure sounds dumb huh? i have different size tires on the front is that i big big deal or not? np high rpm

01-21-2009, 04:34 AM	#7
Kennyray Senior Member Join Date: Oct 2005 Location: Birmingham, AL Posts: 895	That is very big deal, you could grenade the tranfercase that way.

01-21-2009, 04:39 AM	#9
Kennyray Senior Member Join Date: Oct 2005 Location: Birmingham, AL Posts: 895	yea, your front wheels would be turning at a different speed from the back.

01-21-2009, 04:41 AM	#10
asphaltguy Full Member Join Date: Jan 2009 Location: ohio Posts: 20	thanks got ya and thats why the spill of tranny fluid only comes out when its in 4x4 right

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