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We recently replaced the tranny & transfer case in a 94 ...
Sent to Car Experts October 17 11:56 AM

We recently replaced the tranny & transfer case in a 94 Blazer. When put in 4 wheel the front tires lock up but do not rotate. The front drive shaft does turn. Any suggestions?

Customer (name blocked for privacy)
Status:  Closed   Value: $5
Answer
October 17 12:01 PM (4 minutes and 55 seconds later)
         
REPLIEDCheck Mark
theres a vacuum servo under the battery does it have vacuum to it and is it pumming the cable ?
Dan -- Auto Service Technician -- 97% Positive Feedback on 159 Car Accepts
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October 17 12:09 PM (7 minutes and 45 seconds later)
         
Reply to Dan's Post: That is not the problem. The vaccuum system seems to be in good shape.
Customer (name blocked for privacy)
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October 17 12:11 PM (2 minutes and 13 seconds later)
         
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Dan -- Auto Service Technician -- 97% Positive Feedback on 159 Car Accepts
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October 17 12:14 PM (2 minutes and 58 seconds later)
         
as stated, the electronics seem to be working as the front wheels lock up when put into 4 wheel. The vaccuum servo is pulling the cable when engaged, and the front drive shaft will then spin. Only the front tires at that point will not move at all.
Customer (name blocked for privacy)
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October 17 12:19 PM (5 minutes and 34 seconds later)
         
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Dan -- Auto Service Technician -- 97% Positive Feedback on 159 Car Accepts
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October 17 12:23 PM (3 minutes and 47 seconds later)
         
They probably would slide except the vehicle is still up on jack stands since we just finished installing the tranny and transfer case about 2am today. The tranny and transfer were removed from the same exact vehicle that was recently burned out, but nothing on the system was hot. The fire was on the top end and inside the vehicle only. Both were in good working condition.
Customer (name blocked for privacy)
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October 17 12:38 PM (14 minutes and 52 seconds later)
         
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Dan -- Auto Service Technician -- 97% Positive Feedback on 159 Car Accepts
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October 17 12:41 PM (3 minutes and 17 seconds later)
         
The whole vehicle is suspended on jack stands, hence all 4 wheels are off the ground.
Customer (name blocked for privacy)
Answer
October 17 12:44 PM (2 minutes and 57 seconds later)
         
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Dan -- Auto Service Technician -- 97% Positive Feedback on 159 Car Accepts
master tech
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October 17 1:40 PM (55 minutes and 56 seconds later)
         
When the electronic transfer is not engaged, the front wheels will freely spin. If the front differential was in fact broken, I do not believe that in or out of 4 wheel would create this same senario. Instead, I would sooner think that if the differential was in fact not working at all, the front wheels would spin regardless if the transfer case was engaged or not, hence making it a full time 2 wheel drive, the same as my 91 Explorer, which has a non-working 4 wheel drive system.
Customer (name blocked for privacy)
Answer
October 17 1:47 PM (6 minutes and 29 seconds later)
         
REPLIEDCheck Mark

OK SO THE FRONT DRIVE SHAFT ISNT SPINNING WITH THE REAR WHEELS? THIS AND A FORD EXPLORER USE A DIFFERENT SYSTEM THIS ONE NOT AN ELESTRONIC TRANSFERCASE IT DOES USE ELECTRONICALLY SHIFT MOTOR WHEN YOU PUT IT IN 4 WD 2 WD 4 LO IT MOVES LINKAGE IN THE TRANSFER CASE JUST AS THE OLD LINKAGE WOULD

WHEN YOU PUT IT IN 4 WD THE GREEN LIGHT ON THE SWITCH DOES IT BLINK FOR APPROX 10 SECONDS THEN STAY ON? OR DOES IT GO OUT THE WAY I UNDERSTAND IT IS THEN IN 4X4 THE FRONT TIRES WILL NOT TURN WITH OR WITHOUT THE REAR WHEELS IN NEUTRAL OR DRIVE SO THEY ARE PHYSICALLY LOCKED BUT THE FRONT DRIVE SHAFT TURNS AND THE TIRES LOCKED ???

Dan -- Auto Service Technician -- 97% Positive Feedback on 159 Car Accepts
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October 17 3:23 PM (1 hour and 36 minutes and 5 seconds later)
         
Reply to Dan's Post: Yes the light does blink for about 10 seconds. I see you have gone offline, so maybe we can continue this at another date. Thnks for the help so far Dan....Dave
Customer (name blocked for privacy)
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