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The vacuum lines on a 1987 Chevy S10 Blazer are responsible for routing vacuum to various components such as the brake booster, EGR valve, and other systems.
A vacuum line diagram for your specific make and model of Chevy S10 Blazer can be found in the vehicle's service manual or in some cases, it can be found under the hood on a decal or sticker.
If the vacuum lines are loose, cracked, or damaged, it can cause various issues such as rough idle, stalling, poor performance, or even a failed emissions test.
It's best to consult the service manual, a professional mechanic or the dealer for proper diagnosis and repair of vacuum lines issues. These lines are crucial for the proper operation of many systems in the vehicle, so it's important to fix them as soon as possible if they are found to be damaged.
From what I have read elsewhere: There is an overflow hose on top of transmission behind engine which actually is from the transfer case. Fluid will drip down onto exhaust and eventually catch on fire. Check transfer case for being overfull by taking the top fill plug out. If transmission fluid runs out, I believe the transfer case input shaft seal is shot and needs replaced. Mine caught on fire. I was lucky to get fire out before truck burnt to the ground. If you continue to drive vehicle at have something to put out a fire!!!!
The thermostat is under the fitting with the upper radiator hose on. Remove the 2 bolts replace the thermostat, add coolant. Allow the engine to heat up with the radiator cap installed on the lock position not fully tightened. The air in the system will purge out into the reservoir. Fill the reservoir to the hot line when fully heated and no air is coming out anymore.
It's possible that your transmission and filter has built-up a lot of gunk and deposits and is working overtime to get fluid to circulate through the transmission. The only other thing that can normally be checked without taking the vehicle to a transmission expert is the fluid level. However, I can tell you that I own a 2002 Blazer with a 4.3 L Vortec, and Blazers have always been notorious for having the transmissions go out on them if they are not checked and flushed on a routine basis (I suggest checking and/or flushing every 10-15K miles.). Hopefully this will help to shed some light on your problem. Have a great day!
Yes it screws in on right side of tramission and you will need a 7/8 inch deep socket to remove it. You may be able to clean the old one once it is removed. There is a little ball thatgets dirty and may you can get by with cleaning it. Good Luck. Ed
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