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Chevy Blazer Starting and Stalling Problems

326 messages,  Last post on Nov 27, 2009 at 10:50 AM

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What is this discussion about? Chevrolet Blazer, GMC Jimmy, SUV

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#305 of 326 1985 s 10 blazer by jeffh20man Oct 05, 2009 (12:42 pm)
I need to keep this truck running but every time it gets hot, it stalls out. Unless you have your foot on the gas and the idle high, it will stall out every time. Does not do it when its cold . I have had a new motor put in , rebuilt carb (for high altitude) new fuel pump and water pump. Truck should run great......does for about 10 minutes and then it stalls. Any suggestions Replies to this message: jlflemmons (Oct 05, 2009 3:08 pm)
#306 of 326 Re: 1985 s 10 blazer [jeffh20man] by jlflemmons Oct 05, 2009 (3:08 pm)
Replying to: jeffh20man (Oct 05, 2009 12:42 pm) New coil? You are describing a very typical coil failure, and I doubt the new engine came with one.
#307 of 326 1985 S10 BLAZER by jeffh20man Oct 06, 2009 (8:15 am)
Yes sir, we put new coil, plugs, wires, I am wondering about the EFE relay switch, mounting on the firewall, it was buzzing ??? so I ordered another switch, when it comes in I will install it. Thanks Replies to this message: jlflemmons (Oct 06, 2009 9:11 am) jeffh20man (Oct 06, 2009 9:35 am)
#308 of 326 Re: 1985 S10 BLAZER [jeffh20man] by jlflemmons Oct 06, 2009 (9:11 am)
Replying to: jeffh20man (Oct 06, 2009 8:15 am) Relays can fail in a number of ways. Check the voltage going to the coil of the relay. If it is below the rated voltage (typically 12VDC on a car) the coil cannot fully engage the relay contacts and you will get the buzzing you describe. Usually the coil just fails, but I have seen cases where some of the windings will short and also cause the "buzzing" sound. Replies to this message: jeffh20man (Oct 06, 2009 9:35 am)
#309 of 326 Re: 1985 S10 BLAZER [jlflemmons] by jeffh20man Oct 06, 2009 (9:35 am)
Replying to: jlflemmons (Oct 06, 2009 9:11 am) I will check that once the switch gets here. Thanks and I will let you know !
#310 of 326 1992 chevy 4.3 v6 won,t idle by zedd3111 Oct 24, 2009 (3:09 pm)
I have a 1992 chevy pickup with a 4.3 v6. When i crank it i have to throttle the gas to keep it running. If i unplug the map sensor it will run at a high idle. I have tested the map sensor and it tests fine, i have even replaced it but that didn't work. I have replaced the ECM, IAC,TPS,EGR valve, fuel filter. I have cleaned the throttle body. I have checked the vacuum lines, distributor, wires and plugs. The vacuum selinoid works fine and the spark control module works fine.I had a diagnostic tool run on it but no codes. I have ohmed out the wiring and found no breaks. Can anyone give me some ideas on what this problem can be? Please help!!! Replies to this message: marblaze (Oct 28, 2009 5:23 pm) tidester (Oct 28, 2009 9:19 pm)
#311 of 326 95 Blazer stalling by jerzyboarder Oct 25, 2009 (3:40 pm)
I have a 95 chevy blazer automatic with a 4.3 vortex. When I drive it the RPMs jump around and then it stalls out if I hit the brakes. Does anyone have any Ideas of what may be wrong?
#312 of 326 Re: 1992 chevy 4.3 v6 won,t idle [zedd3111] by marblaze Oct 28, 2009 (5:23 pm)
Replying to: zedd3111 (Oct 24, 2009 3:09 pm) I HAD A SIMILAR PROBLEM AS TO WHERE MY 4.3 WOULD IDLE HIGH THEN DROP TO ALMOST STALLING IT WAS MY THROTTLE POSITION SENSOR JUST A CHANCE . Replies to this message: tidester (Oct 28, 2009 9:19 pm)
#313 of 326 Re: blazer won't start [blondie16] by marblaze Oct 28, 2009 (5:31 pm)
Replying to: blondie16 (Aug 10, 2008 6:00 am) I JUST CHANGED MY FUEL PRESSURE REGULATOR TODAY IT IS MOUNTED ON THE BACK OF THE SPIDER JET , THE SPIDER JET IS UNDER THE PLENUM INTAKE WHICH IS MOUNTED ON TOP OF THE THE ALUMINUM INTAKE ITS A FAIRLY EASY JOB JUST REMEMBER THE PLENUM INTAKE IS PLASTIC WHEN YOU START TO TIGHTEN YOUR BOLTS BACK DOWN IF YOU NEED ANY HELP FEEL FREE TO ASK ME I JUST DID THIS JOB TODAY IT IS TIME CONSUMING DUE TO ALOT OF THINGS TO REMOVE ,JUST TAKE YOUR TIME , BE SURE TO GET YOUR PLENUM GASKET SET BEFORE HAND AND WHILE WORKING ON REPLACING FUEL PRESSURE REGULATOR COVER YOUR INTAKE PORTS WITH RAGS SO NOT TO DROP ANY -PARTS INTO THE CHAMBERS
#314 of 326 Re: 1992 chevy 4.3 v6 won,t idle [marblaze] by tidester HOST Oct 28, 2009 (9:19 pm)
Replying to: marblaze (Oct 28, 2009 5:23 pm) I recommend against using ALL CAPS when posting a message in our Forums. People tend to skip past messages written in ALL CAPS because they find them hard to read.   tidester, host SUVs and Smart Shopper

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