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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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#218 of 326
94 BRAVADA WON'T START by gg1328
Oct 20, 2008 (10:28 am)
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HI GUYS
 
I have a 1994 Bravada 4.3 CPI Engine - Vin W, 135,000 miles on it. I own the car about 4 and a half years and is used mainly as a 2nd car and in winters. (4 wheel drive vehicle)
 
THE CAR WON'T START, I CHANGED ALMOST EVERYTHING. THE ONLY THING LEFT IS THE CRANKSHAFT POSITION SENSOR. I WAS TOLD IN QUESTION 182 THAT IT CAN BE FOUND FROM UNDERNEATH THE FRONT PUMPER AT THE 7'OCLOCK POSITION. I SEARCHED HIGH AND LOW, AND I STILL CAN'T FIND IT.
 
CAN ANYONE PLEASE HELP ME WITH FURTHER DETAILS? I'M GOING NUTS TRYING TO LOCATE IT. MY INSPECTION IS DO NEXT MONTH, AND I'M HOPING TO GET IT GOING BY THEN. MY ORIGINAL QUESTION WAS 181. I ALSO SMELL GAS WHEN I CHECK MY OIL. CAN ANYONE PLEASE TELL ME WHAT THIS MEANS ALSO?
 
THANKS,
GG1328
#219 of 326
Re: 94 BRAVADA WON'T START [gg1328] by mchituck
Oct 20, 2008 (2:15 pm)
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Replying to: gg1328 (Oct 20, 2008 10:28 am)

sounds like a leaking central port injection unit is it tbi or carb if it is tbi could be leaking on top of plenum which would cause fuel smell in the oil. I think this is the year that has the fuel regulator problems on the cpi or the fuel lines running through the plenum, but i wouldn't start it with plenum off but i would turn the key on so the fuel pump runs so you can look for a leak. They sell fuel a regulator repair kit and gm sells fuel line repair kit. One way to test it might be to put a fuel pressure guage on it turn the key its supposed to hold around 50-60 psi for 2 min if it bleeds off you know you have a leak. Also if you do have a leak it should be very noticable when you take off upper plenum should be black if there is clean brown tint spots sign of where your fuel is leaking. I have a 98 blazer thats how i know this stuff its having starting probs need to replace ignition control module, or distributer cap
#220 of 326
Re: 94 BRAVADA WON'T START [mchituck] by gg1328
Oct 20, 2008 (3:24 pm)
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Replying to: mchituck (Oct 20, 2008 2:15 pm)

Thanks for your quick reply. I'm trying to locate the CRANKSHAFT POSITION SENSOR. If you could please be specific about its location. Thanks.
#221 of 326
clicking blazer by xpresofanatik
Oct 21, 2008 (6:19 pm)
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use to start beautifully. got in and it started and died and started and died tehn clicked like battery dead. Replaced battery and banged on starter, still clicked. Took it to mechanic and he said probably starter but instead of me buying it and it not being it he tried to turn the engine manually and did so but said that it turns counterclockwise but when he turns it clockwise it goes for a little while than gets to where he can't move it any longer. Why? Should I replace the starter? What about all the ppl on here that say the cylanoid or relay or flywheel not lining up? They say to grease up spark plugs and replace them. I am a single parent with no $ for a new car. please help.
#222 of 326
Re: 94 BRAVADA WON'T START [gg1328] by jlflemmons
Oct 22, 2008 (9:20 am)
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Replying to: gg1328 (Oct 20, 2008 3:24 pm)

Look at the crankshaft, bottom pulley, front of engine. There should be a small wire harness coming from above and plugging into a small device at the 7 o'clock position as you face the engine.
 
That device is the CPS. If it isn't there, you now know why the car won't start!
 
 
#223 of 326
Re: 94 BRAVADA WON'T START [jlflemmons] by gg1328
Oct 22, 2008 (4:08 pm)
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Replying to: jlflemmons (Oct 22, 2008 9:20 am)

Thank you very much!!! I will look for it on the weekend.
 
George
#224 of 326
96 chevy blazer very bad miss plz help by chosen1_931
Oct 22, 2008 (9:02 pm)
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ok i have a 96 chevy blazer i have replaced spark plugs and wires,the egr valve,new fuel pump,and fuel filter,new air filter,rotary cap and button ,a sensor or something thats underneath the rotary cap and buton,the pcv valve, ive ran dry gas threw it an fuel injection cleaner an everything i can think of the check engine light is not on ...ok if im jus driving regular the truck misses very very bad if i get on it it will miss at first then smooth out an occasonily miss an as soon as i slow down it will start missing real bad again the motor isnt making any weird noises or anything an ive also checked for vacum leaks an cant find any please if you no wats wrong help me i would greatly appreciate it!!!!!!!!!!thanks
#225 of 326
Re: 94 BRAVADA WON'T START [jlflemmons] by gg1328
Oct 24, 2008 (10:03 am)
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Replying to: jlflemmons (Oct 22, 2008 9:20 am)

Hi, it's me again. I looked for the Crankshaft Position Sensor this morning, and I couldn't find it. I took off some kind of mat that was bolted to the bottom so i could have a better and closer look. I looked hi and low all around near the bottom pulley at the 7 o'clock position. I thought maybe it broke off and i would see wires hanging. Nope. No wires either. Can you please still assist me further. Might it be in some other location?
 
Thanks again,
gg1328
#226 of 326
Re: 96 chevy blazer very bad miss plz help [chosen1_931] by blazergirl96
Oct 24, 2008 (6:28 pm)
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Replying to: chosen1_931 (Oct 22, 2008 9:02 pm)

Hi. I wish I could help you...because I have almost the exact same problem!! Same year and done almost all the same things!!! I do notice that mine is worse if I drive in OD. If I am in D...it's a little better. So I am with you on looking for an answer!! It's driving me crazy!!
 
Good Luck!
#227 of 326
Re: 96 chevy blazer very bad miss plz help [blazergirl96] by chosen1_931
Oct 24, 2008 (10:34 pm)
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Replying to: blazergirl96 (Oct 24, 2008 6:28 pm)

a buddy of mine owns a garage an he checked it out for me he said he had a blazer come in same year an everything doing the same thing he said it was the injectors wich on this year modle is the spider injectors he said theyre bad for cracking on the hoses coming off the injectors (the part that looks like legs off a spider) i have had several people tell me the same thing so i have ordered one an when i put it on.... if it fixes the prob. i will deff. let ya no

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