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#1
04-27-2006, 02:24 PM
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99 Blazer Hesitation
I have a 99 4x4 4-door. This only happens for about 10-20 seconds after I start the truck if I do not let it warm up. I try to put on the gas and there hesitation. No power. Due to the fact that it is only for the first 20 seconds I am thinking it might be some sensor that is taking a little while to get warmed up? Has anyone else encountered this? Any ideas what it could be?
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#2
04-27-2006, 06:04 PM
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Re: 99 Blazer Hesitation
What engine and mileage?
What is the tune up history? Fuel filter and fuel pressure OK? What kind of air filter and plugs? Any codes or check engine lights? MT
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Remember proper testing gives us the answer to many problems. MT
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#3
05-01-2006, 07:16 AM
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Re: 99 Blazer Hesitation
It is the 4.3 V6, 88,000 miles
It has had a normal tune up history. Fuel Filter replaced about 20,000 ago Fram air filter replaced 10,000 ago, Bosch Platinum plugs and wires replaced 15,000 ago. No codes or check engine light. Replaced catalytic converter and O2 sensors about 5,000 ago, could this have something to do with it, but problem was occuring before this. Thanks for the help!
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#4
05-01-2006, 08:00 AM
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Re: 99 Blazer Hesitation
It might just be the plugs. Our trucks have a tendency to be a little picky when it comes to plugs, it is best to use genuine AC Delco Plats. Make sure that they are properly gapped.
Additionally, you may want to clean your MAF - just search the forum on "clean" + "MAF", and you will find easy to follow detailed instructions. Very easy.
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billibong 99 4X4 Blazer LS Vin W Repairs: U/L Ball Joints, I/O Tie Rod Ends, New Tie Rod Adjusting Sleeves, New Idler Arm, R & L Front Hubs, R & L Upper CA Bushings, New Gabriel Ultramax Shocks (what a difference) F & R Brakes and Rotors at 110,000. Infinity Speakers to replace the blown factory sets. 162K+ and still kicking.
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