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Chevy Blazer/GMC Jimmy

512 messages,  Last post on Jan 07, 2010 at 6:28 PM

You are in the Chevrolet Blazer Forum. Your Hosts are steve_ & tidester

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


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#401 of 512
Re: HVAC switch [stevie07] by repairdog
Oct 21, 2006 (2:38 pm)
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Replying to: stevie07 (Oct 21, 2006 4:43 am)

Believe that its a simply vac line from the T on the drivers side underhood - the line goes from the intake to the reservior in the drivers side fender all 5/32" vac and the hard plastic hose goes to the heater control. Default is vent so trace that one and make sure the rubber line is not rotted out/broken underhood.
#402 of 512
Chevy Silverado Blazer K5 by bradyp26
Oct 23, 2006 (2:10 am)
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There is a 1986 chevy blazer k5 for sale on ebay uk but the seller doesn't seem to know the body type , it appears to have bench seats running length wise in the back is there a chevy silverado blazer suv or is this just a camper top ?
 
Thanks
 
Paul
#403 of 512
Re: 95 Chevy Blazer Popping Noise U-Turn [nomogm] by nathan10
Nov 11, 2006 (9:58 am)
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Replying to: nomogm (Dec 15, 2005 2:15 pm)

hey i have a blazer like that so i went out oan checked it and i think that its mostly a factory mistake and that the wheel is allowed to turrn to far putting the suspension in a bind, have you ever noticed how easily youre blazer makes a uturn , mine makes a harder turn than my sunfire, I would suggest that if you whant to stop the popping noise grease the front bushings and the tention bar at the rubbers. i think it will help
                        
                      nathan10 tech
#404 of 512
2000 jimmy starting issue by corbynova
Nov 29, 2006 (12:42 pm)
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My 2000 jimmy has 42 psi fuel pressure KOEO,54 psi at idle.Often I have to use starting fluid.It has the spider unit.Where should I start fuel pump or pressure regulator.How do I check the regulator pressure?
#405 of 512
Re: 2000 jimmy starting issue [corbynova] by repairdog
Dec 01, 2006 (7:40 am)
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Replying to: corbynova (Nov 29, 2006 12:42 pm)

So with the pressure tester connected does the pressure jump close to 60 right after turning the key to run (KOEO) then drop as soon as the 2 sec pump prime stops? Requires min of 58-60psi for cold start.
#406 of 512
2003 chevy blazer idle problem by tothetee2
Dec 01, 2006 (3:10 pm)
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I have a 2003 Chevy Blazer that seems to run a little rough when idling. The RPMs are around 500-600- when at idle.
Is that where they should be?
Kirk
#407 of 512
Re: 2003 chevy blazer idle problem [tothetee2] by repairdog
Dec 02, 2006 (3:01 am)
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Replying to: tothetee2 (Dec 01, 2006 3:10 pm)

In drive thats correct. Many have a slightly rough idle could be from many things: injectors get buildup of waxy crap from cheap gas, cap/rotor, plugs, wires, fuel filter, sensors degraded (O2, MAF, temp, etc), vacuum leak, idle air control valve, clogged air filter, and each has to be looked at. Sorry no easy answer. Can relate to area, mileage, and driving habits.
#408 of 512
Re: 2000 jimmy starting issue [repairdog] by corbynova
Dec 02, 2006 (4:19 pm)
Reply

Replying to: repairdog (Dec 01, 2006 7:40 am)

No! It rarely makes it past 42 psi with KOEO then drops most of the time toward zero.The pressure keeps dropping as soon as the relay kicks off aftr 2 secs.It now will only start on ether an then refuses to stay running.Would this be the injector assy/regulator or fuel pump?I can`t afford to take it in for diag.thanks alot
#409 of 512
Re: 2000 jimmy starting issue [corbynova] by repairdog
Dec 03, 2006 (6:35 am)
Reply

Replying to: corbynova (Dec 02, 2006 4:19 pm)

Here is a pic from Autozone of the fuel system.
http://autozone.com/servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/18/bc- /6f/0900823d8018bc6f.jsp
First is the battery voltage good, fuel filter new, and no fuel leaks in the lines? Need a min of 60psi to start as you have found out. Pump or regulator - pump over $500 and regulator $65. The regulator maintains pressure so a dealer uses a special tester with a valve that they can slowly crank shut and watch. Home mechanics temporarily squeeze the return line off at the flexible plastic section taking care to not damage it and not allowing the pressure to increase above 75psi or line damage may occur. If the pressure does increase the pump is probably good (holds pressure so good pump damper, check valve, and internal tank fuel line connections) and this points to the regulator return pressure spring (or to a leaking diaphram or injector poppet) If pressure does not increase past 60psi the pump is probably bad. After 2 sec the key must be off for 10 sec before it will operate the pump for an additional 2 sec prime.
#410 of 512
Re: 2003 chevy blazer idle problem [repairdog] by tothetee2
Dec 04, 2006 (12:11 pm)
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Replying to: repairdog (Dec 02, 2006 3:01 am)

Thanks for the help. I have changed the plugs, wires, cap/rotor, fuel filter and air filter. Guess that narrows it down. I have 103K on it. Driving habits are all highway averaging 75 MPH. Could it be a timing issue?

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