97 Blazer ENGINE PROBLEMS?? HELP ME!!! - Page 2

DINO55 · #16 02-12-2006, 07:30 AM

When was the last time you had a full tune up on the truck?

2kTrailBlazer · #17 02-12-2006, 08:52 AM

well with the blazer first of all i dont think you have a coil pack, should be a cap and rotor. thats how mine is. its a 2000. Second the blazer doesnt have fuel injectors it has little springs that need a ceartin amount of pressure to realease and then allowing fuel to pass. so, your fuel pump HAS to be in full operating pressure. wich sucks bc some cars can work with less pressure. so it verry well could be a fuel pump but i wouldnt think so . if you think about it there isnt much more pressure on the fuel pump itself, at least not any more then when you would floor it on flat ground. but there is more stress on the motor. I would take it to a full service shop and have them take a look at it.

97blazerct · #18 02-22-2006, 03:16 PM

Quote:

Originally Posted by DINO55

When was the last time you had a full tune up on the truck?

What do you mean by full?
i got new plus, wires, coolant flush, rebuilt tranny, oil change, new battary etc.. within the last year

DINO55 · #19 02-22-2006, 05:17 PM

97Blazerct...
What brand of Spark plugs did you put in her? AC Delco Plat's gaped at 0.60...
Did you change the Distributor cap, and rotor? Replace the fuel filter, Air filter, PCV valve? Did you Clean the MAF sensor and screen? What brand of new wires are in the truck right now? Something good I hope, (Not chepo's)
That's all I ment by Full Tune up...

Blazer SS · #20 02-22-2006, 06:09 PM

Sounds to me like a vacumn leak, Check the hose to your brake booster and follow it back to the manifold, make sure that the vacumn assembly is fully seated,then check to see if your spark plug wires are fully making contact at the distributor and plugs. Make sure that there isn't a carbon trail on your distributor. Long shot also check your engine ground.

BlazerLT · #21 02-26-2006, 01:39 PM

Also replce the ignition switch.

It is the 1997 weakness.

97blazerct · #22 02-27-2006, 12:20 AM

Quote:

Originally Posted by DINO55

97Blazerct...
What brand of Spark plugs did you put in her? AC Delco Plat's gaped at 0.60...
Did you change the Distributor cap, and rotor? Replace the fuel filter, Air filter, PCV valve? Did you Clean the MAF sensor and screen? What brand of new wires are in the truck right now? Something good I hope, (Not chepo's)
That's all I ment by Full Tune up...

I have AC delco rotor, distributer cap, plus, and wires.. I did the fuel filter, rcharged my K&n, and new PCV... Didnt clean the mass air flow sensor or screen..

BlazerLT · #23 02-27-2006, 12:21 AM

When was the last time you changed the cap and rotor?

DINO55 · #24 02-27-2006, 07:36 AM

If your recharging your K&N airfilter, you need to clean the MAF ASAP...
WARNING>>>BE VERY CAREFUL WHEN CLEANING THE MAF,
What brand of Spark plugs did you use and what were they gapped at???

BlazerLT · #25 02-27-2006, 02:32 PM

Could be the MAF with a little oil on it.

Brake cleaner and a fine super soft toothbrush should clean the sensor filament wires nicely.

97blazerct · #26 03-02-2006, 03:52 PM

I have AC delco plugs and wires and I dont know what the gap was because my dads friend, whos a GM mechanic, put them in for me..

Wheres the MAF located anyway?

blazin911 · #27 03-02-2006, 04:28 PM

i have a 95 blazer and when i had my cylinder misfire it was my distributor. this backyard mechanic put in on off timing. you can get misfires with a coulple of things. what have you put on the truck and what if anything has gone wrong since youve had it give my some history.

BlazerLT · #28 03-02-2006, 05:32 PM

Quote:

Originally Posted by 97blazerct

I have AC delco plugs and wires and I dont know what the gap was because my dads friend, whos a GM mechanic, put them in for me..

Wheres the MAF located anyway?

It is the sensor 1/2 way up the air intake assembly between the filter and the throttle body hat.

bhesson · #29 03-26-2006, 08:19 AM

I'm trying to be sure I'm correctly identifying the MAF on my 2000 Blazer. Can you verifying that for me?

You have the air filter assembly, then immediately after the filter housing a switch with a mesh screen in it and three wires going into it and and then further up the intake hose, you have a two wire sensor.

Is the MAF sensor the last one before the intake with two wires about half way up the intake hose or it is inside the switch with the mesh screen in it?

Sorry if my description isn't perfect. I appreciate the help ....

drdd · #30 03-26-2006, 09:37 AM

Quote:

Originally Posted by bhesson

I'm trying to be sure I'm correctly identifying the MAF on my 2000 Blazer. Can you verifying that for me?

You have the air filter assembly, then immediately after the filter housing a switch with a mesh screen in it and three wires going into it and and then further up the intake hose, you have a two wire sensor.

Is the MAF sensor the last one before the intake with two wires about half way up the intake hose or it is inside the switch with the mesh screen in it?

Sorry if my description isn't perfect. I appreciate the help ....

the MAF is the one with the screen in it. The smaller one is Air Intake Temperature sensor.

if it's throwing codes, try cleaning the MAF with a Q-tip and some spray electric cleaner. be gentle on those wires.

why do you suspect the MAF?

on a 2000, it might be time for new plugs, wires, distributor cap, and PCV valve. clean the throttle body too. have you done any of this recently?

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