Stalling issue- Driving me crazy

[PALLADIN72]

Originally Posted by BlazerLT

Does the fuel pump hum when you try to restart it?

Ever replaced the fuel filter?

First thing we did was replace filter & pump. I've driven it by necessity some 300 miles since replacing pump.

Replaced:
Fuel Filter
Fuel Pump
ECT Sensor
IAC
Have not replaced TPS, but did about 1.5 years ago. Symptoms much different. Does EGR give this type of symptom? Can I test it somehow? I'm tired of throwing $$ at parts. Can't afford much more. I'm afraid of what starter fluid is doing to engine, even with just two quick shots.

[BlazerLT]

EGR could do it.

Remove it, clean it and reinstall it with a new EGR gasket.

[PALLADIN72]

Originally Posted by BlazerLT

EGR could do it.

Remove it, clean it and reinstall it with a new EGR gasket.

How do I clean EGR? I saw that I cant use solvent. Is there something special?

[Austin8214]

Originally Posted by PALLADIN72

How do I clean EGR? I saw that I cant use solvent. Is there something special?

Carb cleaner works good to clean your EGR. However i still think you need to check your battery. Low battery voltage can cause these kind or troubles.

[PALLADIN72]

Originally Posted by Austin8214

Carb cleaner works good to clean your EGR. However i still think you need to check your battery. Low battery voltage can cause these kind or troubles.

Checked battery, reads 13.8 v

[BlazerLT]

Originally Posted by Austin8214

Carb cleaner works good to clean your EGR. However i still think you need to check your battery. Low battery voltage can cause these kind or troubles.

Also use a new EGR gasket when you reinstall it.

[PALLADIN72]

Originally Posted by BlazerLT

Also use a new EGR gasket when you reinstall it.

Working on it now. I mentioned it I think before, but not sure of significance. It starts in morning, first thing. It wont stall untill it warms up to about 180. Is this significant?

[gtboiii11]

alright buddy i am having the exact same problem as you, i finally gave up and had to drop it off to a serious garage, when mine warms up maybe after being driven 3-5 miles, you give it gas and u really cant even hear the engine then it may just flash check guages and the blazer will shit itself off, i have replaced fuel filter, pump, sending unit tank, done a tune up, cleaned egr,cleaned inside the plenum, replaced tps and o2 sensors and none of this worked, making me have to take it to the garage, they told me that it was my control module, which makes perfect sense, figuring that after it warms if the coil is not seeing a spark it will not allow it to run properly or even at all, same problem happened it my boat. So i told them to go ahead and replace it, the part is 94 dollars and they are only charging me 12 dollars for labor figuring it is a very quick job. I will tell you how this works out tommorow, but i am pretty positive after replacing all of this that this has to be the problem, do your symtoms sound the same as mine?

[PALLADIN72]

Originally Posted by gtboiii11

alright buddy i am having the exact same problem as you, i finally gave up and had to drop it off to a serious garage, when mine warms up maybe after being driven 3-5 miles, you give it gas and u really cant even hear the engine then it may just flash check guages and the blazer will shit itself off, i have replaced fuel filter, pump, sending unit tank, done a tune up, cleaned egr,cleaned inside the plenum, replaced tps and o2 sensors and none of this worked, making me have to take it to the garage, they told me that it was my control module, which makes perfect sense, figuring that after it warms if the coil is not seeing a spark it will not allow it to run properly or even at all, same problem happened it my boat. So i told them to go ahead and replace it, the part is 94 dollars and they are only charging me 12 dollars for labor figuring it is a very quick job. I will tell you how this works out tommorow, but i am pretty positive after replacing all of this that this has to be the problem, do your symtoms sound the same as mine?

Symtoms are almost the same, except that mine runs great until I come to a stop. If I leave my foot on the gas it will stay going. It accelorates just fine. I'll take a look at it and let you know.

[BlazerLT]

Originally Posted by PALLADIN72

Working on it now. I mentioned it I think before, but not sure of significance. It starts in morning, first thing. It wont stall untill it warms up to about 180. Is this significant?

Sounds like it doesn't like going to closed loop.

Check your ECM grounds.

[Austin8214]

Originally Posted by PALLADIN72

Checked battery, reads 13.8 v

is that with the truck running? Also have someone check the voltage as you are starting the truck if voltage drops below 11 then you have a problem.

[gtboiii11]

the battery wont even cause signifigant problems if a lil undercharged at 11.6 or w/e that should be fine

[PALLADIN72]

Originally Posted by Austin8214

is that with the truck running? Also have someone check the voltage as you are starting the truck if voltage drops below 11 then you have a problem.

13.8 with the truck running.

Just finished cleaning EGR. Replaced gasket as well. Same result. Can it be a heat issue? Gage says it is about 220, but campartment feels hotter. Could this be related? Radiator not bubling over, but feels hotter than a lot of cars. Seems like it has always been this way, but now I'm grasping at straws.

[BlazerLT]

Originally Posted by gtboiii11

the battery wont even cause signifigant problems if a lil undercharged at 11.6 or w/e that should be fine

If the alternator is not changing it you bet your ass it will cause problems.

[BlazerLT]

Originally Posted by PALLADIN72

13.8 with the truck running.

Just finished cleaning EGR. Replaced gasket as well. Same result. Can it be a heat issue? Gage says it is about 220, but campartment feels hotter. Could this be related? Radiator not bubling over, but feels hotter than a lot of cars. Seems like it has always been this way, but now I'm grasping at straws.

Something is wrong then, the alternator and battery should be at 14.4+ when running.