no one has fixed this????

[essten]

ive searched online for this problem and have found it everywhere. but i cant find anywhere that has the solution. its a 94 s10 blazer 4.3 cpi ive had it for 5 yrs and ive replaced just about everything you can replace on it. it runs awesome. 205,000 miles and it runs better than when i bought it with 60,000 miles. but then it happened... last winter it started, around 40 degrees or below, if the truck sits for about 5 hrs, it wont start. it cranks like its flooded, then when finally starting, it runs like really rich for a minute, then its fine. the rest of the day it will start fine. ive been tryin to fix this since last winter, its hard to try to troubleshoot in the summer becuz again, it only acts up in the winter. if anyone at all can tell me what fixes this problem, ill be in debt to you forever. ive changed the injector, egr, coil, spark plugs fuel filter pump, everything that you would think could cause this problem, ive tried it. but im runnin out of money and i know this is a common problem and someone somewhere has had to have fixed it. please help!?!?!?!?

[93LT]

When you did the injector, did you do the nut kit as well?

[essten]

Originally Posted by 93LT

When you did the injector, did you do the nut kit as well?

im not sure what you mean by the nut kit. do you mean the inlet outlet fuel lines ? if thats what you mean, then yes, i replaced those because one was cracked. ive actually replaced the injector 3 times, one of which only troubleshooting

[essten]

Originally Posted by essten

im not sure what you mean by the nut kit. do you mean the inlet outlet fuel lines ? if thats what you mean, then yes, i replaced those because one was cracked. ive actually replaced the injector 3 times, one of which only troubleshooting

remember...... it only has trouble if its below a certain temperature

[dmbrisket 51]

maby it is getting flooded... got a map sencer?

[essten]

Originally Posted by dmbrisket 51

maby it is getting flooded... got a map sencer?

yea, thats what i was gonna try. but i got a feelin it isnt gonna do any good

[93LT]

Originally Posted by essten

im not sure what you mean by the nut kit. do you mean the inlet outlet fuel lines ? if thats what you mean, then yes, i replaced those because one was cracked. ive actually replaced the injector 3 times, one of which only troubleshooting

Yup, that is what is called the nut kit (strange name for what it is I know). The only thing I could think of that is tempurature related would be the Air temp sensor which is located in the rubber duct between the upper plenum and air cleaner assembly. Might be worth cleaning the tip on this sensor.

[essten]

Originally Posted by 93LT

Yup, that is what is called the nut kit (strange name for what it is I know). The only thing I could think of that is tempurature related would be the Air temp sensor which is located in the rubber duct between the upper plenum and air cleaner assembly. Might be worth cleaning the tip on this sensor.

you mean that little plug that plugs into the bottom of it? i swear if that is the problem im gonna kick my own butt

[essten]

Originally Posted by 93LT

Yup, that is what is called the nut kit (strange name for what it is I know). The only thing I could think of that is tempurature related would be the Air temp sensor which is located in the rubber duct between the upper plenum and air cleaner assembly. Might be worth cleaning the tip on this sensor.

yeah i will clean it, never thought that could cause such a drastic problem. but would that really make it start as if it is flooded?

[GMMerlin]

I would look at the ETC and see if it goes out of spec when the temp gets cold..this will cause your concern
At 40 degrees the sensor resistance should be 7280 ohms
..if it is much higher (9000-10000 ohms, its reading to cold)

[blazee]

Next time it does it, try using a little starting fluid to see if it will start. There is a common issue of hard cold weather starts caused by low fuel pressure as a result of the battery voltage (battery power is lower in cold weather) dropping while attempting to start. Basically, these engine are very anal about the amount of fuel pressure they need. If your fuel pressure is at the bottom of the spec range, the voltage drop caused by the starter won't let the fuel pump get enough power to supply the correct pressure. This issue can be caused by a weak pump, a partially clogged fuel filter, or a weak battery.

[essten]

Originally Posted by GMMerlin

I would look at the ETC and see if it goes out of spec when the temp gets cold..this will cause your concern
At 40 degrees the sensor resistance should be 7280 ohms
..if it is much higher (9000-10000 ohms, its reading to cold)

hi, no ones ever told me this before, can you tell me how to do it?

[essten]

Originally Posted by blazee

Next time it does it, try using a little starting fluid to see if it will start. There is a common issue of hard cold weather starts caused by low fuel pressure as a result of the battery voltage (battery power is lower in cold weather) dropping while attempting to start. Basically, these engine are very anal about the amount of fuel pressure they need. If your fuel pressure is at the bottom of the spec range, the voltage drop caused by the starter won't let the fuel pump get enough power to supply the correct pressure. This issue can be caused by a weak pump, a partially clogged fuel filter, or a weak battery.

ive tried starting fluid and it doesnt help and the pressure at the back of the plenum is fine, im a 12 volt technician, meaning i install alarms remote starters and really loud stereo systems in cars, ive been doing it for around 8 years, i have a big loud stereo system in my blazer that im not even into anymore (weird how you lose intrest) but anyway, the voltage was the 1st thing i checked, and the voltage is fine at both of my batteries, i even went as far as buyin a new rear battery last winter, thinkin that maybe it was junk and was foolin with my front battery but nothin helped. ill post again cuz i got some more clues.....

[essten]

Originally Posted by GMMerlin

I would look at the ETC and see if it goes out of spec when the temp gets cold..this will cause your concern
At 40 degrees the sensor resistance should be 7280 ohms
..if it is much higher (9000-10000 ohms, its reading to cold)

here is what i have planned, saturday morning i was going to take the plenum off and see if there was any gas in it, only because, when my inlet/outlet lines that go into the injector cracked, it started this way, except it did it regardless of the temp. hence the diagnosis of "its getting flooded" i mean it is almost the exact same problem, it takes the same amount of time to start, sounds the same and runs the same for the 1st few seconds its running. once its runnin tho, it runs perfect. i would say its being flooded again somehow...but only when its cold????? i swear the problems i wouldnt be suprised if its haunted. please keep helping me think!!!!! check this out.... over the summer the sylinoid on my starter was junk, only did that click clik thing, but only sometimes. im sure you know what i mean. so, being a sunday, i had to go to auto-zone to get a new one, cuz i was sick of it. so i bring the starter in for a core return and the kid tests it and tells me the starter is fine, its my battery thats the problem. i said its not my battery. so blah blah, he says to me.... "ive been working on cars for over a year i think i know what im talkin about." so im like, whatever dude, just gimmie a starter will ya? hmmm, my starter works fine. this is the type of ppl i have to deal with around here.

[Southern Comfort]

Originally Posted by essten

here is what i have planned, saturday morning i was going to take the plenum off and see if there was any gas in it, only because, when my inlet/outlet lines that go into the injector cracked, it started this way, except it did it regardless of the temp. hence the diagnosis of "its getting flooded" i mean it is almost the exact same problem, it takes the same amount of time to start, sounds the same and runs the same for the 1st few seconds its running. once its runnin tho, it runs perfect. i would say its being flooded again somehow...but only when its cold????? i swear the problems i wouldnt be suprised if its haunted. please keep helping me think!!!!! check this out.... over the summer the sylinoid on my starter was junk, only did that click clik thing, but only sometimes. im sure you know what i mean. so, being a sunday, i had to go to auto-zone to get a new one, cuz i was sick of it. so i bring the starter in for a core return and the kid tests it and tells me the starter is fine, its my battery thats the problem. i said its not my battery. so blah blah, he says to me.... "ive been working on cars for over a year i think i know what im talkin about." so im like, whatever dude, just gimmie a starter will ya? hmmm, my starter works fine. this is the type of ppl i have to deal with around here.

I know this may sound crazy, but have you considered, water in your fuel lines or tank. Nearly all gas stations get water in the tank, not to mention the tank will form condensation due to temperture changes. It happened to my S10 ZR2 4x4. I have leraned to keep my fuel tank full
now. After removing the tank and draining the fuel lines, I haven't had that problem ever again. Just thought I'd try to help you with this problem. I hope it helps you with that problem. Southern Comfort