if your having a mystery running like crap problem

[WalkGood]

Quote: Originally Posted by Strip9R

Since I had 171,400 miles on the truck i decided it needed a tune up anyway

What brand parts, and if possible how much did you pay for each part individually?

[Strip9R]

Quote: Originally Posted by WalkGood

What brand parts, and if possible how much did you pay for each part individually?

Parts were purchased at Autozone and Advance Auto.
Brands/Price

#1 GP Sorsen
Coil $31.50
Distributor Cap $23.00/Rotor $9.00

#2 Autolite Wires $28.50

#3 ACDelco Plat Plugs .060 gap $6.00/each

#4 (3)Bosch Oxygen Sensors $52.00/each

#5 Fram Airfilter $9.00 (I have a K&N filter but decided to try something else for winter time.) I may go back to using it in the spring/summer.

#6 Duralast Belt $17.00

#7 PCV valve not sure of brand $1.60

[pshawnpee]

i'm having the same problem but only after 45 mins of driving its. i guesing something is getting hott? could this be my problem

98 blazer 4.3

[montecarlo33]

I think its crap that GM wont fix the problem. Obviously its happing to more than Cali trucks. I guess I will be converting over to MFI soon. Mine isnt too bad now, but its getting there. I got a mechainc buddy who works for a GM dealership, I'm gunna see what he can do for me....probley nothing.

[wssop123]

I have an 02 s10 bought brand new. problems started 2 months after purchase and was intermittent from there on out. 0300 code during hard acceleration and when vehicle is under load, hills, etc. did not always register on the computer when check by dealer. been to multiple dealers, shops, mechanics with no resolution, they could not tell me what the real issue was. replaced tranny that had internal defect, along with every other possible part myself or auto parts store could think of. spent untold amounts of money and time trying to solve the misfire dilema. all 6 cylinders misfire, 3 (heaviest misfires) and 4 are the main issues, mostly driving on highway back and forth to work. Doesn't like to shift into overdrive and runs high rpms until it settles. 105,000 miles, the problems have just gotten worse and worse and more consistent as time passes. found the tsb report from dealer after i gave him the complaint number. dealer cleaned injecters with GM crap. shop foreman had the vehicle FOUR days and had "no clue" what was wrong. said just to start randomly replacing parts and see what happens. replaced program in the computer over and over. recently noticed intake is occasionly damp with residue. once in a while some spots of discolored liquid. smells like gas, feels or looks like oil (autozone guy said its mixed gas and carbon deposits). after engine is run, look in through brake booster vacumn line into intake, i notice a mist or lingering fog inside intake. went in to dealer and looked at new injector assembly versus replacing each single part of current system. the new system is redesigned amd improved (DUH). i have nothing else to replace except the entire engine or computer system. might need to take it to the local bombing site as new target for the A10's if the new injector system doesn't solve this whole problem. will update after new system is installed. most likely, i will install this myself after buying from the dealer.

[TECHRF]

Quote: Originally Posted by wssop123

I have an 02 s10 bought brand new. problems started 2 months after purchase and was intermittent from there on out. 0300 code during hard acceleration and when vehicle is under load, hills, etc. did not always register on the computer when check by dealer. been to multiple dealers, shops, mechanics with no resolution, they could not tell me what the real issue was. replaced tranny that had internal defect, along with every other possible part myself or auto parts store could think of. spent untold amounts of money and time trying to solve the misfire dilema. all 6 cylinders misfire, 3 (heaviest misfires) and 4 are the main issues, mostly driving on highway back and forth to work. Doesn't like to shift into overdrive and runs high rpms until it settles. 105,000 miles, the problems have just gotten worse and worse and more consistent as time passes. found the tsb report from dealer after i gave him the complaint number. dealer cleaned injecters with GM crap. shop foreman had the vehicle FOUR days and had "no clue" what was wrong. said just to start randomly replacing parts and see what happens. replaced program in the computer over and over. recently noticed intake is occasionly damp with residue. once in a while some spots of discolored liquid. smells like gas, feels or looks like oil (autozone guy said its mixed gas and carbon deposits). after engine is run, look in through brake booster vacumn line into intake, i notice a mist or lingering fog inside intake. went in to dealer and looked at new injector assembly versus replacing each single part of current system. the new system is redesigned amd improved (DUH). i have nothing else to replace except the entire engine or computer system. might need to take it to the local bombing site as new target for the A10's if the new injector system doesn't solve this whole problem. will update after new system is installed. most likely, i will install this myself after buying from the dealer.

get it from GM parts direct or Linder tech dealer want too much. been there done that.
read this on SSF and this here hope it all looks and sounds familiar.

[Bryan_Derewicz]

i have a 2000 s-10 4.3L and my truck is having very similar sounding problems....

although it is not throwing out a check engine light, but when we plugged the computer on it the cut off RPM was set to 2500 which sounds like limp mode... but no codes....

we reset the fuel cutoff to 5600 and it ran great for 3 days and the problem started again

any ideas ????

[4x4zr2GA]

its a common problem thats been discussed alot on many s10 sites... basically its swapping the 94'-95' style intake over to the 96' - 05' style intake. basically swapping the ones that look like 3.1 and 3.4 intakes over to the v8 "style" intake, the big black plastic bubble looking one. they made those from 96' up till the last one. but, the bad thing is, the lower intake remains the same, so does the injector spider unit and poppets. you replace them anyway when you swap upper intakes over to the new one, so naturally it will run better. just replace your spider unit and/or injector poppets if you have the old style intake and youll be fine.

[badazztoyz]

so this is only for california vehicles?? I would think that if it was not just a problem for emissions but a problem that made the car undriveable it would be for any state

[Ronald_Reagan]

yeah its on vehicles in cali unfortunately for everyone else. im gonna be replacing the injection shit soon cos i cant stand having no power anymore. if that dont work alot of people said that replacing the distributor gear shaft helps cos they had bad heat treatment and it causes them to get sloppy. http://www.obdii.com/ubb/Forum1/HTML/001357.html Its somewhere in there, but then some people said it didnt fix the issue.

[pfallone001]

Quote: Originally Posted by Crew Cab Sonoma

Califonia mandates the use of oxygenated fuels, few other states do. so that could be part of the problem.

if GM issued a TSB for this, why would the dealers try to conceal it???
the dealership gets paid by GM for performing the repairs, so it wouldnt be in thier interest to try to deny it exists.....

I work for GM and this was a big a fiasco back in the heyday of the scpi unit. I wont say exactly what the engineers found but crew cab sonoma is on the right track with the california comment.

[pfallone001]

Quote: Originally Posted by wssop123

I have an 02 s10 bought brand new. problems started 2 months after purchase and was intermittent from there on out. 0300 code during hard acceleration and when vehicle is under load, hills, etc. did not always register on the computer when check by dealer. been to multiple dealers, shops, mechanics with no resolution, they could not tell me what the real issue was. replaced tranny that had internal defect, along with every other possible part myself or auto parts store could think of. spent untold amounts of money and time trying to solve the misfire dilema. all 6 cylinders misfire, 3 (heaviest misfires) and 4 are the main issues, mostly driving on highway back and forth to work. Doesn't like to shift into overdrive and runs high rpms until it settles. 105,000 miles, the problems have just gotten worse and worse and more consistent as time passes. found the tsb report from dealer after i gave him the complaint number. dealer cleaned injecters with GM crap. shop foreman had the vehicle FOUR days and had "no clue" what was wrong. said just to start randomly replacing parts and see what happens. replaced program in the computer over and over. recently noticed intake is occasionly damp with residue. once in a while some spots of discolored liquid. smells like gas, feels or looks like oil (autozone guy said its mixed gas and carbon deposits). after engine is run, look in through brake booster vacumn line into intake, i notice a mist or lingering fog inside intake. went in to dealer and looked at new injector assembly versus replacing each single part of current system. the new system is redesigned amd improved (DUH). i have nothing else to replace except the entire engine or computer system. might need to take it to the local bombing site as new target for the A10's if the new injector system doesn't solve this whole problem. will update after new system is installed. most likely, i will install this myself after buying from the dealer.

hmmm.... if its only during hard acceleration idk if the scpi unit will fix it...sounds like excessive clearance in the valve guides.. good way to figure out is to pull valve covers, valve springs and chuck the valve back and forth and use a dial indicator to check clearance..if you are actually going to do this I can check into a specfor you. .just make sure you dont drop it in the cylinder!!

[blanz]

My turn to say "here we go again"
http://www.s10forum.com/forum/f107/s...de-kit-324166/

Scroll down for pixs in the thread.
Bill.

[Vikinglax18]

this is bullshit mines starting to do something that sounds like this.


I'll be driving like regular and during random times, some multiple in a row, some spaced out, the engine will stutter for a half second and then go back to regular, stutter, etc.

I don't want to deal with this shit man. and when I'm driving, if i hit the gas a tad harder, the stick shakes and the engine sounds like its missing a beat! GD it!

as well as that, I've drastically lost power response lately, and its getting worse.

[bushy409]

Hi new here I have a 99 dime it was running grate but used way to much gass ,, then just quit ,, put a fule pump in it wont start then put 5 gal of gas in it then would start and run for a bit then quit ,, put more gas in it now it wont start ,, also new fuel filter ,, after reading this therad i think i should think before i start throwing money at it .. No codes gitting spark .. This is not my first rodeo and i git the imprastion that somthing is going on in the fule dep.. I have many hot rods 1970 RS SS Camaro 1967 L 78 Chevelle love carbs what do u all think ?

[Rhotpursuit]

Get a frickin spell checker...

[bushy409]

that not wat i asked

[Mikey00Sten]

I'm having a problem that fits this description perfectly, but the truck is not throwing a code. Is it possible to be having this problem without throwing a code? What codes should it be throwing?

[j894]

Quote: Originally Posted by bushy409

Hi new here I have a 99 dime it was running grate but used way to much gass ,, then just quit ,, put a fule pump in it wont start then put 5 gal of gas in it then would start and run for a bit then quit ,, put more gas in it now it wont start ,, also new fuel filter ,, after reading this therad i think i should think before i start throwing money at it .. No codes gitting spark .. This is not my first rodeo and i git the imprastion that somthing is going on in the fule dep.. I have many hot rods 1970 RS SS Camaro 1967 L 78 Chevelle love carbs what do u all think ?

Are you checking for spark just off the coil or off of each plug wire?
sometimes the ignition parts (cap/rotor) are fragile.

Do you have a fuel pressure gauge to check the fuel pressure?

[rick_96s10]

been reading through this article and I must say its a wealth of info and is exactly the problem I been experincing with my 96 S10 4.3 X VIN number..Have already done a full tune up, plugs, wires, cap and rotor.. new pcv valve tried a new ignition coil and also ignition module, fuel pressure is fine from the fuel pump too.
So after reading this thread Im convinced I found where my problem lies. So I put two bottles of the chevron techron injector system cleaner in my full tank of gas and after two days of driving am starting to notice the missing and hesitation disappearing. my question is im wondering if I can take the spider unit out and clean it manually or if this is too much of a hassle or should I take it to GM dealership or other shop with the capabilities to do a injections system cleaning.. just want to make sure its done thorough and not have to deal with this issue every other week or adding fuel injector cleaner at every tank of gas..and if a manual cleaning is recommended are there any tutorials on this procedure for the haynes manual I have doesnt outline this subject in to much detail.. Im not certified mechanic but have worked on my share of motors and cars in my time so I beleive I have the mechanical apptitude that is takes but like anyone want to do it the easy way the first time and not the hard way..lol.. thanks.. great forum..

[rick_96s10]

bump to the top for some attention to my question..lol..

[Crew Cab Sonoma]

no really effective way of cleaning them by hand.

the GM injector "detergent" is probably the best thing for them.
unless someone knows of something newer thats more effective?

[kevinlovato]

CUSTOMER REIMBURSEMENT

Customer requests for reimbursement are for any previously paid repairs to, or replacement of, the Sequential Central Port Fuel Injection (SCPI) system. Repairs must have occurred within 10 years of the date the vehicle was originally placed in service, or 200,000 miles, whichever occurs first. The requests are to be submitted within two (2) years of the date on which the repair was paid or within two (2) years of the date of this Special Policy Bulletin, whichever is greater.

When a customer requests reimbursement, they must provide the following:

-Proof of ownership at time of repair.

-Original paid receipt confirming the amount of unreimbursed repair expense(s) (including Service Contract deductibles), a description of the repair, and the person or entity performing the repair.



Customers from the State of California, must submit requests for reimbursement directly to (Divisions) per instructions in the owner letter.

If the work was done by someone other than a GM dealership, the amount of reimbursement will be limited to the amount that the repair would have cost GM to have it completed by a GM dealership.

ok so where do i send this in to get my reinbursement???

[Rhotpursuit]

Quote: Originally Posted by kevinlovato

CUSTOMER REIMBURSEMENT

That's only for California

[kevinlovato]

yeah i live in california...i was asking where i send this stuff to get my reinbursement

[Rhotpursuit]

Quote: Originally Posted by Crew Cab Sonoma

no really effective way of cleaning them by hand.

the GM injector "detergent" is probably the best thing for them.
unless someone knows of something newer thats more effective?

I'm looking at giving thia a try...

3M Multi Port Injector Cleaner

[BlkBlzr01]

is there anyone who has done this swap recently? may have to do also here pretty soon. i have never done anything to engine this far in depth. i have only read about things of the sort. can someone give me any pointers about how to tackle it?

[zr2bccan]

Well, well, well. I always wondered why my truck always had a bit of a miss at idle that now shakes the shifter. Always wonderd about the miss under mid throttle under load or with the A/C on. Was considering an intake leak but its intermittent. Measured the coil and its fine. No codes. Sometimes I get in and it runs like a hotrod, other times it feels worn out.

I might just have to try this. Thanks

[Fishnic]

mine starting sim probs. gonna have to track this thread