My Chevy 2003 S10 V6 has code P0200 and P0300.. HELP!

45

Asked by Apr 27, 2014 at 09:24 PM about the 2003 Chevrolet S-10 2 Dr LS Standard Cab SB

Question type: Maintenance & Repair

Started my car and check engine light turned on with a severe shaking and idling
problem. Check engine light would blink on and off during acceleration. I took truck to
autozone and they told me cylinder 3 was misfiring. I changed my spark plugs and still
having same issues. Went again to autozone and they said it was code p0200 and
p0300 due to issue with a fuel injection for cylinder 3. They sold me a single injection
wire for cylinder 3 for 100 bucks. I'm not a mechanic but I don't want to spend much
money (who doesnt). What is the next step. Should I keep googling ways to get to the
fuel injection and change fuel injection wire? buy the entire "spider injection" set? Run
Lucas injection cleaner and continue to drive, hoping it will fix? take to mechanic? is
there another cause? Hoping to hear some feed back. Thanks! picture is for the s10
truck with issues.

9 Answers

110,065

http://www.obd-codes.com/p0300 -- this one to. The possible solutions section has some things to check that will help you narrow down what the issue actually is. Hope these help

16 of 16 people found this helpful.
45

Thanks for the link....the guy at Autozone said injector 3 was "Open or shorted injector" recommended me to change out just that injector. Is that easy to change out? do i need any "specialized" tools.

4 of 4 people found this helpful.
110,065

How does he know it was #3? To know that for sure it should have thrown a p0203 and p0303 codes.

2 of 2 people found this helpful.
110,065

http://www.obd-codes.com/p0200 -- 1. If you have multiple misfire/injector codes, a good first step is to unplug all the fuel injectors and then turn the ignition on, engine off (KOEO). Check for presence of battery voltage (12 Volts) at one wire of each injector connector. If all are missing, check for continuity to ground on the voltage circuit by using a test light connected to positive battery and probe each voltage feed. If it lights up, then there is a short to ground on the voltage feed causing a short. Get a wiring diagram and repair the short on the voltage feed and reestablish proper battery voltage. (Don't forget to check for a blown fuse and replace as necessary). NOTE: It's possible for one injector to short out the whole battery voltage feed to all the injectors. So if you have lost voltage to all the injectors, replace the blown fuse and plug each injector in, one by one. If the fuse blows, the last injector you plugged in is shorted. Replace it and retest. If only one or two battery feeds are missing, then it's more likely to be a shorted battery voltage feed in the individual injector wiring harness. Inspect and repair as necessary. 2. If you have battery voltage fed to each injector harness, then the next step is to get a noid light to check for injector driver operation. A noid light will insert into the injector harness in place of the fuel injector and flash rapidly when the injector driver operates. Check each fuel injector connector. If the noid light flashes rapidly then suspect the injector. Ohm each fuel injector if you have a resistance specification. If the injector is open or the resistance is higher or lower than the spec, replace the fuel injector. If the injector tests out, the problem is likely an intermittent wiring problem. (Remember that a fuel injector can work properly when cold but go open when hot, or vice versa. So it's best to do these checks when the problem is occurring). Check the wiring harness for any chafing, or the injector connector for loose pins or a broken lock. Repair as necessary and retest. Now, if the noid light doesn't flash, then there's a problem with the driver or the driver circuit. Unplug the PCM connector and ohm the fuel injector driver circuits. Any resistance means there's a problem. Infinite resistance points to an open in the circuit. Find it and repair it, then retest. If you can find no problem with the harness and there is no fuel injector driver operation, then check the PCM powers and grounds. If they are okay, the PCM may be at fault. Read more at: http://www.obd-codes.com/p0200 Copyright © OBD-Codes.com

2 of 2 people found this helpful.
110,065

I feel your 200 code is causing the 300 code. I would check the injectors as described above in order to narrow down your issues. Doing so should give you a better idea of what is wrong and also keep you from just throwing hard earned money and parts at the issue.

18,275

niether p0200 or p0300 narrow down cyl #3. Its just injector circuit malfunction and random missfire. The problem with this repair is you have to take the upper intake off to get to the injectors Once done the truck wont be driveable. If you are not familiar with this kind of work I would suggest taking it to a mechanic before you have to add tow fee to your bill

2 of 2 people found this helpful.
110,065

http://www.obd-codes.com/p0200 -- check this out

9 of 9 people found this helpful.

FYI to this old forum you do not have to take the intake off, just the 2 10 mm head bolts from the injector rail then you can fanigel the injectors out as needed.

18,275

You've clearly never worked on a 4.3

Your Answer

Add photo

Related Questions

S-10

Looking for a Used S-10 in your area?

CarGurus has 1,345 nationwide S-10 listings starting at $1,395.

ZIP:

Search Chevrolet S-10 Questions

Chevrolet S-10 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,300
#2 John Saffrahn
John Saffrahn
Reputation 970
#3 Trebor66
Trebor66
Reputation 960
View All

Related Models For Sale

Used Ford Ranger
197 Great Deals out of 5,805 listings starting at $1,650
Used Chevrolet Silverado 1500
1,716 Great Deals out of 175,751 listings starting at $1,250
Used Chevrolet Colorado
217 Great Deals out of 24,313 listings starting at $2,495
Used GMC Sonoma
5 Great Deals out of 469 listings starting at $2,500
Used Toyota Tacoma
542 Great Deals out of 40,814 listings starting at $2,495
Used Ford F-150
2,195 Great Deals out of 206,316 listings starting at $1,499
Used Dodge Dakota
106 Great Deals out of 3,781 listings starting at $1,680
Used Nissan Frontier
304 Great Deals out of 25,149 listings starting at $1,995
Used GMC Sierra 1500
825 Great Deals out of 68,199 listings starting at $2,484
Used Chevrolet Blazer
4 Great Deals out of 1,167 listings starting at $1,255
Used Dodge Ram 1500
453 Great Deals out of 11,152 listings starting at $700
Used GMC Canyon
92 Great Deals out of 9,387 listings starting at $2,495
Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217
Used Ford Mustang
472 Great Deals out of 45,735 listings starting at $1,999

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.