Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hi, I’m Cary and I’ll be helping you today.Please understand that I can't smell, hear, or touch the vehicle either, so patience is appreciated. I work part-time here on JustAnswer to help you and others repair their own vehicles, and I get credited by your ratings. So before leaving the site make sure and leave me a rating. You can still reply to me as many times as needed, even after the rating..
Is the check engine light on?
This engine has a fuel injection assy under the intake. It sounds like the engine may be running rich due to an injector leaking. Loading the intake the fuel while it sits. Here is a bulletin on the issue. Cleaning may help. But replacement may be needed. To know for sure we need to have a scan tool to see O2 sensors and fuel trim readings.
Here it is
You may try adding fuel cleaner to the gas tank. I would double or triple dose it. May take several times.
When the ambient temp is cold it requires more fuel on start-up. Hence choke on a carb. When hot less fuel. More fuel hot then it loads on start-up and take a few seconds to clear the intake and smooth out.
If you have ran fuel cleaner through it with no results, I have also seen the fuel pressure regulator leak on these fuel injection assy. The regulator come with the assy or can be paused separately.
Sorry. Purchased separately.
I am going to opt out now. Thank You
Hi, My name is ***** ***** for the delay.
I will do my best to assist you.
you still dont get an engine light?no codes?
but it has gave a 300 code?
tell me,,did you give it a tune up?
yes i understand
ok,,i will give you my thoughts on the matter if you like
sense it isnt giving any codes and from the way you explain..
there are a few things that can do this
you need to remove a clean the egr valve,though most times when they stick,it will give a code,i have seen them not give a code..so remove and clean it,it is free and easy to do
replace the ect sensor,,[engine coolant tempeture]..this is what tells the computer the engines temperature and adjusts the fuel accordingly..these can go bad and not give a code..it can starve the engine of fuel or give it too much fuel when they are bad..
the ect ussally cost less than $25
the crank sensor,these crank sensor can give a fit with temperature and not give a code.they can cause a missfire or completely stop the injector pulse when they get hot if they are bad..the crank sensor is located on the passenger side front of the engine near the crank pulley.
and my final thought.
the catalyst converter,,
a clogged catalyst willl cause this problem also,you need to take it to a muffler shop to have them test your catalyst converter
if i were going to pick one of those,,i would think your problem is the crank sensor
stnd by,,i will upload the locations and tests/checks for the 300 code
PLEASE COPY AND PASTE the link below to your browser, I have uploaded more info on this there please copy and paste the link below to your main browser[INTERNET EXPLORER or FIREFOX]
if the link doesn’t work that way, try it this way
If you are satisfied with my answer, Please Rate my answer by clicking the rating button so I can get credit for my work. I’m not always going to be giving you good news, so please don't let this stand in the way of you accepting my answer. .it does not cost you more money and we will still be able to communicate, ,.please understand, i can not see, hear or touch the vehicle and only know what you tell me. Bonuses and positive feedback are appreciated.. if you are not satisfied with my answer, please do not leave bad feed back ,i will gladly opt out and let another expert handle the question. .if i have sent any diagrams, please print them. .sometimes you may need to right click the image [,then save picture as]to save it to your computer so you can open it with your picture program...Please ask if you need more help
please let me know
just let me know
if it wasnt the crank sensor
the ignition module is possible,,,,i would think it is for certain an electrical component breaking down with heat..yes,the ignition module is possible
1996 K1500, 5.7L just had a couple codes arrive on