Quote:
Originally Posted by Tech II
Like MT-2500 said, all that work without doing diagnosis first?
As he stated, are you getting spark at all the plugs?
Check fuel pressure with a gauge....should be in excess of 60psi....
Make sure there is no air leak between the MAF and the throttle body.......try taking the IAT sensor out of the snorkle...leave it hanging and attached to the harness....with a can of carb cleaner and the long red extension hose attached, stick the extension in the hole where the sensor was......seal the hold with a rag so no air gets in(this gives you a good MAF reading).......open the throttle plate manually......give a few sprays, release throttle plate....wait 30 seconds.....now have someone crank the vehicle while you spray(keep that hole sealed)......if the car starts or almost starts, you have a fuel delivery problem......if it starts and runs......gets to normal operating temp, then shut it off.....reinsert sensor.....if vehicle starts warm, you may have a borderline fuel pump(55-60 psi).....
Do you have a scan tool or a code reader?
One other thing that bothers me, is before this happened, you had no heat.....when the vehicle is cold, remove the radiator cap.....is radiator full? Was the reservoir full? If you are low on coolant, need to find that leak.....
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Sorry I didnt explain all my diagnostics before I posted my question. The vehicle is getting fuel to the spider injector but thats as far as it goes. The fuel is not being released out of the injectors from the spider module. This is what makes me believe its the computer and or maybe the ignition control module, which I am going to replace this weekend. I have not checked the antifreeze because I never ran into a vehicle that didnt start because of low coolant so I didnt bother. Anything is possible though I guess. I do not have a fuel pressure tester and am not inclined to spend too much more money on this truck, already into it 400 bucks and no luck. The junk yard is not an option it is a nice truck when its running. The problem is something stupid and simple I'm not finding. again thank you for your replies. also want to add my father inlaw said his buddy had the same problem with his tahoe, they replaced the battery and it fired right up, naturally I thought he was full of it. could this be possible?, the battery in it is almost only a year old and holds a charge so I dont know.