2002 won't start

[skrepsz]

This is my first post but I use the fourm for info all the time. Here is whats up the truck runs fine but for the past month it would at times not start just cranks no tack thought it was the cps. it would sit a little while crank it a few times then it would start seamed to be a hot start proplem. so the other day it would not start at all so i changed the cps but still nothing just cranks and no tack...I will try to check codes tomorrow....any ideas....

[vitalidle]

I don't think the tac will move on an 02. Yeah check for codes and post up what you get so the Tech guys can help ya out. Maybe its a fuel related problem, but start with the codes first.

[skrepsz]

checked with code reader no codes

[SCUFFY828]

check fuel pressure ,no codes alot of times means it could be a fuel pressure concern, but no rpms signal mkes me wonder if you have another problem, does the wait to start light come on

[skrepsz]

yes the wait to start light comes on truck just cranks.......should I check the oil level in the hpor.....

[bigcountrysg]

Have you checked the oil level, low oil level will cause this. Vital Idle I know on my 02 the tach don't move until it starts up. What is the voltage in the batteries. I believe you need 10.5 volts in order for the PCM to work. If you have low battery voltage the truck will crank but will not fire. If you are not pulling any codes you may need to do the old school trouble shooting. Grab a volt meter and start checking voltage at the batteries, the starter, check the voltage at the batteries while cranking, check the voltage at the glow plug relay as well. My brother had an 02 and when the Glow Plug Relay went out on his truck he could crank it all day and it would not start. I would check out all those things then go from there.

[SCUFFY828]

yes check the oil in the reservoir ,if its not full that could be part of your problem ,like big country said ,oil level and quality of oil could be the cause of no oil in the reservior ,if its ful ,move on to batery voltage and other checks

[skrepsz]

ok I thought I would start with the elect stuff....bat 12.59. 10.3-10.6 when cranking have the truck on charger now.....gloplug relay 12.59 one side .01-.03 on the other side with key on....with key in start position 12.59 hot side
0.11 on the other is this the problem?

[bigcountrysg]

I have never done these tests myself so I do not know the results you should get at the glow plug relay. As for the battery voltage I would wait before you make a determination. When you have a fully charged batteries then go back out and redo the checks and see what you have. Let us know the results of the checks after you have a fully charged batteries.

[vitalidle]

Originally Posted by skrepsz

ok I thought I would start with the elect stuff....bat 12.59. 10.3-10.6 when cranking have the truck on charger now.....gloplug relay 12.59 one side .01-.03 on the other side with key on....with key in start position 12.59 hot side
0.11 on the other is this the problem?

Sounds like your relay is bad. With the key on you should have 12.5 volts on the opposite large post of the hot side connected to the battery. It should stay hot for 90 seconds or more.