View Full Version : Having Problems. Need Help!
dvic406
06-16-2008, 04:54 PM
Just changed the fuel filter in my trailblazer now it wont turn over anyone got any ideas?????
hatchet669
06-16-2008, 05:00 PM
did u pull the fuel pump relay? if so did u put it back in?
is the filter connected the rite way?
accidentally hit any other lines while changing the filter?
dvic406
06-16-2008, 05:32 PM
put all the relays back and all the connections are the same. It keeps cranking but will not start like there is no fuel getting to the motor. Im clueless. having way to many problems with my truck lately. Time for something new if this is gonna be expensive
hatchet669
06-16-2008, 05:39 PM
put all the relays back and all the connections are the same. It keeps cranking but will not start like there is no fuel getting to the motor. Im clueless. having way to many problems with my truck lately. Time for something new if this is gonna be expensive
trying flipping the relay around... i cant remeber if that is the relay that can be put in backwards... but some people have done that and had problems... yes same connections but i believe the filter is a 1 way flow type...(dont quote me on that part)
dvic406
06-16-2008, 07:09 PM
tried everything I have no clue what I need to do.....Damn trucks
Fishhunter911
06-16-2008, 07:11 PM
is the "flow arrow" pointing in the right direction? Turn the truck to the on position 3 or 4 times without cranking it. Also try doing this with the gas cap off, so any air that got in the lines can be purged from the tank. Also you should be able to hear the pump run for a few seconds when you turn the key to run.
dvic406
06-17-2008, 08:18 AM
yeah the flow is heading in the right direction. Is there any sort of reset for the fuel pump like on the older mustangs.
wbsterritt
06-17-2008, 08:28 AM
You didn't say if the fuel pump was cycling or not at key-up.
dvic406
06-17-2008, 08:34 AM
no it doesnt seem to be. im not sure what is going on
wbsterritt
06-17-2008, 08:46 AM
There is a fuel pressure service connect valve (shrader type) near the fuel filter. With shop towel in hand and around the valve, carefully depress shrader valve with a small screw driver to see if there is any pressure in the system. Also, mayby first, swap the fuel relay with a "known" good one taking note of the orientation lf the terminals. Just use an identical one from the underhood bec.
dvic406
06-17-2008, 11:04 AM
i depresses that and am still not getting any pressure. Im clueless. Also and am not getting the fuel pump cycling at start up.
wmolzon
06-17-2008, 11:19 AM
i depresses that and am still not getting any pressure. Im clueless. Also and am not getting the fuel pump cycling at start up.
did you try changing the relay? sounds like you are not getting any power to the pump
dvic406
06-17-2008, 11:41 AM
the relay under the hood?
rbarrios
06-17-2008, 12:25 PM
just in case.
Im adding a picture of my fuel filter .... it may be of some use.....
http://home.earthlink.net/~rbarrios2/fuelfilter.JPG
dvic406
06-17-2008, 12:31 PM
thanks guys i am trying everything. no idea whats goig on. swapped the relay and made sure flow is in the right direction. doesnt sound like the pump is going on at start up. ive just about had it.
OK heres the latest update. Just went out and re did everything. Still the same problem. Car cranks but will not turn over. A little air came out when I depressed the schrader valve then gas. Still not hearing the pump though. I realy dont want to take this thing to the mechanic.
wbsterritt
06-17-2008, 12:49 PM
I'm e-mailing you some info on a no-start condition. You more than likely don't have a scan tool but you can work around that problem to some extent. You'll have to use some electrical trouble shooting skills. Meant to ask you as to why you changed the fuel filter to begin with-was there a problem before hand or was it just regular matainence?
dvic406
06-17-2008, 12:53 PM
It was maintenence and also was feeling a little sluggy. Had the motor changed in the truck and was not sure when it was last changed. The old filter was filled with a rust colored matter. Thank you for all of your help. U have my Email address
hatchet669
06-17-2008, 02:13 PM
i just thought of something... did u check the fuse for the fuel pump? maybe u jumped teh fuse if u put the relay in backwards.. worth a check.. otherwise i have no idea what is wrong....\
we need a smiley sayifn out of ideas
dvic406
06-17-2008, 02:13 PM
well i am about to give up. Still cant get it
wmolzon
06-17-2008, 02:16 PM
well i am about to give up. Still cant get it
stick a match in it :x :cool: and joe by a SS
dvic406
06-17-2008, 02:20 PM
gettin close to that
dvic406
06-17-2008, 06:56 PM
well I hav spent the full day trying to fix it. I am finished with no result
wbsterritt
06-18-2008, 11:56 AM
If you have a test light or a multimeter check for battery voltage at the fuel pump relay. On the relay itself is a working schematic of the relay. Find pins #30 and #87 (very small markings on the bottom of the relay.) Check for voltage at the holes in the coresponding sockets in the fuse center-both of them-first one then the other. Should be approx. 12 volts at one of them (don't remember which one, but one of them.) This can be done with ignition switch on or off-voltage is always on at this circuit. If you have battery voltage at one of them, use a jumper wire across these two sockets and carefully listen for the fuel pump to start-it will run for as long as you continue to jumper them. If pump doesn't run then it's either a bad pump or bad wiring somewhere in between. By the way, the orientation of the relay in the fuse center doesn't matter-works the same both ways. Also check fuses 10 & 28 in the underhood fuse center. These are also part of the fuel pump control circuit.
johnsonsr
06-18-2008, 12:22 PM
maybe this is dumb, but i had a similar problem when unhooked the battery. when i went to hook it back up i found that the battery was bad. might be worth hooking it up to a set of jumpers to see if its just the damn battery like mine was.
hatchet669
06-18-2008, 12:34 PM
it could just be a freak accident that something else kicked out on the vehicle like the battery... :iagree:
dvic406
06-18-2008, 03:51 PM
thanks for all the help guys. Still got nothong. Who knows. Getting a nice wife beater tan sitting outside trying to figure it out though. Sooner or later something will have to work.
the only thing is that I have a yellow top that is about 4 months old in it otherwise i would agree. Ill try jumping it and see what happens.
thanks for all the help guys. Still got nothong. Who knows. Getting a nice wife beater tan sitting outside trying to figure it out though. Sooner or later something will have to work.
the only thing is that I have a yellow top that is about 4 months old in it otherwise i would agree. Ill try jumping it and see what happens.
If the batt has enough juice to turn the engine over then it has more then enough to run the fuel pump.
First step, get a test light and make sure there is power to the fuel pump relay. Second make sure the relay is sending power when the key is on.
If it isnt sending power to the fuel pump then that is your problem. If it is sending then likely you have a bad fuel pump.