View Full Version : longer than normal crank time
03-30-2009, 08:32 PM
about 3-4 times a week I have long crank time when starting my 05 GAGT . Not sure if the fuel pump is getting week or what. my fuel pressure regulator is working fine and i just changed my fuel filter. I know Gm fuel pumps are not the greatest and know someone with a 03 ga se that had to replace theirs at 80,000 miles.
03-30-2009, 08:41 PM
is it when the car is cold or hot?
03-30-2009, 10:18 PM
that sounds like a bucket of worms.... could be a lot of things...
and possibly other things
any other symptoms? have you ran a code scanner on it?
03-30-2009, 10:22 PM
How long does it crank for?
04-01-2009, 09:22 PM
There are no codes in the pcm. I heard a pontiac montana start up the other day and it also had a long crank time as they run the 3.4 also. the car is up to temperature when it decides to do it.The car runs great other than that though. the starter seems to be working fine and the battery is not that old.I believe if it was fuel it would not run as good as it does an effect it more than a long crank time every now and then.thought maybe someone else had this problem and found the problem.
I get this prob sometimes too
So i will look into all of these things
04-03-2009, 05:02 PM
Mine does this from time to time too.
04-03-2009, 06:46 PM
I sometimes have this problem also but have no clue what it is. It isn't the starter because mine is brand new
04-14-2009, 07:20 PM
I just got back as i drove my Ga GT to florida 1150 miles one way, I had no problems with long crank time the whole trip when I stopped for gas. I was on the road for 18 hrs .the car ran like a dream. I got 29.6 mpg as one point I checked when I wasn't going thru a construction zone.
04-14-2009, 09:52 PM
I think i may know what it is. Mine will do it only when it is up to temp. It will sometimes crank crank crank fire sputter then die. If you give it gas while cranking it fires up right away. These are the symptoms of a bad Fuel Pressure Regulator. Try giving your car a little gas while it is acting up and it should help.
04-14-2009, 10:12 PM
To me it seems like the starter in the newer 3400 and 3100 turn over slower. My morther has a 97 malibu 3100 with the OEM starer, and it seems to have more of a kick to it. It has the long crank at times, but it only takes 3 seconds at most.
04-17-2009, 04:01 PM
Mine takes a bit long to start and occasionally idles rough. From some other posts with those same symptoms, I'm tempted to take a look at the IAC valve. I just need to find some info on the 3.4L V6 throttle body so I know how to go about poking at it and spray some cleaner in there w/o messing anything up. (If anybody knows where there's some pics online, that would help. I might make a quick YouTube myself if it's not too complicated.)
Also on some cars, the fuel pressure has a tendancy to drop if left alone for long enough. So if you leave it in on for a few seconds to get the line pressurized before cranking that can help too.
04-17-2009, 04:41 PM
FPR mine does that once in a great while. (grumble somthing about GM stock parts being cheap...).
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