Major Problem Need Help

91redgt · 10-08-2003, 02:23 PM

I have a 91 gt that is basically stock and i got a set of 4.10s installed yesterday. It drove good all day untill about 20 mins ago when i was driving and it lost all the power and cut out. Then let it set for about 10 mins and ran fine but did it again 5 mins later. Now when I go to start it, it runs for like 15 secs and cuts out. I am thinking something with the gears b/c this never happened before. Please, any suggestions would help.

billheis · 10-08-2003, 02:52 PM

I do believe its just a coincedence, did they have the battery disconnected when they did the gears. Sounds like a loose cable or something like that. Possibly coil or module giving out on you also. Of course with the new found launching power you may have jarred something loose

silver_pilate · 10-08-2003, 03:07 PM

Yeah, check battery connections first. Also might be a dying fuel pump. Does the pump still cycle when you turn the key every time? And if so, does it sound different (louder or higher) than before?

--nathan

91redgt · 10-08-2003, 03:12 PM

yeah, i think it mite be something with the fuel. I have a fuel leak and was told my sending unit could be going bad. It is pretty loud but i don't think as loud as it was. Don't know. Just took the car for a ride, and it drove fine. Maybe just a fluke, but hopefully i will find out. Thanks

silver_pilate · 10-08-2003, 03:18 PM

Here's what happened with my fuel pump. It would run great, for a while. After a good drive (usually with lots of highway cruising), the pump would overheat, crap out, and then leave me stranded. Ran fine on the highway, but at the first traffic light or the first time I slowed down, the pump would start to drop pressure. I verified this with a fuel pressure gage. When it died, it wouldn't build or hold any fuel pressure until it cooled down. I would have to let it sit for 20-30 minutes before it would run for any amount of time. Starting it up when the pump was hot resulted in it not starting at all or running for a few seconds (or a few minutes, depending on how much it cooled down) before the car stumbled, stalled, and died again.

And that was with an aftermarket pump.

So I put a new Holly in and all is well. Put a fuel pressure guage on it and see what's happening.

--nathan

10-08-2003, 02:23 PM	#1
91redgt Registered Member Join Date: Aug 2002 Posts: 31	Major Problem Need Help I have a 91 gt that is basically stock and i got a set of 4.10s installed yesterday. It drove good all day untill about 20 mins ago when i was driving and it lost all the power and cut out. Then let it set for about 10 mins and ran fine but did it again 5 mins later. Now when I go to start it, it runs for like 15 secs and cuts out. I am thinking something with the gears b/c this never happened before. Please, any suggestions would help.

10-08-2003, 02:52 PM	#2
billheis Registered Member Join Date: May 2001 Location: Fernandina Beach, FL 32034 Posts: 178	I do believe its just a coincedence, did they have the battery disconnected when they did the gears. Sounds like a loose cable or something like that. Possibly coil or module giving out on you also. Of course with the new found launching power you may have jarred something loose __________________ Bill Heiser 90 Convertable 5.0 LX, ported E7s w/ THumper valve job, TFS street, FR 65mm TB, B cam w/1.7 cobra rockers, kirban AFPR, Mac CAI, Mac Headers, off road h, 3 chamber flows, Crane ign. box, 3:73s, Art Carr AOD & 2600 converter

10-08-2003, 03:07 PM	#3
silver_pilate DURKA DURKA!! Join Date: Sep 1997 Location: Lubbock, TX...(TX panhandle) Posts: 1,418	Yeah, check battery connections first. Also might be a dying fuel pump. Does the pump still cycle when you turn the key every time? And if so, does it sound different (louder or higher) than before? --nathan __________________ '91 GT, Coast 347, 9.5:1 compression, full intake, Wolverine 1087 cam, exhaust, Keith Craft ported Windsor Jr. Irons (235 cfm intake, 195 cfm exhaust), AOD, PI 3500 converter, Lentech valve body, 3.73's (4.10's in the works), and Yokohama ES100's out back. Daily Car: '04 Infiniti G35 Sedan 6MT

10-08-2003, 03:18 PM	#5
silver_pilate DURKA DURKA!! Join Date: Sep 1997 Location: Lubbock, TX...(TX panhandle) Posts: 1,418	Here's what happened with my fuel pump. It would run great, for a while. After a good drive (usually with lots of highway cruising), the pump would overheat, crap out, and then leave me stranded. Ran fine on the highway, but at the first traffic light or the first time I slowed down, the pump would start to drop pressure. I verified this with a fuel pressure gage. When it died, it wouldn't build or hold any fuel pressure until it cooled down. I would have to let it sit for 20-30 minutes before it would run for any amount of time. Starting it up when the pump was hot resulted in it not starting at all or running for a few seconds (or a few minutes, depending on how much it cooled down) before the car stumbled, stalled, and died again. And that was with an aftermarket pump. So I put a new Holly in and all is well. Put a fuel pressure guage on it and see what's happening. --nathan __________________ '91 GT, Coast 347, 9.5:1 compression, full intake, Wolverine 1087 cam, exhaust, Keith Craft ported Windsor Jr. Irons (235 cfm intake, 195 cfm exhaust), AOD, PI 3500 converter, Lentech valve body, 3.73's (4.10's in the works), and Yokohama ES100's out back. Daily Car: '04 Infiniti G35 Sedan 6MT

10-08-2003, 03:12 PM	#4
91redgt Registered Member Join Date: Aug 2002 Posts: 31	yeah, i think it mite be something with the fuel. I have a fuel leak and was told my sending unit could be going bad. It is pretty loud but i don't think as loud as it was. Don't know. Just took the car for a ride, and it drove fine. Maybe just a fluke, but hopefully i will find out. Thanks