Need help frustrating problem!

[Tristansgn]

So I will be driving my car typically on a hot day when it will die on me. I usually have time to pull of somewhere on the side of the road. My car will not start back up unless you let it sit for about an hour or so. I'm assuming it's fuel related because I still have spark. The car will shut off like a tap, no stumbling usually no warning signs,I have been able to save it sometimes if I give it a bit of gas if it starts to hesitate but if I'm stuck in traffic on a hot days don't want to sit and power brake it at a light...any ideas? I'm sitting in it right now...dead

 

[pacecarta]

if you have a fuel pressure gauge see what it says
turn key off then on and it should run for a few seconds , you need to turn key back off for atleast ten seconds to get another prime cycle
did you hear the pump run? if not it could be the fuel relay or pump
bypass relays ...
unplug the connector from the hood lamp and connect that wire to the pump prime connector behind the alternator by the ac lines
if it runs the fuel relay on fender is not working(might be relay bad or the ground to it)
if it still doesnt run ...if pump is hotwired could be the hotwire relay, disconnect it by the tank and plug tank back to stock harness
if it runs hotwire relay is bad (or fuse to hotwire popped)
if it still doesnt run with the prime jumped then the pump is probably done

 

[Tristansgn]

Sweet. Little update, I let it sit for 10 min, started it up and it drove 1 mile...still trying to make it home. I could hear a little whine sound from under the hood (it think) and then it shut off again. Maybe in 10 min, I can make it home!

 

[broke]

You gotta 340 fuel pump in it with a stock return line? Or is your downpipe almost on your return line where it usually is really close to the frame? Sounds like vapor lock.

 

[RmvBfrFlght]

There are some on another forum that are having a similar issue. The fuel is boiling at the inlet to the pump causing a loss of fuel pressure. A quick fix is to add more fuel from a gas station. This cools off the fuel in the tank and prevents it from boiling again for another 45 - 50 minutes.

Some have fixed it by insulating the fuel lines where they run close to the exhaust in the engine compartment, along with using a Bosch or Walbro fuel pump (Airtex and the AcDelco chinese made were the previous pumps).

RemoveBeforeFlight

 

[Tristansgn]

Thanks for the input, seems like a simple fix, I'll post an update when I get things worked out!

 

[Nick Micale]

..... My car will not start back up unless you let it sit for about an hour or so. I'm assuming it's fuel related because I still have spark. The car will shut off like a tap, no stumbling usually no warning signs........

The symptoms you describe are typical for an in-tank pump going bad.

In the 1990's when GM and others went to in-pumps in various models this was a common problem especially in the hot summer weather. When the pump cools down it will run again, but at one point, it will stop forever!

The pumps generate lots of heat when running which is why it is not good to let the fuel level get too low.

 

[tzque]

I started having the same problem . Its the stock pump failing . For me it started at half a tank . I would not continue to push your luck
Time for a new pump

 

[Tristansgn]

Sounds like great advice! I haven't had a problem since that day, but haven't really driven it much in the heat because it's starting to cool down. Car doesn't have a Hotwire kit either so I think I'll order one with the new fuel pump!