having trouble driving long distances, car will bog

[VinceSez]

Alright I don't know what's wrong with my car. If I were to drive a long distance in the heat, my car will begin to bog like it's running out of gas until I pull over and turn off the engine. Whenever this happens I I just turn off my car for a minute and then start it back up, and it's good to go for a short distance, or a couple of miles. In the cold it'll take a while for this to happen. I'm assuming this has something to do with my fuel? I'm replacing my fuel filter this weekend to see if it helps. Does anyone know what could be the issue? I'm also adding a full can of seafoam through the gas tank to see if that helps any.

[gumby74]

Man that is wierd. Replace the fuel filter, seafoam, and also check your air filter, distributor cap and rotor. What kind of fuel mileage are you getting?

Oh snap, I just thought of something. Does you car have all the emmissions intact? The aicripqt pipe may need to be cleaned out as well.

[180fan]

Does it do that in the cooler night time or just in the hot day time?

[VinceSez]

well it'll happen sooner in the hot day time, and it'll take a while for the problem to occur at night since it isn't as hot out.

[madrift]

ha that happend to my first s 14.not 100% sure but i bet its the catylitic converters. and problly need new o2 sensors as welldose it get real hot on the drivers side floor? and how dose it rev up. dose it go all the way to the top rpms?

[wannaS13]

my sr did the same thing and it was my fpr was shot. put a adj. regulator with a gauge and it read 90lbs so you may wanna check that

[180fan]

I'm more inclined to believe it's an fpr issue, possibly some electronics getting toasted hot and causing enough of a change in their signal to make your car bog. A few sensors that will be able to make your car bog out - tps, cts, and the mafs. something heat related can cause weird readings across any of those sensors, if the problem is electrical.

First though, I'd go after the fpr. A fuel pressure tester should be sufficient to rule this one out. Also are you running the tank near empty by any chance or have you replaced the fuel pump recently or heard any strange sounds from the back?

The TPS should be the easiest to knock off the list. A simple calibration and a test from closed to wot should be able to tell you if that sensor is working or not.

The cts is something that, if not already changed, should since there tends to be a significant amount of buildup on this sensor after just a couple years of coolant circulating.

The mafs gets tricky...Save this one for last.