Thread: '00 GTP Stalling and Low Fuel Pressure

You pretty much hit it on the spot with that check off list. I would definately check for VAC leaks, make sure your motor is electrically GROUNDED well, and check the induction system(throttle body, air filter, maybe deeper like into the plenum) may be gunked up. Also possibly your fuel injectors and or the entire fuel system may be clogged and dirty which could be the reason of the low fuel psi or the mechanic is just trying to make money off you. Change/check motor oil, might be gunked up also causing low oil pressure. Since the mechanic claimed low fuel psi, try the Royal purple Max fuel clean. Here's what it looks like, $12-16 compared to $300-600 or more for parts & labor a the shop for a fuel pump. May work for you, Chevron techron is great as well[IMG][/IMG]

The IAC was a good check and so was the battery terminals. Naw, I wouldn't go to the dealer for anything unless its absolutely necessary. If the battery and or the terminals are corroded then that could very well affect the cars operation. Just complete all the maintenance it may need and look over everything. Clean up or buy new battery terminals. take care of any codes you may have, if none then disconnect the terminals(which you have to do anyway) and let the car sit for a while so your PCM can reset. Check all the fluids, they may need to be changed and not just topped off. if you cant find the issue after this than let someone else take a look at it for you. oh, and it may very well just be the fuel pump

Low pressure and stalling....

Stock pump?

High miles?

Yep... You guessed it.


Pumps going. Replace it.

Just whatever from the parts store.

Some fuel pumps last the life of the car and some go before any other part dies on your car. It depends on how you maintain it. The fuel pump is just like other vital parts, must be kept clean, cool, and well fed. How do you do this...Use fresh fuel as often as you can(a station that gets a lot of business and always filling their fuel tanks with fresh fuel), use a name brand gas station and or a very reputable one bc they'll have good additives that'll take care of your fuel system(Chevron, Shell, etc.), keep gas in your tank and never let it go empty actually no where near empty bc now your fuel pump would have to work harder and its not being properly cooled, use Royal purple Max fuel clean/Chevron Techron, etc. additives which will keep your fuel from going stale if sitting to long and it'll keep the whole system clean when in use, avoid short trips all the time but if that's all you have to do then every now and then just take a nice lil drive to get that fuel pump a lil work out while knocking off some of the carbon build up bc the last thing a motor wants is not to be driven. I could keep going but if these are things you've been doing and it turns out to be the fuel pump anyway then just continue to practice these steps on your new fuel pump and it'll last you another 100k miles or more

For sure.....