greetings ... tried to push my 99 eldo to the limit with low gas... it ran out of gas and fried my fuel pump. I had my mechanic replace it with an ebay part, sending unit and fuel pump, all in one. The problem with the car is that it surges a bit at idle, and if you hold the throttle steady in a certain range of movement, the vehicle will buck (hesitate, as if there's a problem with vacuum/fuel/gas/spark).
note: one of the things I did while the car was down was remove the MAF meter and clean it with CRC electrical cleaner. Upon reinstalling it, I noticed a hairline crack on the outside of the electrical connector portion of the plug (square area). I'm wondering if this will cause my issue. There's no check engine light on, however, and the vehicle has gone through a full cycle.
my mechanic doesn't think it's the fuel pump, as it either delivers fuel or it doesn't. i'm thinking there's a fuel pressure regulator in play here. the frustrating thing it no check engine light, so i'm unable to narrow it down. I had a similar issue with a Dodge Ram cummins diesel truck, it turned out to be the throttle position sensor, easy fix, is that a possibility here?
another thought (stay with me lol) ... the vehicle did have a traction control issue, the vehicle would buck like this from a standstill, only. I turned the TC off.
and finally, to make it a complete puzzle... it didn't buck like this before the pump and unit were changed, however,the ignition was left on while out of gas, coasting down a looong hill on the freeway, so that pump was thoroughly fried, and i may have sucked quite a bit of debris into the fuel filter from the bottom of the gas tank. it used to idle without surging and only buck when approaching a certain range on the throttle, now it's idling rough too.
i'd like to avoid throwing fuel injector cleaner or replacing the fuel filter (if you guys don't think it's a high percentage play)that used to work on cars from the 70's and 80's. how would you play this situation?
thank you kindly, in advance..
note: one of the things I did while the car was down was remove the MAF meter and clean it with CRC electrical cleaner. Upon reinstalling it, I noticed a hairline crack on the outside of the electrical connector portion of the plug (square area). I'm wondering if this will cause my issue. There's no check engine light on, however, and the vehicle has gone through a full cycle.
my mechanic doesn't think it's the fuel pump, as it either delivers fuel or it doesn't. i'm thinking there's a fuel pressure regulator in play here. the frustrating thing it no check engine light, so i'm unable to narrow it down. I had a similar issue with a Dodge Ram cummins diesel truck, it turned out to be the throttle position sensor, easy fix, is that a possibility here?
another thought (stay with me lol) ... the vehicle did have a traction control issue, the vehicle would buck like this from a standstill, only. I turned the TC off.
and finally, to make it a complete puzzle... it didn't buck like this before the pump and unit were changed, however,the ignition was left on while out of gas, coasting down a looong hill on the freeway, so that pump was thoroughly fried, and i may have sucked quite a bit of debris into the fuel filter from the bottom of the gas tank. it used to idle without surging and only buck when approaching a certain range on the throttle, now it's idling rough too.
i'd like to avoid throwing fuel injector cleaner or replacing the fuel filter (if you guys don't think it's a high percentage play)that used to work on cars from the 70's and 80's. how would you play this situation?
thank you kindly, in advance..
