Engine stalls under load
03-10-2024, 02:57 PM
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Engine stalls under load
89 5.7 iroc / 57k mile - wife surprised me w one that looks great. Owner thought the driving issue was a fuel filter or pump.
idles fine, sounds fine w throttle while in park. Under a load it runs terrible. No power when u mash the gas and it stalls. I replaced fuel filter, no change. Inspected MAF, it looks new (Delphi brand). Just curious if anyone has ideas before I find a shop.
idles fine, sounds fine w throttle while in park. Under a load it runs terrible. No power when u mash the gas and it stalls. I replaced fuel filter, no change. Inspected MAF, it looks new (Delphi brand). Just curious if anyone has ideas before I find a shop.
03-10-2024, 05:14 PM
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Car: '90 Formula '88 GTA
Engine: 305 TPI 350 TPI
Transmission: T5 700R4
Axle/Gears: 3.42 10 Bolt 3.27 9 bolt
Re: Engine stalls under load
probably fuel pump - easy to check pressure with a schrader valve gauge
03-10-2024, 05:36 PM
#4
Re: Engine stalls under load
Agree it sounds fuel related.... A clogged fuel pump inlet for me resulted in similar symptoms....mine had rust pickup from the tank...
Don't expect a Delphi maf to be a good thing though... They have known issues... Mostly that they don't read correctly at low airflow... I had to fake mine out to get the car to run right ... Ended up finding an original Bosch... Greatly improved the performance....
Don't expect a Delphi maf to be a good thing though... They have known issues... Mostly that they don't read correctly at low airflow... I had to fake mine out to get the car to run right ... Ended up finding an original Bosch... Greatly improved the performance....
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