Fuel pressure regulator

1994 CHEVROLET LUMINA

145,987 MILES • 3.1L • 6 CYL • 2WD • AUTOMATIC

CXANDERS

MEMBER
2 POSTS

My mother in law has the car listed above Euro. The car cranks and runs good once it warms up to operating temperature and put in drive it stumbles and misses. I've replaced the coils TPS idle air control map sensor plugs and wires. I am thinking it could be either the fuel pressure regulator or the fuel pump. I already have a fuel pressure regulator ordered I figured it was original to the car and rubber rots. I have also read and not remembering where but the oil pressure sender or coolant temperature sensor. I'm stumped and need help. thank you

Oct 7, 2019 at 9:46 PM

SCGRANTURISMO

✓ASE Certified Mechanic
4,897 POSTS

Hello,

This could be a problem with Engine Coolant Temperature (ECT) sensor, which, believe it or not, factors into the ignition timing equation. In the diagrams down below I have included a diagram of where the electrical components are located on your vehicle. Please use it to locate and replace your vehicle's ECT and get back to us with how everything turns out and we can go from there.

Thanks,
Alex
2CarPros

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Oct 7, 2019 at 10:41 PM

CXANDERS

MEMBER
2 POSTS

Thanks for the quick reply. The electric fans turn on and off and the temperature gauge seems to be correct I used a hand held non contact temperature gun. the temperatures are really close . I am going to pick the temperature sensor up in the morning. Thanks again

Oct 7, 2019 at 11:12 PM

SCGRANTURISMO

✓ASE Certified Mechanic
4,897 POSTS

Hello again,

Please keep us informed.

Thanks,
Alex
2CarPros

Oct 8, 2019 at 11:19 PM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.