Fuel pump issue or???
#1
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Car: 1988 camaro sc
Engine: 350 tbi swap
Transmission: 700r4
Axle/Gears: posi 3:23 swap
Fuel pump issue or???
91 camaro rs tbi 305 auto vert stock except edelbrock cat back and open element. Hmm car randomly started acting up idle goes way down and back up by itself until at running temp. Runs like poop when cold and only a little better when warm but idles great when warm in park or neutral randomly cuts out in gear and sputters and jerks. No vacuum leaks. Only code I got was 34 map sensor so I just threw a lil money at it and replaced aging sensors iac, map, coolant, also fuel filter coil distributor cap n rotor, plugs wires, egr valve, vacuum hoses. Helped a lil bit for a week or so now car getting progressively worse so I'm guessing fuel pump issue? I just stuck an inline fuel pressure gauge on it it's at 9 psi cold start and goes down if I tap the throttle I don't have much to diagnose it and I'm no mechanic but can do basic things and I live in a townhouse complex can't do much in this parking lot lol. I'll prob take it to the shop but hoping for more input thanks! I did attempt to post a link to an idle video hope it works and helps thanks! Ps in video I am not touching throttle that's the car "idling" lol
http://s1279.photobucket.com/user/w_patrick79/media/Mobile%20Uploads/trimC4D3F1A7-438E-446A-96D6-5EA11064C457_zps3bab5140.mp4.html
http://s1279.photobucket.com/user/w_patrick79/media/Mobile%20Uploads/trimC4D3F1A7-438E-446A-96D6-5EA11064C457_zps3bab5140.mp4.html
Last edited by willdog666; 05-03-2014 at 10:38 AM. Reason: Add video
#2
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Car: 1989 Chevy Camaro RS
Engine: L30 TBI 5.0L Vortec
Transmission: 700R4
Axle/Gears: Stock
91 camaro rs tbi 305 auto vert stock except edelbrock cat back and open element. Hmm car randomly started acting up idle goes way down and back up by itself until at running temp. Runs like poop when cold and only a little better when warm but idles great when warm in park or neutral randomly cuts out in gear and sputters and jerks. No vacuum leaks. Only code I got was 34 map sensor so I just threw a lil money at it and replaced aging sensors iac, map, coolant, also fuel filter coil distributor cap n rotor. Helped a lil bit for a week or so now car getting progressively worse so I'm guessing fuel pump issue? I just stuck an inline fuel pressure gauge on it it's at 9 psi cold start and goes down if I tap the throttle I don't have much to diagnose it and I live in a townhouse complex can't do much in this parking lot lol. I'll prob take it to the shop but hoping for more input thanks! I did attempt to post a link to an idle video hope it works and helps thanks! Ps in video I am not touching throttle that's the car "idling" lol
http://s1279.photobucket.com/user/w_...b5140.mp4.html
http://s1279.photobucket.com/user/w_...b5140.mp4.html
#3
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Car: 1988 camaro sc
Engine: 350 tbi swap
Transmission: 700r4
Axle/Gears: posi 3:23 swap
Re: Fuel pump issue or???
Just started it again even lower at 7 psi goes down to 6 when tapping throttle and then cuts out also fuel pump priming I can hear it but takes longer to start everyday
#5
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Car: 1988 camaro sc
Engine: 350 tbi swap
Transmission: 700r4
Axle/Gears: posi 3:23 swap
Re: Fuel pump issue or???
Hey thanks for the info man just needed a second opinion greatly appreciated
#7
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Car: 75 Beast
Engine: 383 +EBL Flash
Transmission: 700R4
Axle/Gears: 4.11 with 33"
Re: Fuel pump issue or???
When you do the R&R make sure to use SAE 30R10 submersible rated fuel hose between FP outlet and feed-through. For best results use AC-Delco FP pump kits - with correct grade hose. If you get a 'white box' kit toss FP hose into a garbage can and get the right hose from Napa or another reputable store!
//RF
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#8
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Car: 1988 camaro sc
Engine: 350 tbi swap
Transmission: 700r4
Axle/Gears: posi 3:23 swap
Re: Fuel pump issue or???
Wow great info will do I love you guys lol thanks
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