popping noise when cold under load

Coupe50h · 11-10-2004, 08:53 PM

Although my problem was the lower intake gaskets, or i thought, i noticed mine went away when i took off the 73mm c&l and put on a 75 pro-m, but im not sure, could be an egr problem?

GhettoPop · 11-12-2004, 10:11 AM

thanks for the replies. my o2 sensors are a yr or 2 old and should be good. my friend whos a mechanic just bought a $4000 scanner, will have to give him a call. its an amazing piece of equiptment. might just change ACT and ECT for the hell of it since they are probally original. ford parts or aftermarket will be good?

Unit 5302 · 11-12-2004, 11:01 PM

Sounds like a bad fuel injector to me. If it is, you'll likely experience the problem getting worse and starting to happen even when the engine is warm. By the way, a hard backfire is capable of destroying the catalytic converter, but I'm guessing what you have is a

"bunk ba bunk bunk" sound. Once the backfire is done, the car pulls hard?

GhettoPop · 11-15-2004, 01:36 PM

Quote:

Originally Posted by Unit 5302

Sounds like a bad fuel injector to me. If it is, you'll likely experience the problem getting worse and starting to happen even when the engine is warm. By the way, a hard backfire is capable of destroying the catalytic converter, but I'm guessing what you have is a

"bunk ba bunk bunk" sound. Once the backfire is done, the car pulls hard?

yes, pulls hard after. like i said, only occasional happens when car is very cold for a few minutes at low rpm's. dunno bout the fuel injector, i had this same problem last winter and it was gone in summer now has come back. its just a little annoying, i can live with it but wanna try to fix it. hesitation and popping sounds at low rpm's when cold, especially when you step on the gas. goes away in a few minutes. also, i dont have cats

11-10-2004, 08:53 PM	#1
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	Re: popping noise when cold under load Although my problem was the lower intake gaskets, or i thought, i noticed mine went away when i took off the 73mm c&l and put on a 75 pro-m, but im not sure, could be an egr problem? __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

11-12-2004, 10:11 AM	#2
GhettoPop Gimme a Drink! Join Date: Dec 2002 Location: NYC Posts: 694	Re: popping noise when cold under load thanks for the replies. my o2 sensors are a yr or 2 old and should be good. my friend whos a mechanic just bought a $4000 scanner, will have to give him a call. its an amazing piece of equiptment. might just change ACT and ECT for the hell of it since they are probally original. ford parts or aftermarket will be good? __________________ 1990 GT,stock T-5,K&N w/o air silencer,March underdrives,FMS wires,timing@14*,PA Perf 130amp alt,Steeda Tri-Ax Shifter,Steeda adj quadrant/clutch cable/firewall adj,Centerforce II clutch,o/r x-pipe,Magnaflow SS catback,g-load brace, subframes,Bilstein struts/shocks,Autometer gauges, 136k and running strong!

11-12-2004, 11:01 PM	#3
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Re: popping noise when cold under load Sounds like a bad fuel injector to me. If it is, you'll likely experience the problem getting worse and starting to happen even when the engine is warm. By the way, a hard backfire is capable of destroying the catalytic converter, but I'm guessing what you have is a "bunk ba bunk bunk" sound. Once the backfire is done, the car pulls hard?

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