Backfire Shifting into 5th..thoughts???

stangposse · 06-01-2003, 03:03 PM

Recently, during some high speed blasts on the freeway, I noticed that when shifting into 5th after topping out in 4th, i can hear a small backfire once i get engaged in 5th (not powershifted).

Does the computer retard timing at the 4-5 shift?? I thought the 94-95's did, but mine is a 93 LX.

Is this normal??? It happens everytime I shift into 5th at 5500 rpm.

Car runs fine, little smoke under hard acceleration, but idles perfectly and runs great. 88,000 original miles. 5spd, ram air, pulleys, 373s, offroad exhaust----basically stock.

Dark_5.0 · 06-02-2003, 10:25 AM

My guess is the car is running lean. 5th gear is the hardest on the engine, under a load and running lean would make the car pop.

06-01-2003, 03:03 PM	#1
stangposse Registered Member Join Date: May 2002 Location: Connecticut Posts: 12	Backfire Shifting into 5th..thoughts??? Recently, during some high speed blasts on the freeway, I noticed that when shifting into 5th after topping out in 4th, i can hear a small backfire once i get engaged in 5th (not powershifted). Does the computer retard timing at the 4-5 shift?? I thought the 94-95's did, but mine is a 93 LX. Is this normal??? It happens everytime I shift into 5th at 5500 rpm. Car runs fine, little smoke under hard acceleration, but idles perfectly and runs great. 88,000 original miles. 5spd, ram air, pulleys, 373s, offroad exhaust----basically stock.

06-02-2003, 10:25 AM	#2
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	My guess is the car is running lean. 5th gear is the hardest on the engine, under a load and running lean would make the car pop. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

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