HELP! engine sputter/miss

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Dec 20, 2003 | 04:52 PM

sdaztecs

Thread Starter

Cruising

Joined: Oct 2003

Posts: 12

Likes: 0

From: Chandler AZ

HELP! engine sputter/miss

Help, I'm at a loss. I have a 1991 coupe, 6 speed. The car has Trick Flow heads, oversized runners, a 58mm Throttle Body and a hypertech chip. This problem is new. The car runs great when it is cold. It idles great and has a ton of power through the RPM range. After it gets warm it still idles fine, but under load it misses or surges. A definite loss of power. I've changed the plugs, wires, cap and rotor, and cleaned teh injectors. Any advice would be appreciated. Thanks

Dec 20, 2003 | 04:57 PM

STL94LT1

Race Director

Joined: Jan 2002

Posts: 12,263

Likes: 86

From: O'Fallon Missouri

Re: HELP! engine sputter/miss (sdaztecs)

It may be an o2 sensor. Sounds like it starts running poorly when it goes into closed loop.

Dec 20, 2003 | 04:58 PM

sdaztecs

Thread Starter

Cruising

Joined: Oct 2003

Posts: 12

Likes: 0

From: Chandler AZ

Re: HELP! engine sputter/miss (sdaztecs)

I forgot to add the coputer shows no codes. Thanks again

Dec 20, 2003 | 06:54 PM

bogus

Team Owner

Joined: Aug 2000

Posts: 40,156

Likes: 45

From: San Pedro CA

Re: HELP! engine sputter/miss (sdaztecs)

could be the fuel pump.

Dec 21, 2003 | 10:05 AM

Mark-44

Drifting

Joined: Jul 2003

Posts: 1,257

Likes: 4

From: Granite City Illinois

Re: HELP! engine sputter/miss (bogus)

If its not low on fuel, I would suspect the fuel pump.

(1). Fill the tank
(2). Fuel filter
(3). Fuel pump relay
(4). Fuel pump

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