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Old 08-04-2003, 03:54 PM   #1
MY99 2.5GT
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1999 Legacy 2.5GT
05 Legacy GT 06 Armada

Question Throttle Response Hesitation Question

Ive done some searching on this and couldn't find an answer.

I am wondering what will fix the throttle response problem I am having. Basically I hit the go pedal and can count almost 2 seconds between the time I hit the throttle until the engine actually revs.

I can here the throttle body open and take a big gulp but then nothing for about a second and a half to two seconds, then the revs shoot up like normal.

The ECU has been reset, and the front O2 sensor has been replaced within the last year.

Whats up with that?

This is in my Legacy with the 2.5 by the way.

Brad
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Old 08-04-2003, 04:19 PM   #2
gtwagon941
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I had a similar type of problem a year ago. I had a front crank seal leak that had leaked onto the timing belts and that was causing the problems. I hope thisn't is the case for you, but if it is be sure to replace the water pump while you're at it, cause it doesn't cost that much and if it were to go out you would have to pay the same labor costs all over again.
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Old 08-05-2003, 01:15 AM   #3
mike270
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is it an auto? If so it might be something with the tranny.

If its a manual I got no clue. Free bump for more help though.

Good Luck
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Old 08-05-2003, 01:42 AM   #4
kasio
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Here are some of my suggestions-

-the ground wires mod
-install a ProECM chip
-get a good aftermarket exhaust system
-most imporntly* have a big tune up

I know that right after I've done the 30kmiles tune up, my subbie's been running better than ever!!
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Old 08-05-2003, 01:56 AM   #5
gtwagon941
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Default "big" tune-up

What exactly is a big tune-up?
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Old 08-05-2003, 02:36 AM   #6
Ken
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New fuel filter could help too??
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Old 08-05-2003, 02:36 AM   #7
scotty305
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Tighten up the slack in your throttle cable, this will make the pedal feel more directly connected to the engine. Helped me a lot for rev-matching, especially on downshifts.

Make sure your intake filter is clean? No exhaust leaks? Spark plugs & fuel filter pretty fresh (once a year is a good idea)?

That's all I can think of for now.
-s-
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Old 08-05-2003, 08:27 AM   #8
MY99 2.5GT
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Intake filter definitely needs to be cleaned.

I have a good exhaust system and NGKs with new wires and a new coil as of last year.

I'll try replacing the fuel filter also.
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