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Joined: Jun 2000
Posts: 494
CEG\'er
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OP
CEG\'er
Joined: Jun 2000
Posts: 494 |
Hey guys...suppose I'm in 3rd or higher gear and the RPMs are under 3,000......when I attempt to accelerate the car seems to buck pretty violently.......almost like the fuel shuts off or half the cylinders don't fire. Once it gets around 3k this stops. I check my secondaries, they're working just fine.
I'm not getting a check engine light unless I do this on purpose for an extended period of time.
I have new spark plugs, FMS wires that are 1 year old, a 1 year old coil pack, all new underhood wiring <1 year old, new Delta Pressure switch............
Any ideas??? The car seems to run fine in the upper rev range.
2000 WS6 Convertible A4 13.11 @ 107.5 with a lid, Ram Air and LTs
Gone:95 Mystique LS Young America edition V6, MTX 15.6 @ 91
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Joined: Oct 2000
Posts: 245
CEG\'er
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CEG\'er
Joined: Oct 2000
Posts: 245 |
2004 Velocity Red RX-8
*Racing Beat Intake and Exhaust
*Grand Touring Package
*Red/Black Leather
*Fender Strakes
*Rotary Accents
*Xenon HID's
*Bose
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Joined: Jul 2001
Posts: 4,168
I am Canuckian
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I am Canuckian
Joined: Jul 2001
Posts: 4,168 |
Originally posted by Art Hazebrook:
Fuel filter?
This is where I would start. Also  the cheapest.
Green 96 mystique gs 4cyl mtx
16.9 in the 1/4 mile @102500 miles
95SE in Midnight Red MTX
MSDS headers and y-pipe
SVT exhaust
SVT UIM
Optimized se TB.
Full pre 98 SVT body kit
15.741 @ 87.73mph :)
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Joined: Jun 2000
Posts: 494
CEG\'er
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OP
CEG\'er
Joined: Jun 2000
Posts: 494 |
I've replaced that already.........oh...I forgot to mention that I have 163,000 miles!!!
2000 WS6 Convertible A4 13.11 @ 107.5 with a lid, Ram Air and LTs
Gone:95 Mystique LS Young America edition V6, MTX 15.6 @ 91
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Joined: Aug 2001
Posts: 285
CEG\'er
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CEG\'er
Joined: Aug 2001
Posts: 285 |
Possible a loose or broken mount, maybe engine or tranny, somewhere along the line.
'99 Black/Tan SVT
#291 of 2760
Tinted
Mirko Splitter
Pioneer 8400MP & 3-way 6x8's
Clear corners
Custom SVT banner
A-Pillar pod with Volt, Oil Temp & Press. gauges
B&M
Diamond Blue Fogs
White HVAC
the99svttour@yahoo.com
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Joined: Jun 2000
Posts: 494
CEG\'er
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OP
CEG\'er
Joined: Jun 2000
Posts: 494 |
Nope....I replaced those as well. The issue is related directly to the rpms and cylinders not firing or fuel delivery or a combination of the two. Above 3k the engine is perfectly fine. It's when I'm at low speed in a high gear.....high load on engine.
2000 WS6 Convertible A4 13.11 @ 107.5 with a lid, Ram Air and LTs
Gone:95 Mystique LS Young America edition V6, MTX 15.6 @ 91
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Joined: Oct 2000
Posts: 245
CEG\'er
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CEG\'er
Joined: Oct 2000
Posts: 245 |
Originally posted by MystiqueSVT:
I've replaced that already.........oh...I forgot to mention that I have 163,000 miles!!!
When did you replace it??? Needs to be replaced at the minimum every 30k...
2004 Velocity Red RX-8
*Racing Beat Intake and Exhaust
*Grand Touring Package
*Red/Black Leather
*Fender Strakes
*Rotary Accents
*Xenon HID's
*Bose
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Joined: Jun 2000
Posts: 494
CEG\'er
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OP
CEG\'er
Joined: Jun 2000
Posts: 494 |
I replaced the fuel filter approxiamately 10 months ago. Once again, if it were the fuel filter I'd think that it would affect fuel delivery more at high rpms as opposed to low rpms.
How do you know if the fuel pump is going? What about the charcoal filter that resides under the spare tire well.
2000 WS6 Convertible A4 13.11 @ 107.5 with a lid, Ram Air and LTs
Gone:95 Mystique LS Young America edition V6, MTX 15.6 @ 91
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Joined: Aug 2000
Posts: 4,713
Hard-core CEG'er
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Hard-core CEG'er
Joined: Aug 2000
Posts: 4,713 |
Do you have the TH fix? My car bucked when I had a really small hole in the TH fix. Opened up the hole and the bucking was gone.
Derek
Scion xB 5-spd
Previous: 2000 Silver Frost SVT
Please share the road with cyclists.
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Joined: Sep 2001
Posts: 1,516
Hard-core CEG'er
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Hard-core CEG'er
Joined: Sep 2001
Posts: 1,516 |
Are your injectors clean? That could cause them to not deliver fuel proporly at low RPM.
Mazda 6S, V6, Speed Yellow
5 Speed, Sport package
Bose audio
Painted 'stash and HIDs!
w/Injen 1/4 14.750 @ 94.94
Former car:
99 Contour SE Sport Black MTX V6
SVT plastic...
1/4 - 15.012 @ 90.58 
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