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Joined: Dec 2001
Posts: 3,570
Hard-core CEG\'er
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OP
Hard-core CEG\'er
Joined: Dec 2001
Posts: 3,570 |
Since the 3L install, I've had this problem but only at sustained RPM's above 3250 (e.g. freeway driving at about 80-90MPH). Only seems to happen once the car is warmed up and has been running for at least 10 minutes or so. Seems completely sporatic. No pattern at all to it. The only thing that is consistant about when this happens is that it happens above 3250RPM.
It's almost as if I'm hitting the rev limiter, thats the best way I can describe it. Car bucks twice, like two quick hickups right after each other, or as if you somehow hit your rev or speed limiter twice, then is fine for awhile. Sometimes. Sometimes it happens again right away, sometimes I can drive for a good 20 minutes before it happens again. Always 2 bucks, or hickups, and always over 3250 RPM.
I've replaced the fuel rail and injectors when I upgraded to 19# injectors, so I don't think its in the fuel delivery. Fuel filter is about 8 months old. Doesn't matter if I have a full or empty tank of gas.
I'm beginning to think maybe spark? Either plugs, wires, or the coil? Anyone else have any thoughts?
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Joined: Dec 2001
Posts: 3,570
Hard-core CEG\'er
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OP
Hard-core CEG\'er
Joined: Dec 2001
Posts: 3,570 |
btw, seems to happen more often on warmer days for some reason
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Joined: Jul 2002
Posts: 4,714
Scourge of the Master Debaters
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Scourge of the Master Debaters
Joined: Jul 2002
Posts: 4,714 |
When something similar happened to me on my non-SVT 2.5L, it turned out to be the subpar plugs that I installed. I put in Autolites two years ago and haven't had any hiccups since.
Beer is my Gatorade.
Hooray Beer.
'98 "Sport" Pacific Green
'98 E0 SVT Silver Frost
Pictures
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Joined: May 2000
Posts: 1,359
Webmaster
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Webmaster
Joined: May 2000
Posts: 1,359 |
Is your car chipped?
I had this exact thing happen with my superchip... it had come loose by an ever so slight margin.
-Lance
Lance Kinley
CEG Webmaster
95 SE, "Cassandra"
10 years!
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Joined: May 2000
Posts: 21,197
I have no life
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I have no life
Joined: May 2000
Posts: 21,197 |
Why yes he does. Superchip too. I think Lance is onto something.
-'96 SE MTX 3L
-'98 SVT 1,173 of 6,535
-'05 Mazda 6s, loaded, g/f's ride
-Need a 96-00 manual on CD? PM or email me
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Joined: Dec 2001
Posts: 3,570
Hard-core CEG\'er
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OP
Hard-core CEG\'er
Joined: Dec 2001
Posts: 3,570 |
Yup, I have a chip. I've checked that though, got 'er taped in there real good. Maybe I should try re-cleaning those contacts maybe.
I've ran a superchip for a couple years now, and only now have had these problems. Odd. I'll keep everyone posted.
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Joined: Dec 2001
Posts: 3,570
Hard-core CEG\'er
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OP
Hard-core CEG\'er
Joined: Dec 2001
Posts: 3,570 |
Sorry to restore an old thread, but for archival purposes:
This issue has been resolved. Once I went with a XCal2 and burned my tune directly to the PCM the problem dissappeared. Seems that my PCM wouldn't hold onto a plug-in style chip like SCT or SuperChips very well.
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Joined: May 2001
Posts: 215
CEG\'er
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CEG\'er
Joined: May 2001
Posts: 215 |
I have the same problem at lower rpms, and I do have a superchip.
See ad in Classifieds, Price lowered to $8,500. Buy it!
59K Miles, Original Owner, 3 liter built by Buckshot, Headers, HMS trans
Subframe Connectors, H&R's, Koni's, Rage 5.0 17's, Pole Position Tires
Removed Resonator,KKM Intake,ShoShop Y-Pipe
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