2nd Generation Specific 1986-1992 Discussion

5k Rpm Hesistation

Old 01-03-2004, 04:11 PM
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As I go driving when i begin to hit 5k rpm my car wont really rev past it. All the sudden my car bogs down and it takes an extremely long time just to get to 6 and my boost pretty much dies. It doesnt happen all the time and is pretty much intermittent but at the same time its annoying because i dont know when it will happen or what it really is. I've checked all my vacuum lines, and all my electrical connections and cant really figure out what it is. Any help would be greatly appreciated.
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Old 01-03-2004, 04:14 PM
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secondary fuel injectors? clogged cat(s) ?
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Old 01-03-2004, 04:14 PM
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Is your engine grounded good?



Your ECU grounded??



and finally the fuse block under the hood make sure it is gounded as well.
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Old 01-03-2004, 04:41 PM
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Originally Posted by pengaru' date='Jan 3 2004, 06:14 PM
secondary fuel injectors? clogged cat(s) ?
I second that.



And if this is a s5 TII, i would say the ecu going to limp mode, OMP going out. Check the codes when that happens.



C
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Old 01-03-2004, 05:04 PM
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Originally Posted by turborotor' date='Jan 3 2004, 02:41 PM
I second that.



And if this is a s5 TII, i would say the ecu going to limp mode, OMP going out. Check the codes when that happens.



C
Tis a s5. And if it were clogged cats wouldnt it do that all the time? I have no airpump and still cats, but at the same time i would think it wouldnt do it intermittently. Anyways imma go check all that stuff y'all said.
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Old 01-03-2004, 05:12 PM
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Originally Posted by Dramon_Killer' date='Jan 3 2004, 11:04 PM
Tis a s5. And if it were clogged cats wouldnt it do that all the time? I have no airpump and still cats, but at the same time i would think it wouldnt do it intermittently. Anyways imma go check all that stuff y'all said.


hrm yea i didnt see the intermittent thing, probably not the cats.



when I say secondary fuel injectors, i mean they might not be coming on for whatever reason, it can be grounds, cold solder @ ecu, or harness/connector issues... or just clogged injectors.
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Old 01-03-2004, 07:19 PM
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Just checked all my grounds, i think i have an upgraded ground system, 4 gage wire.



Gonna try and get codes now.
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Old 01-04-2004, 12:56 AM
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Do you have an FCD? You could be hitting boost cut.
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Old 01-04-2004, 02:11 AM
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Originally Posted by Dramon_Killer' date='Jan 3 2004, 07:04 PM
Tis a s5. And if it were clogged cats wouldnt it do that all the time? I have no airpump and still cats, but at the same time i would think it wouldnt do it intermittently. Anyways imma go check all that stuff y'all said.
If they arent clogged now they will be soon.
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Old 01-04-2004, 12:02 PM
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Originally Posted by RONIN FC' date='Jan 3 2004, 10:56 PM
Do you have an FCD? You could be hitting boost cut.
Nope, no FCD.
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