 2.0L stumbling |
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| Loser_Cruiser |
  Aug 10 2006, 04:46 PM
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#1
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Member  Group: Members Posts: 407 Joined: 4-April 05 From: Bellingham, WA Member No.: 3,873 Region Association: Pacific Northwest  |
my motor starts to stumble around 4000 rpms. It gets worse the higher i try to to take it but it runs pretty much fine below 4000. I just changed the fuel filter and spark plugs. Also it has pertronix installed. What could be the problem? please help me figure this out. Summer is almost over and I dont wanna put it on jack stands yet.
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| jk76.914 |
Aug 11 2006, 07:18 AM
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#2
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Senior Member Group: Members Posts: 809 Joined: 12-April 05 From: Massachusetts Member No.: 3,925 Region Association: North East States |
I think the TPS adjustment just sets for closed throttle. TPS tells the ECU the throttle is closed so it can go into overrun shutdown, if it's an ECU with that feature.... Otherwise, TPS sends pulses that tell ECU throttle is openning, as in acceleration, so it can richen....
I have a '76, and try as I may, I can't get to to run right without a 270 ohm ballast resistor in the CHT line. Supposedly, '76 did not originally have one, only '73. Anyway, does yours have the resistor? It plugs directly into the CHT, and then the other end plugs into the harness. If not, you might try it. Your old TS2 may have stabilized hot to a higher resistance, leaving you with a richer mixture than you're getting with your new one. You should try measuring your CHT in the morning- should be around 2500 ohms. After a run, try again- should be down to 50 or so. Why did you change TS2 anyway? The other thing RPM-related is your EFI breaker points in the distributor. How new are they? I suppose they could bounce around at higher RPM and cause some strange things, but it doesn't explain the fact that it runs OK when cool... Jim |
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Posts in this topic
Loser_Cruiser 2.0L stumbling Aug 10 2006, 04:46 PM
BMXerror Is is missing, or just lacking power? If it just r... Aug 10 2006, 05:36 PM Loser_Cruiser It sounds like its mis-firing. but it only happens... Aug 10 2006, 05:54 PM SGB valve adjust? Aug 10 2006, 06:57 PM Loser_Cruiser Im gonna double check the timing tonight and if th... Aug 10 2006, 07:02 PM Loser_Cruiser the timing was on. Im starting to rethink even che... Aug 11 2006, 02:41 AM Eric Taylor Valve adjust would be the first place to start for... Aug 11 2006, 03:49 AM brownaar Cylinder head temp sensor loose or malfunctioning.... Aug 11 2006, 12:10 PM Loser_Cruiser Thanks ever one for your input. Im gonna check the... Aug 11 2006, 04:05 PM
sportlicherFahrer the "ts2" as they are refering to is wha... Aug 11 2006, 05:02 PM |
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