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05-18-2008, 09:09 AM
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#1 (permalink) | |||||
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Registered User
Join Date: Feb 2008
Posts: 139
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truck hesitates and back fires 22re
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05-18-2008, 09:22 AM
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#2 (permalink) | |
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Registered User
Join Date: Mar 2008
Location: @ work somewhere between Walla Walla, WA and Lewiston, ID
Posts: 10,985
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It sounds like you're running lean off idle.
Not 100% sure if this would cause your problem but the 20r is ~2200cc and the 22R/RE is ~2400 cc's. Considering the EFI on the 90 would be programmed to deliver fuel at a rate for the larger engine, there is a large possibility that your problem is there. You would have to at least recalibrate the air-fuel meter for the lesser air-flow requirements of the 20r- probably relieve some of the tension on the spring inside the afm so it opens more easily. And definitely make sure the timing is set properly.
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05-18-2008, 09:55 AM
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#3 (permalink) |
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Registered User
Join Date: Feb 2008
Posts: 139
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thanks for the info man but i used a 22r not a 20r but ill check the afm to make shure
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05-18-2008, 10:14 AM
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#4 (permalink) | |
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Registered User
Join Date: Mar 2008
Location: @ work somewhere between Walla Walla, WA and Lewiston, ID
Posts: 10,985
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doh! sorry. check the valve adjustment, vacuum leaks, TPS too just to be sure.
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05-18-2008, 02:46 PM
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#5 (permalink) |
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Registered User
Join Date: Feb 2008
Posts: 139
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ok thanks man i know my tps is bad cause it revs up and down
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05-18-2008, 03:09 PM
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#6 (permalink) | |
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Registered User
Join Date: Mar 2008
Location: @ work somewhere between Walla Walla, WA and Lewiston, ID
Posts: 10,985
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fluctuating engine speeds does not necessarily mean a bad TPS.
It could be a vacuum leak, O2 sensor, coolant temp sensor...
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