O/T 97 ZJ won't stay running until at op temp - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 12-02-2005, 07:29 PM Thread Starter
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O/T 97 ZJ won\'t stay running until at op temp

wifes 97 ZJ 4.0L won't stay running unless you keep your foot on the gas until it warms up any suggestions?
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post #2 of (permalink) Old 12-02-2005, 08:40 PM
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Re: O/T 97 ZJ won\'t stay running until at op temp

Check for vacuum leaks.
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post #3 of (permalink) Old 12-02-2005, 09:50 PM
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Re: O/T 97 ZJ won\'t stay running until at op temp

Some items to check: Remove and clean TB with TB cleaner, removed electrical controls before cleaning>> It sounds like you may have a bad temp sensor, if this is bad the computer thinks the engine is hot and leans out the fuel mixture when it should send a rich mixture....TPS may be bad. as previous post noted look for bad vacuum connections.
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