Question about 1991 Jeep Wrangler

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Any tips for why i would have a high(fast)2,500-3000 rpm's idle after changing water pump on a 91 wrangler?

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You may have knocked off a vaccum line , or forgot to put one back on, check all electrical connections, also make sure the coolant temp sensor is hooked up.heres a couple of diagrams to help you locate sensors i circled and check vaccum lines, ones for a 2.5 and a 4.0 engine. hope this helps.any tips for why i would have a - 5be5f70.gif49adff6.gif

Posted on Feb 06, 2010

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1997 Saturn SL-1 idles fast


The ECM maybe stuck, disconnect the battery and wait 5 mins then reconnect.

Other things that normal cause high rpm at idle:
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If obtaining heat from your heater seems to take Forever, the thermostat could be weak. This would coincide with the engine continuing at a high RPM longer because it is not warming up.

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