1990 Toyota pickup almost dies while idling?

Question

Its the 1990 toyota pickup, 2.4L if I'm not mistaken with fuel injection. When i slow down to a stop or especially in park the engine seems to idle low and sputter, then rev up again then die off. Air filter is clean.

Answer 1

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don't adjust the idle on this. you will end up w/idle fluctuation compounding the issue when the ecu tries to correct. besides, you never just up and adjust an engine to a faulty condition.

a few things that can cause this. per book.

idle air control valve, mass air flow meter, the IAC is found within the MAF meter, http://www.ncttora.com/fsm/1993/engine/33volumeai....

those can be cleaned.

egr issue, http://www.ncttora.com/fsm/1993/engine/18egrsyste....

or dirty injectors.

but you may want to pull codes on this. even if there's no CEL-check engine light lit. you don't need a scanner tool. just a jumper wire and your keys. here's how, http://www.ncttora.com/fsm/1993/engine/26diagnosi....

there are other things that maybe in play here. such as the TPS-throttle position sensor. but you would defiantly have CEL and a code stored for that.

also, just for gp, check the fuel filters. and check for a vacuum leak(on the hose-cracked or loose) on the fuel regulator. check for a fuel leak there as well.

tip; if this slowly came on, then it's very possible this just need to be cleaned. otherwise, likely a component issue.

if you're unsure of any of this, do make sure you take it to a reputable ASE shop or the dealer for diagnosis.

good luck. owner 93 toy pu V6, 88 22/20RE hybrid.

Source(s): all links sourced via the genuine FSM for this. online, http://www.ncttora.com/fsm/1993/engine/26diagnosi.... for dl, http://www.ncttora.com/fsm/1993/1993.zip parent pg, http://www.ncttora.com/fsm/ all FREE!

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Answer 2

Try to get someone to turn UP THE IDLE. Usually only one screw involved.

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