Question about Honda del Sol

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I have a 93 del Sol. It runs great when the temperature is warm to mild but soon as the temperature (outside) drops to low 40s and 30s it starts acting up. I will be driving on the interstate and when I get up to speed the rpms drop to zero. The car doesn't stall at all because sometimes it will drop to zero and then come back. Every now and then it will stay at zero and I have to pull off and just try to get home. I have changed the fuel filter and spark plugs and it keeps happening. At a loss at whats going on. I continue to drive it because it runs fine as long as the outdoor temperature is above 45 or so.

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Posted on Apr 14, 2017


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Posted on Jan 02, 2017

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SOURCE: rough idle on 1990 saab 900 convertible, 16V

Because the car has adaptive technology, it may take a while to reset and adjust to the new, cleaner and better conditions than those to which it had previously adapted.

Did you change the cap and rotor? if the plugs needed replacement, likely they do too

Possible other causes include:

loose or corroded connections to any electrical component you disturbed (make a checklist and tick them all off as you check them);

mis-reinstallation of any F.I. part disturbed(checklist again)

obstructed water flow through the AIC valve;

improper voltage output from the AIC valve (for LH 2.4 systems, should output 8 volt at idle, dropping as load increases; for LH 2.4.2 system output 7 volt at idle etc; testing between terminals)33 and 17 at disconnected LH connector;

possible problem with MAF.

Hope this helps


Posted on May 30, 2009

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check your wiring for dirty connections or broken wires, you may have wires that are rubbed through or connectors that are not making full contact. you will need an ohm meter and check wires for continuity. a wiring diagram will be needed.

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