ef issues and clarifications

[halo2thit]

so i have a 91 hatch 5 speed d15b1 and it is dpfi. at the moment my car idles up and down erratically when it is warmed up between. now im positive that my car does not have a fast idle thermal valve (fitv) but am i right? cause i know that is the cause of alot of idle issues with honda.

yes i checked my iacv, cleaned it and put it back on and nothing new.

p.s. it seems that if i put some load on the car (radio, headlights, etc.) i do not notice it idling differently but it does not jump up and down in idle.

thanks for your help you guys

[sdlEF]

check your alternator. sounds like your alternator is going out. use a voltmeter and check the voltage from the battery while car is running. i cant really remember but if it drops below 13.5 volts than its going out. this lil numbers i keep forgetting

[halo2thit]

i thought the same thing, but you think a bad alternator could cause some bad idling? thanks for your input man, i appreciate it.

[halo2thit]

bump for help,

first was dpfi doesnt have a fitv correct?

second, would a bad tps cause a irregular idle bouncing,

third is every once in a while my cel comes on and the codes are 1, 7, 14,
i know what the codes are, (o2 sensor, tps sensor, iacv) would the tps cause this all, and when i turn the car off then back on the cel disappears

i feel like im getting no where lol

[halo2thit]

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