Idleing problem Honda Crx 1988 dx

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Old Dec 1, 2015 | 03:50 PM
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Icon6 Idleing problem Honda Crx 1988 dx

I bought my honda about four months ago nd love it one of the only main problems is the Car will idle up the way to 2000 rpms some times nd it rarley idles at the regular 750 rpms thank god its a stick shift cuz it only does it on idle tha guy that sold it to me said it might be the throttle position switch, i dont really know how to make sure
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Old Dec 1, 2015 | 04:25 PM
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Default Re: Idleing problem Honda Crx 1988 dx

What's your question?
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Old Dec 1, 2015 | 08:12 PM
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Default Re: Idleing problem Honda Crx 1988 dx

I'm sorry my question was how do i see if it is for sure my throttle position switch my Blinking Led Light says Code 7 Which should be it which i just figured out(Which Honda told me it would cost 80 bucks to test my Blinking light)So Am i right? or could it still be my air flow censor or something else
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Old Dec 2, 2015 | 04:58 AM
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Default Re: Idleing problem Honda Crx 1988 dx

What engine do you have? Stock?
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Old Dec 2, 2015 | 05:41 AM
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Default Re: Idleing problem Honda Crx 1988 dx

Since you have an idle problem and a TPS code, I would check the TPS sensor. It's not hard but the best way to check it would be with a digital storage oscilloscope which most people don't have. Instead of the dealer I would recommend finding a good independent repair shop, preferably one that specializes in Hondas.
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Old Dec 2, 2015 | 06:28 AM
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Default Re: Idleing problem Honda Crx 1988 dx

I can't really tell with his post. The lack of punctuation definitely is confusing. I didn't get that he had a code, but wanted to check for the code.
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Old Dec 2, 2015 | 07:10 AM
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Default Re: Idleing problem Honda Crx 1988 dx

In my 90 si the tps is just a variable resistor. If this is the setup on your 88 you can test it with a $10 multimeter and the info here; https://honda-tech.com/tech-misc-15/diy-calibrating-voltage-tps-2947986/ or here; https://honda-tech.com/honda-crx-ef-civic-1988-1991-3/official-honda-tps-wiring-calibration-thread-2830131/
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Old Dec 2, 2015 | 07:35 AM
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Default Re: Idleing problem Honda Crx 1988 dx

Originally Posted by whited
I can't really tell with his post. The lack of punctuation definitely is confusing. I didn't get that he had a code, but wanted to check for the code.
I agree about the difficulty but my best guess is that he is saying he has 7 blinks from the ECU diagnostic LED.
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Old Dec 2, 2015 | 08:02 AM
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Default Re: Idleing problem Honda Crx 1988 dx

Originally Posted by jskol
In my 90 si the tps is just a variable resistor. If this is the setup on your 88 you can test it with a $10 multimeter and the info here; https://honda-tech.com/tech-misc-15/...e-tps-2947986/ or here; https://honda-tech.com/honda-crx-ef-...hread-2830131/
Yes, it is basically a variable resistor (technically a poteniometer) and you can use a volt meter to make basic measurements. That may be all that is required in this case. However, if you are trying to find a "glitch" that only occurs for a brief range of movement in the sensor, using a DSO will make it easier to diagnose.
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Old Dec 2, 2015 | 08:05 AM
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Default Re: Idleing problem Honda Crx 1988 dx

I'd check the wiring before replacing the TPS
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Old Dec 4, 2015 | 04:20 PM
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Default Re: Idleing problem Honda Crx 1988 dx

I would clean everything down with seafoam deep creep first.
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