2nd Generation Specific 1986-1992 Discussion

What Happens Below ~1500rpm?

Old 05-17-2004, 08:09 PM
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i removed my emissions.. secured all the vacuum lines, and my car STILL wont idle. i pulled the throttle cable tight, and tightened the screws.. if its at like 2k rpm its fine, runs great.. once i get below 1500, it just kinda sputters down till it dies. what happens around 1500 rpm that would do this? im sick of trying to diagnose this idle.
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Old 05-17-2004, 08:29 PM
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Vacuum leaks.
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Old 05-17-2004, 08:34 PM
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notta.. no vacuum leaks.
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Old 05-17-2004, 08:37 PM
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if the fuel pump resistor relay never dropped to 9v would it cause my car to die being 12v at that low rpm. also, can someone use a voltage tester and test the ECU wires on the fuel pump resistor relay.. see if they give 12v within a certain rpm range or is it when the tps shows your foot off the gas??? can your foot be on the gas and the fuel pump still drop to 9v?
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Old 05-17-2004, 09:02 PM
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Ive seen this time and time again, and every single time its been vacuum leaks. Go over your engine very thoroughly.
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Old 05-18-2004, 12:47 AM
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intake gasket?
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