HyrulianHero

My manual 89' Legend has been revving sometimes throughout the whole drive or just at certain times while driving and it does it without me pushing on the gas especially when I'm in neutral. This makes my car run through gas way to fast and it's a financial pain! What should be done about this? Is it the engine coolant sensor needing to be replaced or something?

BIGBOY

I would try bleeding the cooling system, followed by checking for a vacuum leak/leaks.

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rion88

check for a vacuum leak first. Turn on your car and spray carb around the vacuum hoses and listen for it to rev up.

l4zy415

I'd check to see if the ECU is throwing a code.

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17" DRAG DR-11 Rims/\Matador Red Paint/\Custom CAI/\LED Bright White Dash Lights/\Kenwood KDC-X590 Excelon Mp3 Deck/\Ford Taurus Coin/Cup Holder/\2 12" Kickers/\1800 Watt Kenwood Mono Amp/\Power Acoustic Capacitor/\Clear Rear Turn Signal/\Reverse Glow Gauges/\Swapped 88' Headlights to 89'-90'/\Swapped 88' seats to 89'/\JDM Rear Chrome Trim/\JDM Clear Corner/\JDM Power Folding-Heated Mirrors/\Stromung Muffler

HyrulianHero

How do I check the ECU to see if it's throwing a code?

HyrulianHero

Also, what is this carb I should spray on the vacuum hoses? I am going to try all of this and then get it to shut up on the revving.

l4zy415

If you have a Coupe, the ECU is located on the passenger foot well. You'll need to pull back the carpet, then you'll need to remove the cover to access the ECU.

If you have a Sedan, its under the passenger seat. Place the key in the ON position (engine not running), then you should be able to see a red light blinking. Count the blinks and let us know what the code is.

If there isn't any code, where is the RPM needle staying at when neutral? Does it feel like the gas pedal is sticking?

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17" DRAG DR-11 Rims/\Matador Red Paint/\Custom CAI/\LED Bright White Dash Lights/\Kenwood KDC-X590 Excelon Mp3 Deck/\Ford Taurus Coin/Cup Holder/\2 12" Kickers/\1800 Watt Kenwood Mono Amp/\Power Acoustic Capacitor/\Clear Rear Turn Signal/\Reverse Glow Gauges/\Swapped 88' Headlights to 89'-90'/\Swapped 88' seats to 89'/\JDM Rear Chrome Trim/\JDM Clear Corner/\JDM Power Folding-Heated Mirrors/\Stromung Muffler

LegendxKillem'

I would check the pcv valve , my integra does that from time to time and I just get some brakleen and works perfect after that

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'91 L Coupe-88K-Megan M-OE Muffler-Short Ram-17' Enkei GF1-Yokohoma ES100-215/45/ZR17 Front-225/45/ZR17 Rear-Almani S7-10-Interfire C2900