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95 chevy lumina ls sedan v6 3.1. car is running ruff and has hesitation and chug when u give it gas. I heard that u can check what sensor may b bad buy useing a paper clip and turning the ignition key and count the flashing engine lite to c what sensor is bad

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Thats true you do that at the aldlON LINE DATA LINK CONNECTOR

Posted on May 24, 2011

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Location of PVC NOT PCV valve & Speed Sensor, PLEASE...for '93 Chevy Lumina 4dr sedan


Please define a PVC valve. I've been a Chevy guy for 45 years and have never heard of such a device.

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1988 chevy 305 hesitation or chugging


check the gasket below the carburetor it likes to deteiorate and brake look for any signs of gas they are notorius for leaking and make a truck run like ****. if you cant find your fix maybe a simple tune up is in order?

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Hesitation when I step on the gas


The tps or throttle position sensor could be getting flaky, but without a code I don't know if this is the case.

The map sensor if equipped could be giving false manifold readings.

The mass air flow sensor could be bad if so equipped.

I'd be guessing without more data.

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It is a 95 cavaler it runs ruff and has no get up and go i just changed the o2 sensor didnt seam to help and its getting bad fuel milege


Tap on the MAS and if it keeps running ruff... or will run without it then replace it as its running in the computer default mode, most likely.

Next I'd suspect/check the fuel injectors. Hows your MPG? oh yeah, bad. Run a can of Seafoam and follow the directions on how to flood and clean your own insides of your engine. This often saves that pricey injector cleaning and your age car must have one bad by now.

Signs: Runnning ruff because its leaking gas into the cylinder.

Pull all the plugs and check their color first. The most leaky one will look different -- you can google up a chart and all haynes manuals used to have them, in color, in them.

O2 sensor only comes into play after the motor has run about 3 mins. First its on computer default mode. Many sensors are not even "looked at" by the computer until its running at normal operating temp.

Jul 02, 2010 | 1996 Chevrolet Cavalier

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95 aurora wont start


did check engine light come on? if so have codes checked there are many things that could cause this issue, cam sensor, could be one issue

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'93 chevy lumina euro dies when given gas


Is yourd check engine light on? If it is, I would have the codes read first thing. If not, it could be clogged fuel filter or air filter, loose vacuum hose, or bad throttle position sensor or other sensor but the sensors or any electrical problem will set off check engine light.

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