Question about 1991 Chevrolet S-10

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Just passed emissions test in Texas. A day later I am having a problem when giving it the gas, it has a sluggish problem under load, but idles good. Check TPS, , MAP, and temp sensors. Vacuum lines OK.

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Check for water in gas, with a lot of rain you can get bad gas at the gas station. Add dry/gas or good fuel injector cleaner.

Posted on Jul 20, 2009

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Posted on Jan 02, 2017

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There are procedures for adjusting the idle mixture and speed.
I would start with those. Perhaps that resllve both the idle issue and the emissions issue. See procedures at the link below.
Repair Guides Idle Speed And Mixture Idle Speed AutoZone com

If the car still fails the test after there adjustments, please post the test results.

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Having trouble getting truck to pass emissions hc`s high at idle replaced cap,rotor, wires and plugs


Try setting the timing several degrees less that what it calls for. The car may run a little sluggish, but it might have a better chance of passing. You can move it back where it belongs after the test.

Mar 03, 2010 | 1978 Chevrolet C1500

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1993 Grand Jeep Cherokee has fluctuating High emissions


everthing effects the reading. pedal position, rpm load engine temp. air temp. all that stuff you added was just a waste of time and money. What you should of done wa diagnosed it correctly so your not cheating an emission test. Since barley failed the first time I would of recommended a tunup if not done in 40,000 miles. I would have looked at the scanner data to see if the inputs were correct. Iwould have serviced the oil if its been awhile. If everything checked out i would of recommended a catalytic converter. But there are 3 test to determine if the cat is dead we do first. If your car was barley failing and you needed a tunup and the cat was still good the need for a tuneup could toast the cat within a couple weeks.

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Emissions test comes up not ready - can't pass inspection


Under the hood, there is a fuse block. I believe it is on the driver's side of your vehicle. Open that box, and pull the "ECU" fuse. Leave the fuse out for at least 5 minutes. Put the fuse back in, start the car, and let it idle for at least another 5 minutes. Do not drive the car, touch the gas, or even look at the gas pedal for these 5 minutes, as the ECU is remapping itself. This will properly reset the ecu and clear the codes. After this you may drive the car.

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My car just failed smog emissions test, had high nox count, at 15 miles about double max allowed, at 25 mit iles per hour, triple max allowed. The car is a 91 plymouth voyager.During the test it smoked...


i would put a good tank of gas in the system. like 93 super.drive the car for about 1 week or at least 100 miles. i would also go to a good auto parts store.u should be able to buy a bottle of engine cleaner to pass the smog test.also when u bring the car in for the inspection.take it for a rideand get it nice and warmed up.

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ASM 2525 NO ppm TAILPIPE EMISSIONS failure


have you had the the engine codes pulled and reset?
and if so what are your engine codes?
i dont know of any car that will pass emissions test with the engine light on.
we cure your trouble that caused your engine light to come on and you will pass your test.
later
paul

Nov 24, 2008 | 2002 Toyota Sienna

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SMOG TEST


If it was originally intended for Texas, it's probably been made as a 49-state-compliant vehicle (CA has stricter emissions). To pass in CA, you may need some new parts for the truck in order to get it to pass. Or you may find that the best course of action is to sell the truck and buy a CA-emissions car.

The CA DMV may well have information available on how to get non-CA-compliant cars to pass the CA emissions testing.

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