Question about 2004 Mazda RX-8

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Autozone engine light diagnostic says number 1 misfire Accelerating to freeway speed when car shifts into 4 around 60 mph the check engine light flashes indicating th misfire, it would appear.

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When did the spark plugs last get changed? May need new spark plug wires.

Posted on Jul 15, 2009

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Posted on Jan 02, 2017

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Exactly what does the output Sensor the one and only speed sensor do on a 1994 Dodge Shadow, 2.5 Engine? Thank you.


Not the speed sensor , misfire ? plug , plug wire etc..... Check engine light on ? Have diagnostic's done on the vehicle ,check misfire counters on mode 6 . Do you know what this is ? If not your best bet ,take it to a qualified repair shop.

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Engine misfire and transmission sluggish


you need to repair no 1 cyl. misfire it will misfire when engine load is present. if you want to test it .push brake pedal engine running and shift into forward gear and with the other foot raise rpm to 2000rpm you will feel the misfire
hope it helps

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1996 honda odyssey - after warm up, at highway speed 65 mph and accellerating (up a hill etc) makes a vibration or engine missing. It gets steadily worse, happens at lower speeds and in lower gear as


If the engine is misfiring you would have a blinking check engine light and a fault code stored for the cylinder that is misfir9ing is that the case? If it was me I would replace the spark plug wires, they are cheap and most likely the problem.

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2005 ford escape - engine light on - flashes when accelerating and runs rough when accelerating or going up inclines


Check engine light flashing always signals Misfire,You are equipt with a COP (coil on plug),when these fail you will experience what your are experiencing,12_8_2012_6_31_47_pm.jpg

Dec 08, 2012 | 2005 Ford Escape

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Misfire going up hill at hgihway speeds in passing gear.


Hi Jon Jon, Did you also replace the spark plug? Changing all would be a good idea. Regards John

Sep 08, 2012 | Chevrolet S 10 Cars & Trucks

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I have an 88 Cavalier Z24 with 5sp man. transmission and a 2.8 V6 with cruise control. The car will not start. I parked it the previous night and went to start in the morning it cranks, I checked for...


Yes, the crank sensor is used both for spark timing and tach/shift switch. Check the connector and wiring first. The sensor is centered on the back of the engine. If that looks OK, put a new sensor in. They only cost $14 at autozone.

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Mar 25, 2011 | 1988 Chevrolet Cavalier Z24

1 Answer

Have a 2002 Outback that hesitates when it's upshifting, usually around 30-40 MPH. When accelerating to go faster at higher speeds, the Check Engine Light comes on. ( Resets by unhooking battery) The check...


its probably the knock sensor! thats what happened to mines as well... its a common problem with this car.. the part costs 100.00 and all you need to change it is a wrench! :)

the only sure way to know tho is to get a diagnostic which can be done for free at autozone or sears :)

Nov 07, 2010 | 2002 Subaru Outback

1 Answer

NEED DRIVE CYCLE FOR 2004 CRV TO RESET CAT AND O2 MONOTOR


Here is the info

NOTE: The ignition key must not be on prior to the cold start otherwise the heated oxygen sensor diagnostic may not run.

1. As soon as the engine starts, idle the engine in drive for two and a half minutes with the A/C and rear defrost on. OBDII checks oxygen sensor heater circuits, air pump and EVAP purge.

2. Turn the A/C and rear defrost off, and accelerate to 55 mph at half throttle. OBDII checks for ignition misfire, fuel trim and canister purge.

3. Hold at a steady state speed of 55 mph for three minutes.

OBDII monitors EGR, air pump, O2 sensors and canister purge.

4. Decelerate (coast down) to 20 mph without braking or depressing the clutch. OBDII checks EGR and purge functions.

5. Accelerate back to 55 to 60 mph at half throttle. OBDII checks misfire, fuel trim and purge again.

6. Hold at a steady speed of 55 to 60 mph for five minutes.

OBDII monitors catalytic converter efficiency, misfire, EGR, fuel trim, oxygen sensors and purge functions.

7. Decelerate (coast down) to a stop without braking. OBDII makes a final check of EGR and canister purge.

Oct 02, 2010 | 2004 Honda CR-V

1 Answer

2002 Lincoln Ls sputters at about 40-50 MPH


first thing is the engine light on?
these cars had problems with the on plug ign coils and if this is a misfire the comp will tell you which cyl is the problem.

Nov 19, 2008 | 2002 Lincoln LS

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