Question about 2003 Chevrolet Silverado 2500HD

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DRINING 55 MPH MOTOR STARTS TO MISFIRE AND RUN VERY ROUGH. WILL NOT IDLE. SMALL TICKING IN MOTOR. I WAS TOLD POSSIBLE TIMING CHAIN OR CAM SENSOR????

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Should have On Board Diagnostic's, Check owners manual for procedure & codes

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I have a 2007 jeep patriot. It stalled at stop sign started ran rough. Parked came back drove it home ran u- scan code p0017 replaced crank and cam sensors still runs rough changed plugs were bad. I was...


code p0017 refers to crank/ cam oosition sensor bank 1 sensor B -correlation ===causes --wiring--CKP sensor--CMP sensor--mechanical fault.
It also refers to control modules, cooling fan--no signal===causes -- wiring--ECM.
If it has a timing chain then the the advice that it will not be the chain is good. So I suggest checking out the cam/ crank sensors and wiring

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1995 saturn sl2 ticking noise when accelerating


these are known for carbon build up on the valves that cause several problems.this could be the problem as the carbon can cause the valves to stick a bit in the valve guides while its running and show up as a ticking noise with the gas applied.have the top end service done which cleans the fuel system injectors and any carbon build up on the back of the valves.if this gets bad enough it can cause the cam holders to break locking up the motor if the piston hits the valve.another thing to check is oil pressure and the lifters may be worn to the point that they need replacing.check the cam lobes as well if worn these can cause a ticking noise on acceleration.

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Just had remanufactured engine installed in my 04 lincoln Aviator - due to a broken timing chain by Pro-Teck auto in lakeville, MN. Egine light went on. Told by Pro tech auto that I needed to replace my #7...


Hey Doug. I would change the cam sensor and see it that takes your light on. The misfire may errase with a new cam sensor. I would hold off on the crank, until I changed the cam sensor. If it still runs rough, then maybe try the crank sensor. It is possible they didn't gap the #8 plug right or it was a bad plug. I would try the cam Doug. I would hold off on the crank.

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2007 Ford F-250, 5.4 Engine-Missing, running very rough at idle-very low idle. Engine codes P0011, P0022, P0171, P0300, P0305, P0307, P0316, P2198.


Hello, There is an extended Warranty for "Cam Phasers". I want to say 7 Years and 90,000 Miles. But some of the repairs are on a case by case basis. Years 2004-2008 were affected.

I will tell you what your Codes mean.p0011 and p0022 are both for the Camshaft position sensors. One side is overadvanced and the other is retarded. Code p 0171 is an O2 sensor, Code 0300 is random misfiring, Codes p0305 and 0307 are the #5 and #7 cylinder misfires. Code p0316 is a general misfire when starting up, and finally the p2198 is a rich condition O2 sensor on bank2 sensor 1.

All of these make sense when the Cam on bank 1 is over advanced you will run lean and the Cam on bank 2 is retarded, you will run rich. The misfires are from incorrect timing and affected fuel mix.

There are "cheater tools" for this repair which will cut Labor costs in half. Check the Web for Mac tools, Snap-on, and so forth. The cheater works by pressing down on the internal chain tensioner to make slack in the timing chain. You take off the valve covers and unbolt the Cam (Phaser) gear and sneak it out through the valve cover opening. The CAM PHASERS cost $300 to $500 apiece.

A normal repair without the cheater involves removing the front of the motor up to the heads and still requires removing the valve covers.

I hope my solution is very helpful to you, at least you know why you are getting the Codes you are reading.

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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.

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1998 Dodge Intrepid 2.7 -- After running for 30 minutes, the car starts and runs rough. Driving up to temperature it runs fine. After sitting for 15 minutes or so, when starting it runs rough and will...


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High idle and rough idle.


Sounds like a serious vacuum leak to me. Can you hear any air rushing under the hood when it's idling? Wiggle all your hoses around while its running and listen for a hiss. If it was a sensor his scanner should have picked it up, and if the fuel pump was no good, it wouldn't run at all. Aim a timing light at the crank mark. If it's jumping back and forth, your timing chain has jumped.

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