Noo fire on plug Sedona 05 have code p0337

P0337 KIA - Crankshaft Position Sensor 'A' Circuit Low Input
P0734 KIA - Fourth Gear Incorrect Ratio
P0735 KIA - Fifth Gear Incorrect Ratio
https://www.autocodes.com/p0337_kia.html https://www.autocodes.com/p0734_kia.html https://www.autocodes.com/p0735_kia.html

Most people think you only need fuel, spark, and air to get start. Mostly true, but not entirely. You have all three and still no start. The only thing you may be missing is compression. If the vehicle has more than 75000 miles on it and has never had the timing belt replaced, you may have a belt breakage.slippage issue. Perform a compression check of the cylinders and is they any are low or they are not all approximately the same compression, you may need engine work. If the timing belt slipped or is broken, you may have additional engine damage to valves/pistons as this is an interference engine. Replacement of the water pump is recommended if timing belt is replaced.

cam sensor fail can be crank sensor fail engine will run with cam sensor fail but crank it will not fire. also recheck the timing belt settings you fit the timing belt and run engine till warm then recheck the belt adjustment to make sure its in line and at recommended tightness.

https://www.autocodes.com/qa/26619/p0172-p0175-p0431-error-codes-for-kia-sedona-2004-lx

first why and how did you tighten the timing belt. if was loose should just replace the timing belt that belt runs the timing.the code po335 is your crank position sensor and it is coming up the engine is fight to keep the timing. replace the timing belt. the codes po300,po302.po303 are for a rarandom misfire. when was the last tune up. change the sparks plugs

The crankshaft position sensor (CKP) and Camshaft position sensor (CMP) work in harmony to control the spark/fuel delivery and timing. They both consist of a reluctor, or tone, ring which passes over a magnetic sensor, which generates a voltage, indicating position.

The crankshaft sensor is part of the primary ignition system and functions as the "trigger". It detects the position of the crankshaft relays that information on to the PCM or the ignition module (depending on the vehicle) to control spark timing. The Camshaft position sensor detects the position of the camshafts and relays the information to the PCM. The PCM uses the CMP signal to identify the beginning of the injector sequence. What ties these two shafts and their sensors together is the timing belt or chain. The cam and crank should be precisely timed together. If the PCM detects that the Crank and Cam signals are out of time by a specific number of degrees, this P0016 code will set.

Symptoms of a P0016 will or may include:
* Malfunction Indicator Lamp (MIL) illumination
* The engine may run but with reduced performance
* The engine may crank but not start
* The engine may exhibit a rattle near the harmonic balancer indicating the tone ring is damaged
* The engine may start and run, but poorly

Causes may include:
* Timing chain stretched, or timing belt skipped a tooth due to wear
* Misalignment of timing belt/chain
* Tone ring on crankshaft slipped/broken
* Tone ring on camshaft slipped/broken
* Bad crank sensor
* Bad cam sensor
* Damaged wiring to crank/cam sensor
* Timing belt/chain tensioner damaged

Possible Solutions:
1. First, visually inspect the cam and crank sensors and their harnesses for damage. If you notice broken/frayed wires, repair and recheck.
2. If you have access to a scope, check the cam and crank patterns. If a pattern is missing, suspect a bad sensor or a slipping tone ring. Remove the cam gear and the crankshaft harmonic balancer and inspect the tone rings for proper alignment and make sure they're not loose or damaged or that they haven't sheared the key that aligns them. If they are properly installed, replace the sensor.
3. If the signal appears normal, then check the timing chain/belt for proper alignment. If it's misaligned, check for a damaged tensioner that may have allowed the chain/belt to slip a tooth or several teeth. Also check that the belt/chain isn't stretched. Repair and recheck.

Other crank sensor codes include P0017, P0018, P0019, P0335, P0336, P0337, P0338, P0339, P0385, P0386, P0387, P0388, and P0389.

Hope helps.

have your mechanic check valve timing and test the cam and crank angle sensors also check the wiring to the coils

it is under the timing cover at the front of the engine. under the cam belt pulley

The recommended interval for changing the timing belt is in the owner's manual. Generally, this is every 60,000 miles.

Charlie

P.S. I found the data on the internet and, it is indeed 60,000 miles.

Hi..
On your problem with the Caravan.

If you Have replaced the Crank and Cam sensors. And the Code Cam/Crank Correlation sensor.
Is found.
Normally this code is present When the Timing belt or Timing Chain, Is out of time 1 or more dents
On the timing due to Skip of the timing belt or Chain.

But don't forget check the connector at the sensors. For any damaged or corrosion on the pins.
Ok.. I hope this help to try diagnostic your car.

Thank you for use fixya.