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2002 Pontiac Grand Am 3.4L - P0336 Code: No Start When Warm, After Replacing Crankshaft Position Sensor and EGR Valve

Model: 02 pontiac grand am 3.4 Fault Code: P0336 Posted: 2015-06-13 09:42

I've replaced both crankshaft position (CKP) sensors, the EGR valve, and the fuel pump on my 2002 Pontiac Grand Am 3.4L, but I'm still receiving a P0336 code. The vehicle won't start when warm—though it cranks, there is no engine run. I've already checked the coil packs and confirmed fuel pressure. Despite these efforts, the issue persists. I'm wondering if I missed any critical steps or if there's another underlying cause. Any advice on troubleshooting this specific P0336 fault in a 2002 Pontiac Grand Am?

Related fault codes
P0336
Comments (4)
Anonymous 2015-06-13 10:32

Why were the EGR valve and fuel pump replaced? For the crankshaft position sensor (CKP), did you replace both the block-mounted and crank-mounted sensors? Have you performed the CKP System Variation Learn Procedure? A no-start issue requires checking for spark at multiple plugs. Use a noid light to verify injector pulse. Is this vehicle equipped with an automatic transmission?

Anonymous 2015-06-13 11:12

I recently purchased this car for my daughter. The previous owner mentioned the gauge wasn't always working and replaced the EGR valve because her wife experienced stalling issues. A mechanic advised replacing it, so she did—now I've also replaced both crankshaft sensors. I haven't performed the CKP System Variation Learn Procedure before. I checked spark but didn- t use a noid light; instead, I used an HEI system. The vehicle has an automatic transmission.

Anonymous 2015-06-13 15:40

Verify spark at all plugs, confirm fuel pressure with the gauge, and use a noid light to check for injector pulse. Are there any other diagnostic trouble codes? Do you have access to an OBD2 scanner?

Anonymous 2015-06-13 18:02

Yes, I have spark and am still seeing the P0336 code. Fuel pressure reads at 50 psi and holds steady. I did not use a noid light for injector testing—instead, I used an HEI ignition system to check spark.