1995 Dodge Intrepid Won't Fire

[kpwang]

3.3 L 125K miles. Occasional non-start & occasional cut-off at speed. Replaced camshaft location sensor. Replaced crankshaft location sensor. Now, won't start at all. Turns over strongly.

[jdl]

Originally Posted by kpwang

3.3 L 125K miles. Occasional non-start & occasional cut-off at speed. Replaced camshaft location sensor. Replaced crankshaft location sensor. Now, won't start at all. Turns over strongly.

Did you do any basic tests before you replaced anything? Were there any troublecodes? If the vehicle cranks good but won't start, have a helper crank it, while you check for spark at the plugs. If you have good spark, then check the fuel system.

[kpwang]

Has spark when cranking. There are codes but can't read them accurately. Need a scanner (don't have). Checked fuel and its ok.

[jdl]

You can't cycle the ignition switch and get some codes? What was the fuel pressure? Is there any cranking vacuum? Can you tell if the injectors are pulsing when the vehicle is cranking?

[kpwang]

I don't have answers to your questions (I'm not a skilled mechanic). I did get a series of codes that I got after turning the ignition on and off three times, then turning on again. This is the series of codes that I got three different times. 12221774154

[jdl]

You go (on/off---on/off--on). After what you replaced, you need to erase the codes, by disconnecting the negative battery cable for several seconds, then reconnect, check codes again. There should be a pause between each two digit code, 12 22 21 and so on. If there is a code 22 that would point to the CTS (coolent temp sensor), that sensor could keep your vehicle from starting. I can't tell you to replace without doing some testing. Sometimes when there is a bunch of codes, it points to a ground issue?

I've had some training, but, I'm basically a shadetree mechanic. I'm no different than yourself.

[kpwang]

Still no luck. A mechanic friend is going to bring a scanner suitable for a pre-obd-2. I'll keep you posted. Thanks for your help.

[kpwang]

Got it going. Scanner showed no camshaft signal at pcm. Removed camshaft sensor and found that cardboard spacer on the end had not been sheared off by the camshaft. Re-inserted sensor slightly deeper. Engine started, all other engine tests by scanner ok. Thanks for your interest. Hope this helps others.

[Dawezilla]

Originally Posted by kpwang

Got it going. Scanner showed no camshaft signal at pcm. Removed camshaft sensor and found that cardboard spacer on the end had not been sheared off by the camshaft. Re-inserted sensor slightly deeper. Engine started, all other engine tests by scanner ok. Thanks for your interest. Hope this helps others.

I have the same problem with a code 54. Where is the camshaft sensor?