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kcram - Pickups Host
devindakota
Once I find a way to display these codes, is there a list available on the internet of all the codes and their explanation?
I don't have any history on this vehicle as it was recently purchased for my grandson who will qualify for his dirvers license soon.
Are the Chilton type repair manuals worth purchasing or would it be a wiser decision to buy a shop manual for this specific year truck?
Thanks.
About 14 months ago I got the same code p0302 saying miss fire on cylinder #2 the dealer inspected and found nothing and cleared the code. This Sunday the check egine light came on again and I had the codes scanned again I got P0302 code,so with 38,000 mile I decided to change the spark plugs with the original type,after I was finished the codes went away and the next day the check engine light came back on with the same P0302 cose miss fire on # 2 cyclinder. The performance is fine,but I am at my witts end on what the problem might be.
I would appreciate any insight on this question.
Thanks,
Dave M.
I recently had my fuel pump replaced and I now have this DTC, P0440 Evap Sys Perf.
What should I be looking for. The truck is out of warranty and hopefully I can find a quick fix.
Thanks
kcram - Pickups Host
P-420 = Catalyst System Efficiency Below Threshold (Bank 1)
A P-420 is triggered when the PCM detects an out-of-range difference between the upstream and downstream oxygen sensors.
The engine could be suffering from a performance problem. You've changed the ignition components. What about the PCV valve and the air filter? Vacuum leaks?
You could have a bad PCM (or was it an ECM in '99?).
Regards,
Dusty
Thanks for the reply. The motor is a V6. I should know better. Like I said, both O2 sensors were replaced because the machanic mentioned what you did with the reading going into the cat and that coming out. I'll pick up a PVC valve this week and give it a shot. The air filter is almost new. Is there another filter someplace that I could change. The filter in the tank is good or so I was told. The fuel pressure is 80 PSI on the rail. He hooked up a guage close to the master cylinder by the firewall. Where is the ECM? Any idea about the, "Number 1 Bank?" Right or left side from inside the car?
Thanks again. I owe you a beer.
Gerry
Let's see. I keep forgetting, but I think Bank 1 is always the left side.
Newer Chryslers do not have an ECM per se. Engine management and transmission control is handled by the Powertrain Control Module (PCM). The PCM also includes the voltage regulation (charging circuit) circuitry.
After giving this some thought, I'm wondering if the catalytic converter is causing your problem. I've seen bad fuel injectors cause this on GM cars, but not yet on a Mopar. How many miles on tthis vehicle?
Best regards,
Dusty
Thanks again for getting back. I did change the PVC amd the hose going to it. I also replaced the small vacuum nipple just under it. I reset my "check engine light" and drove the car to work the next day. Sure enough, the light came back on. I have to say, it does run better. Can the timing be adjusted on this vehicle or is it controlled by the PCM? I was thinking that if it was a little retarded it might have an effect. I'll keep trying.
Regards,
Gerry
I'm not real sure how much help I can be since I'm still trying to find answers to my problems.
You didn't say how many miles are on the truck. Wires, cap, and rotor may cause a miss. Does it run good at other speeds? Have you changed places where you buy your gas? You may have gotten a little water with your last batch. If so, there are several products that can remove it simply by dumping it in the tank. You may also want to check out your fuel filter. Were the plugs changed before or after this started? Were the new plugs the correct ones for it and were they set correctly? I'm just asking. Mopars used to have a real problem running AC plugs even though the AC charts showed a plug to fit. I would keep with Mopar, Champion, or Bosch. You might also check around the intake for any vacuum leaks or cracked hoses. I've had some of these in the past. Do you know what PO300 and PO315 mean? If not, many auto parts stores will allow you to use their code reader and charts to find out just what they mean.
Good luck with getting it worked out.
Gerry
Gerry
As I type this message, I forgot the year of your vehicle. Just for the heck of it, check the rubber hoses going to the Evaporator Canister that's located underneath the vehicle just forward of the fuel tank. These hoses are susceptible to cracking and causing Evap faults, although your fault isn't directly related.
Also, just in case I haven't mentioned it, check the integrity of the ground straps that attach the exhaust system to the frame or body. There should be one about half way down the exhaust system just under the cab. I think there's another going from one of the exhaust manifolds to the firewall. If they are rusted away or missing, this might cause an electrical problem that affects the O2 sensors.
Check back and let me know what you find.
Regards,
Dusty
But I'm suspicious this list is for front-wheel drive cars.
I'm still looking....
Regards,
Dusty
Regards,
Dusty
I think I've found my issue. As it turns out the wiring in Dakota's can't handle those higher intensity headlights. If memory serves all of my problems seem to have started when my first headlight blew, and I decided to go with brighter light bulbs. I spoke with a Dodge service manger and apparently years ago they got a bulletin that the wirng can't handle them. He said that it surfaces in many different ways and can do damage to the computer or wiring, and sometimes just intermittent problems.
Since changing back to the OEM bulbs I haven't had any problems, although it hasn't been cold enough to check the heated mirrors.
Likely doesn't answer your problem but if you have changed to brighter lights, start by switching back for a while.
For codes
:confuse:
P0442
P1491
I think I know about the 0442, but the other I don't. can anyone answer this please.
Thanks,
Dave M. email: treedav@windstream.net
kcram - Pickups/Wagons Host
code says ignition coil # 7 primary circute. could this be my prob? the truck runs rough all the time and is sluggish. it has 360 thd kms on the engine. Anyone that can help it would be greatly appreciated.