Last post on Oct 01, 2013 at 4:38 PM
You are in the Chrysler PT Cruiser Maintenance & Repair
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Chrysler PT Cruiser, Auto Repair, Electrical, Engine
#14 of 23 Re: bad sensor [sllackey]
Jan 04, 2012 (5:03 am)
I have had the same problem and was told that it was the cam shaft sensor. The light comes on and stays on. Last night though it did something different. The car was cold (only 20 degrees outside) and it started up rough (no check engine light) and then the check engine light flashed 4 times and then went out. What worries me is that then the thermostat went up to the halfway mark (usually runs the 1/4-1/3 mark when warmed up). There is no way the car was warmed up that quick. It was still blowing cold air out the vents too. Anyone else have this problem?
#15 of 23 bucking jumping stalling
Jan 04, 2012 (11:27 am)
two days ago i was afraid to drive car because of performance. last night the temp got down to about 25 degrees here in tampa area. this morning check engine light was off and car ran perfectly seemed to have more power than ever. i noticed this last year when temp went down. maybe someone can use this info.
#16 of 23 Re: bucking jumping stalling [ptloser1]
Jan 13, 2012 (5:29 pm)
This problem drove me nuts for almost 2 years the warmer the weather the worse it got. No one could figure it out! Lots of money wasted.
The solution was to apply conductive cream to the spark plug wire connections at the coil and the spark plugs.
I now do this at every oil change as the cream dries over time .
Never saw the problem again.
#17 of 23 engine misfiring .
Feb 09, 2012 (12:00 pm)
I have PT Cruiser 2005 GT.. w/85k ..getting code P171, have replace TIP , MAP, both Oxygen sensors, fuel line, thermostat, spark plugs and wires. Ran BG44K also replace upper and lower
intake manifold gaskets. took to dealer they not sure either . Was told might need a valve job
but not sure. Does anyone have any ideas or thoughts. with all replaced and money spent not
getting any where.. could it be the turbo ?? thanks for any help
#18 of 23 Re: engine misfiring . [delchar34]
Feb 13, 2012 (9:12 am)
After we replaced most of the same stuff you did and it was still doing it, we took it to an auto electrics specialist. It turned out to be the timing belt. Looking back on several of the diagnostics printout, it was listed at the bottem of the list as a possible. It was a little expensive but the problem has gone away.
#19 of 23 misfiring in # 4 cyc
Jul 10, 2012 (2:35 pm)
We noticed that the check engine light stayed on and we had it checked out and they said the number 4 cyl was miss firing. We changed the plugs and checked the wires and that did not fix it so we took the car to the dealer and they said the problem was in the heads, possible cracked some placed. we have less then 100,00 on this car, why would the head crack with such less miles. Are there any recalls for this.
#20 of 23 Re: misfiring in # 4 cyc [grew]
Jul 11, 2012 (12:10 pm)
No recalls that I can find but this car is known for electrical problems. I brought my car in 2009 and I have had to replace the cam shaft and crank shaft 3 times due to the car misfiring when pushed to 2rpm. I still owe $5,500+ on the car. It is just not worth it anymore. I am ready to surrender the car to my finance company if I cant find a dealership to take it. I hate this car!~
#21 of 23 Re: 2005 pt cruiser gt misfiring and bucking [maiajoi]
Feb 09, 2013 (6:23 am)
MY 2007 PT non-turbo did the same thing at about 18K miles. It was the camshaft positioning sensor. It is a $65 part. I had it replaced under warranty. Knowing what it looks like and how easy it is to replace, I will replace it myself next time. It involved removing two screws and an electrical lead- no biggie. Do not buy after market replacements. From what I have read online, owners who have done that, got poor results. Get the part from the dealer- It is one of the cheapest and simplest fixes you can do to your PT. Good luck.
#22 of 23 Re: bad sensor [sllackey]
Sep 05, 2013 (7:36 pm)
I think most of you are right. It is the Camshaft Position Sensor. The reason if fails again after 3 to 4 months isn't related to it being aftermarket vs mopar auto parts.
There are two sensors the measure the position of the camshaft and crankshaft (they are not the same thing).
The upper sensor is the Camshaft Position Sensor and is located at the top of the engine beside the air intake box. The lower sensor is underneath the battery, battery mount and the starter. It is called the Crank Shaft Position Sensor if you don't want to take out the air box, battery, battery mount and starter to reach from the top, and if you have small enough hands, you should be able to reach it from the bottom of the car if you put it up on jack stands or ramps.
Replacing 1 alone will get you just 3-4 months of good driving. If you replace both the upper (camshaft) and lower (crankshaft) sensors at the same time they will work fine and get you several years of service.
It's the combination of the information delivered by these two sensors to the control module that helps control the fuel injection and firing of the pistons. So before you jump to an expensive fix like the timing belt. Since you can find each sensor from $25-$50 at the auto part store. Try replacing both sensors at the same time. If that doesn't work, then have the timing belt checked.
Although it sounds complicated getting to the lower sensor. It's just removing several bolts to remove each of the battery, battery mount and starter to get them out of your way. Took me about 45 minutes to replace both sensors. So far they have been running great for 2 years. Went through 3 Camshaft Position Sensors before I found out you really should replace both at the same time. Having two new sensors allows them to sync their info together better for the control module.
Hope this helps
Oct 01, 2013 (4:38 pm)
2006 PT cruiser 2.4lt checked , had code for cyl 4 misfire found oil in spark plugs holes had good spark all cylinders replaced plugs wires and valve cover gasket with valve cover off found intake cam lobes on #4 cyl worn down replaced intake cam ran fine for 30 miles , misfire back on #4 rechecked vacuum,spark kv voltage, compression170to180 all cylinders, fuel pressure good, resyncked cam/crank and reset all adaptives still have misfire, Any ideas