Help ! about ready to send camry to the crusher - Toyota Nation Forum : Toyota Car and Truck Forums

davs95 · 05-27-2008, 08:22 AM

I was wondering if anyone could help me out on a 95 camry that has the 3.0 1-mz engine in it. I have a po340 camshaft code stored. I have replaced the camsaft sensor checked the wires going to the ecm, replaced the ecm, checked the engine timing belt to make sure it was in time and didn't jump a tooth. Still the car is hard to start, will start and idle at 800-1000 rpm but has a miss (no engine light on at idle) but when you try to give it gas it will go up to about 1400 and die (it also throws the po340 camshaft code) It will start right back up and idle ,but just won't go above 1400 rpm. any suggestions ????

Venom_5 · 05-27-2008, 08:45 AM

have you checked the ignition system?

davs95 · 05-27-2008, 09:04 AM

Venom_5, Thanks for the reply. I have replaced the ignitor, checked for spark at each plug , replaced the spark plugs and measured the resistance at each coil. all seems to be good. I have also gone through the fuel system. I had to put on a new pump, changed fuel filter, removed cleaned and put new o-rings on the injectors. replaced fuel psi regulator (car now has 40 psi fuel pressure.)

***ASG14*** · 05-27-2008, 10:25 AM

That happened to my mechanic right after he replaced the timing belt on a 1MZ Sienna. The timing belt was 1 tooth off causing one of the cams to be off throwing the code.

davs95 · 05-27-2008, 10:39 AM

Thanks ASG14, I was thinking that about on this one but when I pulled the covers off the marks seem to be alinged. I was noticing that on the bank closet to the radiator there looked like there could be two different marks on the back cover is there a close up picture of the timing marks somewhere that you know of ?

***ASG14*** · 05-27-2008, 11:10 AM

Eye8Pussies (SuperMod here on the forums) and I did a timing belt change on a 1MZ a couple months ago and the stupid marks were confusing. It was the notch on the metal backing between the Cam Gear and the Head. I'll see if I can get a pic later. But it does not take much off to make the car run like crap. How long as that belt been on the car?

***ASG14*** · 05-27-2008, 11:16 AM

Ok, THAT code you got is different from the one I had been thinking of.....

Download the 1MZ pdf at the following site: http://www.**********s.com/camry/

Go to page 508.

davs95 · 05-27-2008, 11:33 AM

Thanks, I followed that flow chart that you sent before that is where I got the camshaft sensor specs. It all checked out good thats why I replaced the ecm but I still have the same problem. I think I might just move the cam gear up one tooth that still sounds like the most logical thing right now plus I still have the covers off. The belt is new it is a toyota belt with the timing lines

***ASG14*** · 05-27-2008, 11:37 AM

Just weird. Let us know how it goes.

davs95 · 05-28-2008, 06:55 AM

I moved the timing marks on the cams up and back one tooth still ran the same. I had a extra tps switch so I put it on still ran the same. Any suggestions???? I did get it to go to 2500 rpm one time but as soon as I gave it more gas it died.

frenum49 · 05-28-2008, 07:43 AM

This could be a scenario where the cam and crank sensors are not syncing up. There should be a PID in the data display mode if you have or can get someone to put a scanner on the car. We had a 99 Intrepid return to the shop a month or so ago that had this same issue. In this case we had rebuilt the crappy 2.7L in the thing told the guy to come back after 500 miles or so to have the oil and filter replaced. When we pulled the cam sensor out of the engine, there was a slight amount of ferrous metals magnetized to the sensor due to the new bearings breaking in. After changing the oil and wiping the sensor clean the issue stopped. Seems that even this slight amount of very fine filings on the sensor was interfering with the signal. Anyway just thought you could try this just to see if you have any filings on your cam sensor.

davs95 · 05-28-2008, 07:57 AM

frenum49, Thanks for the reply I have pulled the cam and crank sensor and made sure the ends were clean. I just can not figure out why the thing keeps setting a camshaft sensor code. I have a factory manual and have followed the flow chart everythng checks out good from the sensors, wiring to ecm and I replaced the ecm. I'm not the best mechanic out there, but I have been an ASE master tech. for 10 years and with the cost of having to drive my diesel truck everyday till I can figure the camry out I'm about decided that there are somethings I just can't fix.

frenum49 · 05-28-2008, 08:23 AM

I guess it is possible that the new cam sensor could be bad. You may know this already but if you disconnect the sensor terminal and put an AC voltmeter across the pins on the sensor and have someone crank the engine you should be seeing some amount of voltage. These sensors produce an AC voltage signal when whatever teeth or gears pass over the pick-up. You could try this just to be sure.