1994 Toyota Camry

JCCSERVICES

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1994 TOYOTA CAMRY
6 CYL
2WD
AUTOMATIC
217,000 MILES

I just bought this camry and it ran great when I got it. Its carfax looked good and the previous owner had paperwork on regular maintanence and work done. Its very clean too. I bought it 3 hours from my home and drove it back on the freeway. About 15 miles from my house the car lost a lot of power and almost died. I ran a scanner on it and it said "multiple random misfire", "cylinder 2 and 4", and "heat o2 bad check". I have not changed plugs yet and I really dont have enough money to bring it in to get fixed. The car runs but scary rough. I think it is either the plugs or the ignition coils and am really hoping its not a blown head. The ignition coils are really expensive and I need 6 of them. And I dont know what heat o2 is. Please help me if you can.

Thank you,
Jake MN

4 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Check the sparkplug/compression/injector for 2/4 cylinders. HO2 sensor is the heated oxygen sensor

Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel

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Monday, November 17th, 2008 AT 12:37 AM

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3 POSTS

Checked ignition coils - good
spark in all cylinders - good
compression test results on cylinders 2, 4, 6 (not 1, 3, 5 due to lack of teeny tiny grape hands and what obd11 codes read)
cyl2= 10psi
cyl4= 30psi
cyl6= 210psi

2&4 are adjacent. I read that pressure readings would be the same in these cylinders if the gasket break is between them. It's only a 20lb. Difference. Could these test results point to anything else that could be causing my prob.

Thanks for the input,
Jake MN

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Wednesday, November 19th, 2008 AT 6:27 PM

RASMATAZ