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I have a chevy Tahoe 1997 i have replace the oxigen sensor and the catalizador of the chevy i have remove it but the check engine still ligth up and the computer say it is the same oxigen sensor and it is new and it say oxigen sensor bank 1 low volt

Vehicle stalls on deceleration. Computer codes are 14 and 66.
Auto mechanics tested computer and said it was transmission solenoid. Transmission mechanics said nothing wrong with solenoid. Original mechanics tested again and found nothing. Told me to take vehicle to ford dealership and pay them to test. Prior to stalling problem, had oil leak in oil sending unit. Replaced oil sender then when test drove it began to stall when coming to stop or slowing to turn. Friend recommended changing crank sensor, this made no difference.

I have 2005 E350 Check engine light came on a smoke test was done diag. testdetected small leak in evap system. found out solenoid needs replaced. Can someone tell me where it is located on vehicle and how difficult to do myself?

Hello,

I  have service engine soon light, CarMD diagnostic tool shows OBD P0130 & P0171.  They have been on and off for about eight months now.  Every 30-40 miles the SES disapears then  shows up again after 30-40 miles. The car passed California smog test while the SES was off. The car fuel consumption is not that impacted.

Should I go ahead and fix it or just leave it? Thanks

I have a 1997 toyota camry check engine light is on, i hooked it up to computer and am geting a code for fuel/air sensor where is it located so i can replace it, or is it something that maybe i can clean ?and help would be great .

The check engine light is on still after I replaced both bank 1 & 2 O2 sensors. Is there a bad fuse that is keeping the engine light on?

When I start my car It idles around 1,000 rpms and when it tries to go past 2,000 rpms it jolts till the check engine light comes on I did a home dianostic test and i got a crankshaft postion sensor and a purge solenoid and I was wondering what part would make it do that or if it could be both parts are going bad

Yesterday the Service Engine Soon light came on in my 2004 Chevy Blazer. I took it to Goodyear this morning for a diagnostic test and asked them also to change the oil since it has been a long time (since Sept. 09) since I did that. (I know my bad). The tech changed the oil, etc. and told me that the temp sensor was causing the error and I needed a new coolant temp sensor, thermostat & gasket, radiator hoses all replaced, coolant flush, radiator cap and decarb for almost $500. I had to be to work so I made an appointment for tomorrow morning. But as I drove away the light went out. Could it be all I needed was an oil change?  Help please!

88 Bronco, Check engine light comes on and idle varies from 500 to 1500 rpm. frequently stalls acts like it wants to backfire but doesn’t. It happened a year ago but went away but is back. It did mostly through winter went away in spring but came back this spring. Acts like a short?