I had my car serviced by a mechanic at my office. I have a 1995 ford explorer that I bought new. It has 108K miles on it, mostly HWY. I had been smelling anti-freeze, but not seeing any dripping. The mechanic said he knew the problem and could fix it, that it needed some seals replaced. He took off the top of the engine and replaced them. When I picked it up and drove it for 5 miles the check engine light came on. I took it back to him and he thinks now the EGR valve needs to be replaced. He has no meter to get the code. One thing I should also add it had been in the 70's when all this work was done. He thought he finally had it fixed, but I drove it home and within 8 miles the check engine light came on again. He worked on it the next day and said he reved it up good and the check engine never came on, but now the oil pressure was dropping to 0 when at idle or the rpms got below 1000. He started working on that and replaced the oil pressure sensor, but after the car idles for awhile it drops or when the RPM's drop below 1000. I asked him if he thought it was a wiring or grounding issue, but his friend, a former Ford mechnic, thinks I need my motor rebuilt. I should say I have NEVER had an issue with engine performance or the engine making a noise. Since this oil pressure issue started the engine does not change sound when the pressure drops and we ran it for a minute. When this first occurred he checked the pressure with a gauge and he said the pressure looked good. His friend checked it with another one and he said the pressure dropped below 10. I am not sure who to believe at this point. All I know is that except for the anti-freeze smell this car had no other issues. No burning or leaking of oil. Today he worked on it again, put 20w oil in it and the temperature is cooler today (50's) and the check engine light is not coming on. The old Ford mechanic said that was due to the cooler weather. I asked him if they took any connections loose and he said yes, but none that would fix that. Is he joking about the cooler temps preventing the check engine from coming on? This has turned into a nightmare for me. The car is garage kept and does sit for prolonged periods of time (5-6 months) without being turned on. And the humidity in the garage can get up to 70% in the summer months. Maybe some corroded or loose connections or maybe he didn't hook a wire(s) up correctly.
Thank you in advance for your time.
Friday, March 25th, 2011 AT 1:32 AM