1985 Corvette Bogging
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1985 Corvette Bogging
The car has the following bolt ons from Tuned Port Induction Specialties (TPIS): Racing air intake, headers, high flow cat. & performance exhaust. The throttle body is a BBK 52mm.
4 months ago a mechanic told me the mass air flow sensor (MAF) was faulty (the car had been bogging/hesitating on moderate/heavy acceleration) & had been doing this for past few yrs.).
Past history: intake manifold gasket & fuel injectors replaced in 1997. Knock sensor replaced in 2001 (as per mechanic it was faulty).
I replaced the MAF sensor (got it from TPIS), distributor cap/rotor, spark plugs/wires, gas filter & ignition timing needed adjustment. Vacuum lines running above the manifold are intact (not cracked etc.).
The car ran great until 1 month ago when I got caught in a heavy rain storm. I was on the highway at the time & under a sudden down pour when I went over an area were there was alot of water. I could hear the loud noise of water underneath my car & within seconds the car started to run/idle rough at 300 to 500 rpms (I really thought the car was going to shut off but 15 miles later I made it home with the car running very rough etc.).
I sent the MAF sensor to TPIS & was told it works fine & was told water would not damage it. I was thinking water got sucked up through the air intake (air filter was found to be wet). I got a ECM code of 44 & changed the O2 sensor located at bottom of header. It is much improved but still get bogging/hesitation on acceleration. The car has 55,000 original miles. I have used fuel injector cleaner in the past. Any thoughts on what my problem is? I am pretty sure the water has something to do with it.
I also keep getting a ECM code of 32 which is the ECG temperature valve/sensor (code comes on without fail after 7 miles of highway driving). I know that most of the time the EGR temperature sensor (that gets screwed into the EGR valve in my 1985 model) is the problem but no one makes the EGR sensor anymore (I am in the process of removing the EGR valve/sensor for inspection/cleaning etc.). Any thoughts on this second issue will also be appreciated.
4 months ago a mechanic told me the mass air flow sensor (MAF) was faulty (the car had been bogging/hesitating on moderate/heavy acceleration) & had been doing this for past few yrs.).
Past history: intake manifold gasket & fuel injectors replaced in 1997. Knock sensor replaced in 2001 (as per mechanic it was faulty).
I replaced the MAF sensor (got it from TPIS), distributor cap/rotor, spark plugs/wires, gas filter & ignition timing needed adjustment. Vacuum lines running above the manifold are intact (not cracked etc.).
The car ran great until 1 month ago when I got caught in a heavy rain storm. I was on the highway at the time & under a sudden down pour when I went over an area were there was alot of water. I could hear the loud noise of water underneath my car & within seconds the car started to run/idle rough at 300 to 500 rpms (I really thought the car was going to shut off but 15 miles later I made it home with the car running very rough etc.).
I sent the MAF sensor to TPIS & was told it works fine & was told water would not damage it. I was thinking water got sucked up through the air intake (air filter was found to be wet). I got a ECM code of 44 & changed the O2 sensor located at bottom of header. It is much improved but still get bogging/hesitation on acceleration. The car has 55,000 original miles. I have used fuel injector cleaner in the past. Any thoughts on what my problem is? I am pretty sure the water has something to do with it.
I also keep getting a ECM code of 32 which is the ECG temperature valve/sensor (code comes on without fail after 7 miles of highway driving). I know that most of the time the EGR temperature sensor (that gets screwed into the EGR valve in my 1985 model) is the problem but no one makes the EGR sensor anymore (I am in the process of removing the EGR valve/sensor for inspection/cleaning etc.). Any thoughts on this second issue will also be appreciated.
