Hi! I need help with several issues with my 1990 T-Bird SC. This is the first T-Bird SC Car I have. I just overhauled the engine and added some modifications:
1. 7% Overdrive supercharger pulley
2. 38 lbs / hr injectors (I understand factory injectors are 32 lbs / hr)
3. 2% Overdrive jack shaft pulley
4. 75mm Throttle body
5. Comp Cams Rocker Roller arms (P/N 1619-12)
6. Comp Cams Pushrods set (P/N 7635-12)
7. Valve Springs, Guide Plates and shims
8. Comp Cams Camshaft P/N 44-701-9
9. Kooks mid length headers
These are the only modifications I made I just recently fired up the engine for the first time and observed the following issues:
1. When I start the engine it is not going into idle. It stays between 3,000 and 2,000 RPMs. At times the engine gets to 1,500 RPMs but it eventually ends up back between 2,000 and 3,000rpms.
2. I need a test method (other than smoke testing) to determine if I have a vacuum leak.
3. The computer is giving a code for throttle position sensor. I replaced the connector plug from this sensor because it was in very bad shape. I replaced it with a spare connector plug I had from another 1990 SC T-Bird and tried to follow the same color scheme to match the cables. I also replaced the throttle position sensor with a new one and still get the code for throttle position sensor. So I guess at this time I need the wiring identification (i.e. which color is ground, which is signal, etc.) to verify I properly connected the wires to the pins in the plug. Next I will need a method for properly testing the throttle position sensor and also the circuit.
4. The computer is also sending a code for the purge canister solenoid sensor. Where is this sensor located?
5. I need to know where is the coolant temp sensor since I’m also getting a code from the computer for this sensor. Is this sensor the one on the passenger side near the A/C Compressor or is this the one located at the water outlet next to the alternator.
6. Finally, when I fire up the engine, the headers are getting red hot. What is causing this? I research the internet for this problem and it seems this may be caused by rich or lean air / fuel mixture or timing. I did remove the spark plugs and these were covered in black carbon deposits.
Any help I can get will be greatly appreciated. Thanks!
1. 7% Overdrive supercharger pulley
2. 38 lbs / hr injectors (I understand factory injectors are 32 lbs / hr)
3. 2% Overdrive jack shaft pulley
4. 75mm Throttle body
5. Comp Cams Rocker Roller arms (P/N 1619-12)
6. Comp Cams Pushrods set (P/N 7635-12)
7. Valve Springs, Guide Plates and shims
8. Comp Cams Camshaft P/N 44-701-9
9. Kooks mid length headers
These are the only modifications I made I just recently fired up the engine for the first time and observed the following issues:
1. When I start the engine it is not going into idle. It stays between 3,000 and 2,000 RPMs. At times the engine gets to 1,500 RPMs but it eventually ends up back between 2,000 and 3,000rpms.
2. I need a test method (other than smoke testing) to determine if I have a vacuum leak.
3. The computer is giving a code for throttle position sensor. I replaced the connector plug from this sensor because it was in very bad shape. I replaced it with a spare connector plug I had from another 1990 SC T-Bird and tried to follow the same color scheme to match the cables. I also replaced the throttle position sensor with a new one and still get the code for throttle position sensor. So I guess at this time I need the wiring identification (i.e. which color is ground, which is signal, etc.) to verify I properly connected the wires to the pins in the plug. Next I will need a method for properly testing the throttle position sensor and also the circuit.
4. The computer is also sending a code for the purge canister solenoid sensor. Where is this sensor located?
5. I need to know where is the coolant temp sensor since I’m also getting a code from the computer for this sensor. Is this sensor the one on the passenger side near the A/C Compressor or is this the one located at the water outlet next to the alternator.
6. Finally, when I fire up the engine, the headers are getting red hot. What is causing this? I research the internet for this problem and it seems this may be caused by rich or lean air / fuel mixture or timing. I did remove the spark plugs and these were covered in black carbon deposits.
Any help I can get will be greatly appreciated. Thanks!