What was the circuit number for a Cadillac Seville in 1975?
What was the circuit number for a Cadillac Seville in 1975?
Electrical and vacuum circuits for all fuel injected cars, 1975 to 1977, are presented at the back of this manual to aid diagnosis as small changes have been incorporated from year to year which often affect diagnosis. When specific circuits need investigation, reference will be made to a circuit number (807,827, etc).
What causes a Cadillac Seville engine to stall?
Fuel pressure which is low or was normal when the engine is started, but falls off as the stall develops, can be either an electrical or a fuel system problem. To eliminate the electrical aspects, repeat the stall with the Analyzer 5-25400 in step 20 (monitor) and observe the speed sensor, fuel pump, group I and 2, and ignition ON lights.
What causes low fuel pressure in a Cadillac Seville?
A primary cause of this condition is low idle speed caused by an accumulation of deposits on the throttle valves and idle bypass passage. The idle speed should be set to 650 RPM, (600 RPM on 1975-1976 C and E)before any further diagnosis. 2. Normal fuel pressure is shown in Fig. 1.
Can a damaged hose be replaced on a Cadillac Seville?
A damaged hose can be replaced without replacing the entire line by splicing in a section of hose which conforms to GM Spec. 6107M. The diagnosis which follows covers a condition in which the engine stalls immediately, or as a driveaway is attempted with a hot to very hot engine.
Electrical and vacuum circuits for all fuel injected cars, 1975 to 1977, are presented at the back of this manual to aid diagnosis as small changes have been incorporated from year to year which often affect diagnosis. When specific circuits need investigation, reference will be made to a circuit number (807,827, etc).
Fuel pressure which is low or was normal when the engine is started, but falls off as the stall develops, can be either an electrical or a fuel system problem. To eliminate the electrical aspects, repeat the stall with the Analyzer 5-25400 in step 20 (monitor) and observe the speed sensor, fuel pump, group I and 2, and ignition ON lights.
A primary cause of this condition is low idle speed caused by an accumulation of deposits on the throttle valves and idle bypass passage. The idle speed should be set to 650 RPM, (600 RPM on 1975-1976 C and E)before any further diagnosis. 2. Normal fuel pressure is shown in Fig. 1.
A damaged hose can be replaced without replacing the entire line by splicing in a section of hose which conforms to GM Spec. 6107M. The diagnosis which follows covers a condition in which the engine stalls immediately, or as a driveaway is attempted with a hot to very hot engine.
What was the ignition switch on a 1978 Cadillac Seville?
Figure 6-1 shows inputs which govern the outputs of the Electronic Control Unit. For detailed procedures, read “Electronic Fuel Injection” in 1978 Cadillac Service Manual. With the IGNITION SWITCH in Start or Run, current flows to the DISTRIBUTOR through the PNK wire.
Where is the EFI switch on a Cadillac Seville?
– To check LEFT FRONT DOOR SWITCH, connect wire from FUSE BLOCK connector (C101, terminal M) to ground and observe indicator light. The EFI controls fuel injection and limits emissions by balancing the air/fuel mixture. NOTE: The normal engine timing advance is 10° before TDC (8° in California).
Where does the field current come from on a Cadillac Seville?
Field current is provided by the Diode Trio or from the BATTERY through the GENERATOR INDICATOR.At low engine speed, current flows from the BATTERY through the GENERATOR INDICATOR to the FIELD WINDING. The GENERATOR INDICATOR is lit whenever the BATTERY supsupplies field current.
Why does my Cadillac Seville not have EFI?
The procedures presented here incorporate other engine systems in addition to EFI since many complaints are caused by improper operation of these systems, and not necessarily the EFI system.
The procedures presented here incorporate other engine systems in addition to EFI since many complaints are caused by improper operation of these systems, and not necessarily the EFI system.
