Codes 53 and 87 on my '88 5.0
09-13-2007, 11:24 AM
#1
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Codes 53 and 87 on my '88 5.0
Any ideas on what may be causing code 53? The TP sensor was just changed a month ago. Also, on code 87...does that code refer to the Low Pressure pumps or the High Pressure pump? Thanks.
09-13-2007, 12:10 PM
#2
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Wonder if the TPS was installed right? If I recall correctly, it's got a little wiggle room to allow positioning exactly as the old one before the screws are cranked down - supposed to use scribe marks and the like to be sure the new is in place exactly as the old. If that didn't happen, may try to rotate the sensor as fully clockwise as the wiggle room will allow, then tighten back down.
With the two-digit codes, the descriptions leave a lot to be desired - it appears that the fault covers both pumps and things in between. Probably going to have to troubleshoot the pumps individually. The code list I looked at also suggested check of the inertia switch.
With the two-digit codes, the descriptions leave a lot to be desired - it appears that the fault covers both pumps and things in between. Probably going to have to troubleshoot the pumps individually. The code list I looked at also suggested check of the inertia switch.
09-13-2007, 12:24 PM
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I just checked the TPS and the connecter from the harness looks melted...I'm going to replace that and see if it makes a difference. The TPS was replaced by the dealer ( I should know better, but didn't have the time). On the pumps should I just do voltage checks?
09-13-2007, 12:40 PM
#4
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Not much experience here troubleshooting in this area.
The text that I found for the fault code is:
It might be easiest to first listen before diving into meters and such - roll the key to ON for the two-second fuel charge. Sitting in the cab, you should hear something - you didn't say if the truck was operable or not - don't want to overlook the inertia switch or the like that is common to both pumps.
Maybe put a sounding rod on the tank to listen for low-pressure pump, may want to unplug the high-pressure pump so you're not hearing it. You can put your hand on the high-pressure pump to feel if it's working.
The text that I found for the fault code is:
87
(O)
(O)
Fuel pump circuit fault (check inertia switch) - Power / Fuel Pump Circuits
Vehicles with 2BBL carb - Temperature Compensated Accelerator Pump Solenoid - Solenoids (M) intermittent in fuel pump primary circuit - Power / Fuel Pump Circuits NOTE: On some Escorts with automatic seat belts this code is normal IN MEMORY due to the wiring
It might be easiest to first listen before diving into meters and such - roll the key to ON for the two-second fuel charge. Sitting in the cab, you should hear something - you didn't say if the truck was operable or not - don't want to overlook the inertia switch or the like that is common to both pumps.
Maybe put a sounding rod on the tank to listen for low-pressure pump, may want to unplug the high-pressure pump so you're not hearing it. You can put your hand on the high-pressure pump to feel if it's working.
01-28-2012, 05:55 PM
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Not much experience here troubleshooting in this area.
The text that I found for the fault code is:
It might be easiest to first listen before diving into meters and such - roll the key to ON for the two-second fuel charge. Sitting in the cab, you should hear something - you didn't say if the truck was operable or not - don't want to overlook the inertia switch or the like that is common to both pumps.
Maybe put a sounding rod on the tank to listen for low-pressure pump, may want to unplug the high-pressure pump so you're not hearing it. You can put your hand on the high-pressure pump to feel if it's working.
The text that I found for the fault code is:
87
(O)
(O)
Fuel pump circuit fault (check inertia switch) - Power / Fuel Pump Circuits
Vehicles with 2BBL carb - Temperature Compensated Accelerator Pump Solenoid - Solenoids (M) intermittent in fuel pump primary circuit - Power / Fuel Pump Circuits NOTE: On some Escorts with automatic seat belts this code is normal IN MEMORY due to the wiring
It might be easiest to first listen before diving into meters and such - roll the key to ON for the two-second fuel charge. Sitting in the cab, you should hear something - you didn't say if the truck was operable or not - don't want to overlook the inertia switch or the like that is common to both pumps.
Maybe put a sounding rod on the tank to listen for low-pressure pump, may want to unplug the high-pressure pump so you're not hearing it. You can put your hand on the high-pressure pump to feel if it's working.
This thread is old, but i am troubleshooting my fuel pump problems and ran a diagnosis with these two same codes coming up: 53 and 87. my question is where is the Pump Solenoid mentioned above located? I already replaced the fuel pump relay switch.
