3rd Generation Specific (1993-2002) 1993-2002 Discussion including performance modifications and Technical Support Sections.
Sponsored by:

Bad Fuel Thermosensor Symptoms

Thread Tools
 
Search this Thread
 
Old 05-24-17, 03:39 PM
  #1  
Full Member

Thread Starter
iTrader: (23)
 
SpeedCrazie's Avatar
 
Join Date: Nov 2004
Location: somewhere
Posts: 202
Received 14 Likes on 12 Posts
Bad Fuel Thermosensor Symptoms

Getting a code for this sensor, I know aftermarket rails delete this. Which leaves the question does it have an adverse affects on driving if it's bad?
Old 05-24-17, 08:20 PM
  #2  
rotorhead

iTrader: (3)
 
arghx's Avatar
 
Join Date: Aug 2004
Location: cold
Posts: 16,182
Received 429 Likes on 263 Posts
It is for hot starts. If the fuel gets too hot, it engages the fuel pressure solenoid, which cuts vacuum to the regulator after startup, raising fuel pressure
Old 05-25-17, 01:35 AM
  #3  
Full Member

Thread Starter
iTrader: (23)
 
SpeedCrazie's Avatar
 
Join Date: Nov 2004
Location: somewhere
Posts: 202
Received 14 Likes on 12 Posts
Originally Posted by arghx
It is for hot starts. If the fuel gets too hot, it engages the fuel pressure solenoid, which cuts vacuum to the regulator after startup, raising fuel pressure
Thank you! So in all reality it shouldn't cause problems such as hesitations or bucking?
Old 05-25-17, 09:04 AM
  #4  
RX-7 Bad Ass

iTrader: (55)
 
DaleClark's Avatar
 
Join Date: Jan 2002
Location: Pensacola, FL
Posts: 15,399
Received 2,437 Likes on 1,508 Posts
I don't think so. You may want to review the shop manual. I think it's main purpose is bumping fuel pressure on hot starts as Arghx said.

Also, most likely the wiring is bad or the connector is bad, the sensors are really hardy.

Dale
Old 05-25-17, 09:59 AM
  #5  
Sponsor
iTrader: (41)
 
IRPerformance's Avatar
 
Join Date: Apr 2003
Location: NJ
Posts: 11,347
Received 317 Likes on 190 Posts
Do a resistance test of the sensor per the fsm. Also do a continuity test from the wires back to the ecu.
Old 06-05-17, 09:10 PM
  #6  
Full Member

iTrader: (1)
 
Robbierx7's Avatar
 
Join Date: Apr 2004
Location: UK. Birmingham
Posts: 242
Received 0 Likes on 0 Posts
Whilst on the subject of this sensor, I,ve removed this sensor so there's nothing plugged into the connector plug. Will this have any adverse effect on the running of the car? I've got a PFC but the car is off the road at the moment and im not is a position to start the engine just yet.




All times are GMT -5. The time now is 05:59 PM.