exhaust system heat shield gone
12-04-02, 12:22 PM
#1
Junior Member
Thread Starter
Join Date: Nov 2002
Location: germany
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
exhaust system heat shield gone
if the exhaust system heat shield is gone in my california FD, could this cause the yellow "check engine" light to come up? in other words, is there a feedback to the ECU?
camorra
camorra
12-04-02, 02:03 PM
#2
Rotary Freak
I doubt that a missing heat sheild would affect anything with the ECU. I've removed a few of mine(heat shields) with no issues. Try resetting your ECU. Unhook battery, while unhooked pump the brakes a few times and reconnect battery, start car. See if that works.
12-04-02, 02:54 PM
#3
Senior Member
Join Date: Oct 2002
Location: Bartlesville, OK.
Posts: 394
Likes: 0
Received 0 Likes
on
0 Posts
I think missing too many heat shields MIGHT be able to cause problem(s).
The exhaust overheat sensor is mounted inside the car on the floorboard under the right-hand passenger's seat. According to my read of the wiring diagram in the ’93 manual this circuit is also linked to pin 21 of the ECU.
I didn't find any check engine error code listed, but since it shows to be connected, it might (1) flash the warning light, (2) generate an undocumented error code, and/or (3) change some aspects of the engine's operation in an attempt to lower exhaust temperatures.
’93 manual section F-189 details how to test the sensor itself.
The exhaust overheat sensor is mounted inside the car on the floorboard under the right-hand passenger's seat. According to my read of the wiring diagram in the ’93 manual this circuit is also linked to pin 21 of the ECU.
I didn't find any check engine error code listed, but since it shows to be connected, it might (1) flash the warning light, (2) generate an undocumented error code, and/or (3) change some aspects of the engine's operation in an attempt to lower exhaust temperatures.
’93 manual section F-189 details how to test the sensor itself.
