2nd injector/airpump/neg connection problem all at once?
08-05-08, 12:48 PM
#1
2nd injector/airpump/neg connection problem all at once?
from what i am reading, it seems that my car is in a limp mode (w/ 3k hesitation).
i just had my pre-cat removed for a dp (so i know my cat isn't clot) since problem still happens.
symptom:
- when i connect the exiting airpump hose to the exhaust, it makes a screeching noise (so now i just leave that hose d/c)
- (ECU error code: Front Secondary Injector- open circuit) when i was replacing my vac lines, i accidentally d/c the fuel line, so i got air in the line. i thought it won't be a problem so i still started a car; no apparent problem on startup (just thought this might damage the injector?)
- turbo do not kick it. as soon as i hit 0psi, it goes limp (knocking sound from i think exhaust) on me. i have driven on the freeway without turbo kicking in.. so...
- when i am driving and i release the gas paddle, it has almost -22 vac!!!!
- i experience rougher idle with headlight turned on (hunting more)
so... now i am very confused. there all seem to be unrelated problems... i just had my vac lines done and this is the symptom i am getting... so my question is, is it:
1) vac line incorrectly connected at one point? (i checked and everything seems correct...)
2) something to do with airpump?! but with it off i still have the problem.
3) the injector is bad? or do i have a lose electrical plug (where is this plug then?!)
thanks for your help in advance.. i know this is more of a noob question
i just had my pre-cat removed for a dp (so i know my cat isn't clot) since problem still happens.
symptom:
- when i connect the exiting airpump hose to the exhaust, it makes a screeching noise (so now i just leave that hose d/c)
- (ECU error code: Front Secondary Injector- open circuit) when i was replacing my vac lines, i accidentally d/c the fuel line, so i got air in the line. i thought it won't be a problem so i still started a car; no apparent problem on startup (just thought this might damage the injector?)
- turbo do not kick it. as soon as i hit 0psi, it goes limp (knocking sound from i think exhaust) on me. i have driven on the freeway without turbo kicking in.. so...
- when i am driving and i release the gas paddle, it has almost -22 vac!!!!
- i experience rougher idle with headlight turned on (hunting more)
so... now i am very confused. there all seem to be unrelated problems... i just had my vac lines done and this is the symptom i am getting... so my question is, is it:
1) vac line incorrectly connected at one point? (i checked and everything seems correct...)
2) something to do with airpump?! but with it off i still have the problem.
3) the injector is bad? or do i have a lose electrical plug (where is this plug then?!)
thanks for your help in advance.. i know this is more of a noob question
08-05-08, 03:10 PM
#2
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if you read the shop manual it says "check engine light will come on for an open or short circuit"
so if the check engine light is on for the front secondary injector, that means there is an electrical problem in that circuit.
that code will also set a "limp home" mode, as the ecu thinks its not getting fuel from that injector.
first thing to do is make sure that the injector is plugged in.
if that doesnt fix it, then you need to check the resistance of the injector, and then look at the wiring harness for continuity. there is a page in the shop manual with steps for just this.
so if the check engine light is on for the front secondary injector, that means there is an electrical problem in that circuit.
that code will also set a "limp home" mode, as the ecu thinks its not getting fuel from that injector.
first thing to do is make sure that the injector is plugged in.
if that doesnt fix it, then you need to check the resistance of the injector, and then look at the wiring harness for continuity. there is a page in the shop manual with steps for just this.
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