XJ40 : starts and immediately stalls
#1
XJ40 : starts and immediately stalls
Hello !
On a XJ40 1990 4.0, I encounter an embarrassing problem : when I turn the ignition key, the engine starts right away, but immediately stalls.
What I've checked :
I ordered a new CPS sensor ... it will arrive in 2 days, but in the meantime, may be do you have any other idea ?
Thanks !
On a XJ40 1990 4.0, I encounter an embarrassing problem : when I turn the ignition key, the engine starts right away, but immediately stalls.
What I've checked :
- I have ignition : I took out a plug, and when running the starter I've sparks.
- I have fuel : i took away the hose from the fuel pressure regulator after the injectors, and when I shortcut the pump relay, the fuel is going out. (I've also tried to start the engine while the pump relay was shorted)
- If if put start pilot inside air input when cranking, the motor is running as long as put start pilot inside (I used brake cleaner for this test, and only for 5 or 6 seconds)
I ordered a new CPS sensor ... it will arrive in 2 days, but in the meantime, may be do you have any other idea ?
Thanks !
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So, nothing better with the new CPS.
BUT !
I tried to disconnect the mass airflow sensor and ... the engine started right away and it idles pretty good, and it revs good.
As soon as I connect the MAF again, immediately the engine stalls ! I think I've found the guilty part.
But, I did not know that a faulty MAF could cause the engine to not start like this !
BUT !
I tried to disconnect the mass airflow sensor and ... the engine started right away and it idles pretty good, and it revs good.
As soon as I connect the MAF again, immediately the engine stalls ! I think I've found the guilty part.
But, I did not know that a faulty MAF could cause the engine to not start like this !
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