Jeep 1987 Wrangler Workshop Manual page 1617

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G THROTTLE BODY FUEL INJECTION SYSTEM
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G
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G
2.0L ENGINE
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G
COMPONENT DIAGNOSIS (Cont'd)
C O N D I T I O N
P O S S I B L E C A U S E
C O R R E C T I O N
Air filter restricted.
Check the air filter.
Replace as necessary.
EGR valve malfunction. Check the EGR valve and hoses.
Repair or replace.
Canister purge malfunction.
Check the canister purge function.
Repair as necessary.
SUMMARY
It should be understood that the E C U is
extremely reliable and must be the final
component to be replaced if a doubt exists
concerning the cause of a fuel injection system
failure.
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