Tune request for a 2007 2.4L LE5 With updated Injectors

[DrLoch]

Have a 2007 HHR with a 2.4l throwing a P1174. Would like to up date injectors, need to get the injector data for the new injectors or any factory that will work as a replacement.

Thanks
Dennis

[gtstorey]

I don't know that P1174 is a real code for that engine. Internet leads that to a bank to bank imbalance on fuel trims and you only have 1 bank. Have you confirmed that code with the service manual for that particular vehicle? Beyond that what injectors are you using?

[DrLoch]

Have a TSB from GM covering that very issue. 08-06-04-001

Models: 2006-2007 Chevrolet Cobalt, HHR

2007 Pontiac G5, G6

2006-2007 Saturn ION

with 2.4L Engine (VIN B, P - RPO LE5)




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Condition
Some customers may comment on the check engine light being illuminated.

A scan tool may reveal DTC P0171, P0300 or P1174 set as current or in history.

Cause
This condition may be caused by the plugging of one or more of the injector director plate orifices which results in a lean condition.

Correction
Important: This condition cannot be corrected by cleaning the injector(s).

Perform an injector balance test using the Active Fuel Injector Tester (AFIT), CH-47976. Refer to the Fuel Injector Diagnosis (w/CH47976) procedure in SI. If any injector is identified as having a lean condition, replace all four injectors with the revised injectors. After installing the new injectors, reprogram the ECM with updated calibration files using the TIS2WEB Service Programming System (SPS) application. There are two calibration part numbers that are valid for "Engine Operation". Select the part number with the description that reads for vehicles with second design injector. The injector has a dark blue overmold color for this repair.

Important: The fuel injectors must be replaced and the new calibration files must be installed to ensure a complete repair. Failure to perform both repairs will result in the customer returning with the same condition.

If a vehicle returns with the same condition after having this repair performed, the technician should first verify that the complete repair was performed before continuing with SI diagnostics.

Parts Information
Part Number
Description
Qty

12602480
Injector, Fuel
4


Warranty Information
Important: For claims to be paid, injector balance test results must be recorded on the repair order.