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2003 Toyota Tacoma - Page 4 Questions & Answers
Need to tune up my truck what will i need to replace
Hi Jeffery, You forgot to say if it has a petrol or diesel engine. In the case of a petrol engine, replace the the oil filter, fuel filter and air filter, and the spark plugs. Other than these items there is little else to do, as the engine performance is entirely controlled by the management system. The only difference between diesel and petrol powered vehicles during service, is that with diesel there are no spark plugs. Remember in the case of a diesel to fill the fuel filter with clean fuel before fitting it to the housing. Doing so will help in expelling the air from the system and make start up easier. Also fill the oil filter with the same multi grade engine oil used in service, so that on start up the engine is lubricated more quickly. Regards John
What is check engine code
Reasons are:
HO2S no. 1 heater circut is open or shorted
HO2S no. 1 is defective
Defective ECM
Using a scan tool, read freeze frame data. Freeze fram data records engine conditions when a malfunction is detected.
Access ECM behind glove box. Turn ignition on. Using DVOM, backprobe
ECM harness connector. If DTC P0135 is set, measure voltage between
ground and terminal No. 3 (Blue/Black wire) at ECM harness connector
E10. If DTC P0155 is set, measure voltage between ground and terminal
No. 4 (Yellow/Red wire) at ECM harness E10. Voltage should be 9-14
volts at each terminal. If voltage is as specified, replace ECM.
If not, Disconnect suspect HO2S No. 1 harness connector. Measure
resistance between terminals B+ (Black/Yellow wire) and HT (Blue/Black
wire on bank No. 1 ; Yellow/Red wire on bank No. 2) at HO2S connector
(component side). Resistance should be 11-16 ohms at 68 degrees F and
23-32 ohms at 1472 degrees F. If resistance are not specified, replace
appropriate HO2S. If resistance are specified, Repair wiring between
ECM and appropriate HO2S, or between appropriate HO2S and EFI main relay
(Black/Yellow wire at HO2S and Red wire at EFI main relay)
2003 toyota tacoma won't start
What was checked/tested ?Fuel pressure at motor & spark cranking?Battery seems fine based on what kind of testing?Won't StartWon't Turn OverHave to get your thoughts around what you say
Was idle at 1500, replaced IAC valve now
FOLLOW LINK.http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?fromSearchPage=true&pageId=0996b43f80378c6a&partName=Throttle+Position+Sensor&partId=0996b43f80378c6a
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