I have toruble codes an i need to fix them po26, po38 po52, po74 can someone tell me how to fix them

This code means that either the throttle position switch, or its wiring is shorted. So the system should be inspected and tested to see whether the problem is in the switch or the wiring. When the short is found it should be repaired, or the defective part replaced.

AWH: Cadillac On-Board Diagnostic Trouble Codes (OBD)

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Diagnostic Trouble Codes for OBD I equipped General Motors (GMC, ... BCM Codes; ECM Codes; PCM Codes; IPC Codes; ABS Codes; SIR Codes ..... LR Wheel Speed Sensor Frequency Error T037 . ...... Intermittent TPS Signal P071 (E071) . ..... NOTE: The part numbers listed above are for the Cadillac Deville, Eldorado ...

Lightbulb Re: How can I check for any codes Im throwing ...

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Jan 28, 2004 - 11 posts - ‎8 authors
I heard that if you hold temp and off, it will show you the codes you are throwing. ...Cadillac DeVille 1985 to 2005 including: ... Diagnostic Trouble Codes for OBD I equipped General Motors (GMC, Chevrolet, Buick, Oldsmobile, .... T037 .......... .............................. LR Wheel Speed Sensor Continuity Fault T041 .

Trouble Code Help???? OBD1 Codes, 1993 GM Cadillac El Dorado ...

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Nov 30, 2007 - I retrieved these codes : PO31, PO52, PO53, PO91, IO39, IO52, AO48 they had History behind them but Iwant to know what these mean and are ...

P0038 - HO2S Heater Control Circuit High Bank 1 Sensor 2
P0128 - Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)
P0336 - Crankshaft Position Sensor Circuit A Range/Performance
P0386 - CKP Sensor B Circuit Performance.
your most likely need to replace the crankshaft sensor and probably will take care of the 0336 and 0338 codes.
you then need to check your coolant level, if low fill and look for leaks, if not low, most likely replacing the thermostat will correct other two codes

Bill honestly if your not getting code PO38 something on the MIL light isn't on .I would look at the fuel supply air supply .
Every engine needs 3 things to run electrical spark you have that AIR supply and Fuel supply .
Fuel pumps tend to last 10 years in chevys but take the fuel filter off stick the line comeing from the tank into a plastic soda bottle turn the key to run this will start the fuel pump see how much fuel you get in 10 seconds then you can estamate gal per minuite this pump puts out 66 lbs pressure bolth ways feed and return .
Off hand don't know the spec for fuel flow but its high you should get a lot fast .Its fuel

IAT is: Intake air Temperature sensor.
MAP is: Manifold Absolute Pressure sensor. This one seems more important than the air temp.

They come together as one device.
Try www.Autozone.com for more advise.

Hope this helps.

Both of those codes refer to a problem with the secondary air system (air pump). The P0491 refers specifically to bank 1. Both codes are generic in nature and don't tell you anything specific about the problem so the whole system has to be troubleshooted. Look for damaged hoses or vacuum lines off for starters.

thats the o2 sensor bank1 sensor 2

What does codes 72 and 77 mean on a 95 Cadillac deville year 95

Hi.. On your question the definition of the codes are:
P0171, System to lean ( Fuel trim)
P1130, Air / Fuel sensor circuit range ? performance malfuntion This code is exclusive california Emissions). Oxigen sensor Performance malfuntion.
The first step you need to do is Check the Oxigen ( O2 sensor)
Connections The front and the rear one.
Check the condition of the Air filter Replace if need.
Check Spark plug Replace if need.
Check Fuel condition, Replace fuel filter if need.
And Clear the Codes if averything is good.
If the code P1130 return Replace the Air fuel ratio sensor..

Ok.. I hope this help on your question. If need more info letme know.

Thankyou for use fixya...

CODE PO52 IS FAULTY OR MISSING CAL PAC -MEM CAL CODE PO85 IS IDLE LEARN MAX THROTTLE POSITION. .I DID NOT FIND - 1039 AND 1052 SORRY.BUT I HOPE THIS COULD BE SOME HELP.