1992 Ford Tempo Voltage Problem

KISHAYINEW

MEMBER
1992 FORD TEMPO
2.3L
4 CYL
200,000 MILES

Hi I Have This 92 Ford Tempo GL, Just Recently Started Having This Problem With Getting It Started, Ive Checked The Engine Codes On It & Came Up With 159, 118, 122, 123 & Just Cant Seem To Figure Out What They Mean? Ive Done A Few Tests On The Vehicle Like Disconnecting The Fuel Rail From The Engine With Fuel Injectors Not Attached To The Engine & Tried Cranking The Engine & Noticed The Fuel Injectors Weren't Spraying Gasoline? Ive Disconnected The Fuel Filter Line To The Fuel Rail To Check If The Fuel Pump Was Working & It Still Seems To Be In Working Order, Changed The Fuel Pressure Regulator, Fuel Injectors Still Weren't Spraying Gasoline. Changed The Ecm, Changed The Ignition Switch, & Still Cant Cant Seem To Figure Out What The Problem Is?

Sunday, July 12th, 2015 AT 8:42 PM

4 Replies

HMAC300

MECHANIC
48,601 POSTS

Go to this link it will tell you

https://www.2carpros.com/articles/ford-lincoln-mercury-obd1-1995-and-earlier-diagnostic-trouble-code-definition-and-retrieval

they give the meaning there check your fuel pressure with a gauge auto parts rent it for free or cheap, this guide can help walk you through the steps.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Please go over these guides and report back.

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Monday, July 13th, 2015 AT 7:04 AM

KISHAYINEW

MEMBER
5 POSTS

159 - MAF Sensor Is / Was Out Of Range - MAF
118 - ECT SENSOR Is / Was High Or Open - ECT
122 - TP Low (Possibly Grounded Or Open Circuit) - TPS
123 - TP Is / Was High Or Short To Power - TPS
Any Ideas On Where You Think I Should Look First. Like I Said Ive Already Changed The Ecm, Changed The Ingnition Switch, & Checked My Fuses, & For Sure I Know Its Got To Be Something That Feeds Power To These Code Problems.

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Monday, July 13th, 2015 AT 7:58 AM

HMAC300

MECHANIC
48,601 POSTS

Try cleang maf sensor with choke or electrical cleaner, make sure duct work has no holes clean throttle plate on both sides and iac hole with choke cleaner replace ect sensor and check battery for condition including load test. Then reset ecm by pulling fuse for 30 seconds or so.

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Monday, July 13th, 2015 AT 9:26 AM

KISHAYINEW

MEMBER
5 POSTS

Ok Problem Solved It Was Only Just The ECT Sensor After All, Got My Car Up Started And Running Again, So What I Did Was Just Grabbed A Pen And Peice Of Paper And Drew Out A Wire Diagram Of These 4 Sensors With What Codes I Came Up With, & Realized Code 118 ECT Sensor Had A High Voltage In The Circuit And Codes 122, 123, 159 Were Out Of Range, So I Checked The ECT Sensor And Noticed It Was Pretty Dirty Covered In Green Coolant Sludge, Replaced It With Another One, And The Vehicle Started Right Away & Now Purrs Like A Kitten LOL, All I Have To Say Is THANK YOU! For Giving Me The Lead To The Trouble Codes Obd Site It Was Much Help For Letting Me Know What The Codes Meant. THANK YOU!

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Monday, July 13th, 2015 AT 4:03 PM