I pulled a code 66 which is MAF voltage too low. I read in another post that someone had been having the same problem and cured it with a 130amp alt. instead of the stock alt.which just wasnt doing the job with extras like an electric fan. I was hoping to get some advice on a fix before I spend any cash.

 

Check all the connectors going into the MAF and look for corrosion or a loose pin.Make sure all the wires going into the connectors are tight and not hangin' on by a single wire.

 

yes check ever connector and for signs of excessive wear. if they are all ok, make sure you determine the problem as either maf sensor or alt, as they both cost quite a lot to replacement.

 

My MAF is not even a year old so I dont think its that and all the wires look fine, no signs of any wear of anything. I was just really trying to see if the alt would actually cure the problem instead of just blowing the cash when its something else.

 

And the car runs good and strong. When I disconnect it the car runs like **** obviously, so there has to be some voltage getting to it I.

 

yeah. just check the alt output next

 

You mean like how many amps its putting out? Is there a way I can do it with a multimeteror would I have to take it to autozone or something?

 

you need a test light and an ammeter...

 

i would actually do the following test...i copied one so i don't explain it poorly

With the engine idling, touch one test lead of your voltmeter to the battery positive (+) post, and the other test lead to the BAT (B+) terminal on the alternator. Ideally, the voltmeter should read less than 0.2 volts.

If you see a voltage reading greater than 0.2 volts, it means there is excessive resistance somewhere in the circuit causing a voltage drop in the wiring circuit. Check all the wiring connections (use electronics cleaner to clean connections), and make sure the terminal connectors on the ends of the wires are clean and tight.

A negative side ground circuit test is made by touching one voltmeter test lead to the alternator housing, and the other test lead to the negative battery post (not the terminal clamp) with the engine running and charging system loaded. If good, the voltage drop should be 0.2 volts or less. If higher, inspect and clean all ground connections as needed. Also, check for broken, loose or missing ground straps between the engine and body.

If the alternator output circuit and ground circuits test good (voltage drop less than 0.2 volts) and the vehicle has a history of repeated alternator failures due to burned out diodes, check for a shorted indicator light terminal.

Checking for voltage drops in a circuit is a good way to find hidden problems that may be causing a charging problem. Voltage drop tests must be done while the engine is idling with a charging load on the system. In other words, there must be voltage flowing through the circuit for the voltage drop test to detect a problem. Voltage always follows the path of least resistance, so if the connection being tested has too much resistance some of the voltage will flow through the voltmeter and create a small voltage reading.

 

or if that is too much for you, just take it to autozone, they will hook it up for free