If I press the clutch immediately as soon as the Battery sign shows, the battery sign goes off and the car continues to run.
Two different garages have examined the car. It shows a map sensor malfunction trouble code and shows voltage fluctuation from the Alternator. The Alternator Switch(Cut Out) was replaced and the Battery now shows good condition. One garage insists on replacing the Alternator and says replacing map sensor is not required. The Other garage says that I need to replace the map sensor and not the alternator. Please advise.
2007-02-18 18:26:30 · 6 answers · asked by kadamd1 1 in Cars & Transportation ➔ Maintenance & Repairs
I have shown to the third mechanic, these are his observations:
1. The wiring / fuses seem to be okay.
2. He has done Alternator Overhauling once more.
3. He tested with a new Map Sensor and then too the car stalled.
4. He tested further by replacing the ISI Motor along with the Map Sensor and he claims that it does not stall any more.
Please give me feedback whether I should change the ISI motor along with the Map Sensor.
2007-02-22 05:03:54 · update #1
Sounds kind of tough to make a good call with the information provided.
How ever price wise the Map will be much cheaper to have replaced (faster/easier). I don't even need any tools to do mine in my Chevy.
Map sensor problems can effect engine performance, like gas mil age has been bad, runs better/worse in different weather conditions, can causes misses.
It could cause your Batt light to come on as your engine was conking out.
A bad alternator will not keep the battery charged, dim headlights, slow blinkers. It will stall when the battery gets low enough also poor mpg due to low spark and could cause misfires effecting Map vacuum and setting the code prior to stalling. Places like Autozone will check your alternator output for free and sometimes they will check your Map sensor for free.
If your battery is staying charged now that you have replaced the Alt switch and it is still conking out then I would defiantly lean towards the Map sensor.
2007-02-18 19:06:18 · answer #1 · answered by Red 5 · 0⤊ 0⤋
I had same issues with a pickup I once had. A friend told me how to rule out the alternator as a problem. With the car running take off the positive cable on the battery, if the car continues to run the alternator is fine, if car dies the alternator is bad. Simple and effective way to rule out a bad alternator......
Also if you can take the alternator off, many automotive shops will test the alternator for free!
Either way, I hope this helps, good luck.
2007-02-18 18:41:33 · answer #2 · answered by Vincent 6 · 1⤊ 0⤋
Either get a third opinion or go with the cheapest 'map sensor' because if it doesn't cure the problem you shouldn't have to pay for it. Put it on a credit card so you can dispute if its not fixed.
2007-02-18 18:36:07 · answer #3 · answered by Anonymous · 0⤊ 0⤋
ok heres the basics for you,where you see the belt that goes around on a wheel on your alti, too produce elec it spins a shaft. now on that shaft are points ceramic point which gives you voltage (electricity) for your car,these points do were down,how too fix,replace your alt.not the sensor.
2007-02-18 18:33:47 · answer #4 · answered by catart1956 5 · 0⤊ 0⤋
You probably have an alternator problem. Is your car idling high enough ?? A low idle could yield what you say. Is it idling lower than it used to ??
2007-02-18 18:36:15 · answer #5 · answered by Anonymous · 0⤊ 0⤋
the one guy that said take of the positive post is right, except, your supposed to take off the negative post, if you take off the negative post and the car dies, your altenator is the problem, if you ask me your altenator is the problem anyways, and there cheap and easy to fix, definetely a easy do it yourself project
2007-02-18 18:52:41 · answer #6 · answered by Dustin A 2 · 0⤊ 0⤋