98 s70 no start intermittently.MVSOLVED, dirty IAC

AVIP · Post by **AVIP** » 03 May 2014, 12:13

Just recently my car has started doing weird things.

It will crank but stall. And wont turn over. I had to push the gas pedal to get it started. Its about 90 out. Once on I had to turn the lock cyl back a little to get turn signals. Battery is good. Plugs rotor cap coil all new. Possible ign switch issue?

thedancingfiddle · Post by **thedancingfiddle** » 03 May 2014, 13:45

That would be my guess....

Post by **dosbricks** » 03 May 2014, 14:21

The turn signal issue makes it sound like the ignition, so a good place to begin. If you feel confident that's the problem, it will only involve the electrical side (accessed from below) and doesn't require removal of the key side--a pretty easy fix.

If that isn't it, the starters do fail on these cars, albeit rarely. Plus there is always the battery cable corrosion issue to contend with. Not trying to discourage, just throwing out some possibles.

AVIP · Post by **AVIP** » 04 May 2014, 20:29

So I went to get gas today and drove 3 minutes. Afterwards got in and it wouldnt turn over. It would eventually crank and stall. I had to nail my foot ob the throttle and turn the key to start it. Is my starter failing? My battery should be good. I just had it tested. 79 percent charge and its a good battery about a week or so ago

Post by **dosbricks** » 04 May 2014, 20:52

How many miles on this car? First check for corrosion inside the +battery cable where it enters the +terminal clamp because a cable is cheaper than a rebuilt starter. The starter on my 850 died an agonizing death over the period of about a year beginning with an occasional hiccup--I threw a lot of money at the problem before, thanks to MVS, I got to the root cause. The wife's S70 starter died over the period of about a week. Also, put the battery on a charger and get a full charge on it and see if the extra juice will kick that solenoid.

dos

AVIP · Post by **AVIP** » 04 May 2014, 22:06

190,878 miles
I am all over this car lol. I clean my battery terminals every month. They are on pretty tight. Will check grounds tomorrow morning to make sure its good and will have autozone check my battery alt and starter. Just made me concerned because it required throttle to start. Is that a starter symptom?

AVIP · Post by **AVIP** » 05 May 2014, 02:02

Did a little reading. Think I can rule out my fuel pump because by needing the pedal to start im only taking in more air. Only started once I got this new stp air filter. Will look at all air intake parts and fuel shrader valve. Hopefully not something expensive!

Post by **abscate** » 05 May 2014, 04:58

It's relatively quick and free to clean your Idle Air Control Valve, IAC, on this car.

The fact that you need pedal to start makes me think this is acting up. The gas pedal has nothing to do with the starter circuit, of course.

AVIP · Post by **AVIP** » 05 May 2014, 10:33

Whats best to clean the iac with?

Post by **mikealder** » 05 May 2014, 10:50

Carb Cleaner and a few rags should sort it out - Mike