VIDA Model

[DaddyNiko]

I'm sorry if this has been posted/answered before but I could not find an answer when I did an inquiry.

I recently purchased a 1998 S70 GLT sedan (2.4L turbo) and have begun the apparently normal process of routine repairs. I've already replace the plugs/wires/cap/rotor, front struts, control arms, stabilizer bar connectors, tie rod ends, tie rod ends, and upper engine torque stabilizer mount. Next on my list is to repair/replace the ABS module (cold solder joints) and eliminate a rather irritating and not so little shudder the engine produces whenever it is started cold (TPS? MAF sensor? Fuel Injectors?).

I understand that a diagnostic scan tool is virtual requirement if you're like me and don't wish to go broke lining the pockets of some overpriced dealership, but still need to make repairs past a bad starter or alternator. I've also come to understand that the '98 model computer is slightly different than the '99-'00 units and requires a scan tool capable of reading that years codes, so I'm unsure which model I should buy. I'm currently looking at the Volvo Dice 2014D OBD2 EOBD Fault Code Reader by iCarsoft, but thought I'd check here for any thoughts or recommendations on this (or other) readers? Thanks in advance.

[erikv11]

That won't work for your 98.

Your best bet is VOL-FCR on an old PC laptop; your second best bet is a standalone, quality OBD II code reader. There are also some pretty good apps you can use with your phone but I am not up on those.

[jtp]

Not to hijack but this is related and I’ve been having similar questions but for my 99 as far as the different capabilities of data reading for 98-00 70 series P80s (the bastards).

My impressions from what I’ve read so far:

98: Consensus seems to be the cars don’t offer enough data input so Volvo specific tools don’t justify their cost versus a solid generic OBD II tool with run of the mill live data readings.

HOWEVER with the shuddering on cold starts issue OP mentioned, some record of engine data when any misfires were logged (looking for low RPMs and low fluid temps) or knowing that no such misfires occurred would be helpful. I bet the tools Erik mentioned do that, I’ve seen similar readings on mid-range generic scan tools too though from 95-98 P80s.

99: The Dice reader and corresponding software become a lot more useful as you start to get a lot more data output from the vehicle. But not as much data as later models so people seem to think a specific Volvo data reading solution is not totally essential.

2000: Everything important from a diagnostic perspective shifted to being able to access Volvo-specific codes and the many data points available via a Dice setup. Basically from 2000 on you have to have these tools if you want to diagnose your own car.

I could be wrong here, would appreciate some feedback/correction. Like I said- just started having similar questions as DaddyNiko so I’ve only been just learning about this.


Per shudder at startup: When I buy an old Volvo I like to Seafoam the intake through a vac line anyway because it makes a lot of smoke and I tell myself the car runs better afterwards
You can get random misfires on cold starts from carbon and gunk on intake valves so if you’re not adverse to running solvents through a 20 year old engine (does have its risks) that might be a cheap and easy thing to throw at the problem prior to any hardcore diag.