1999 Volvo S70: adaptive cruise control problems

Filed Sep 15, 2009 · Acceleration, Transmission · 91,500 miles · NJ

My 1999 s70 with approximately 92,000 has the following issues: - sometimes the engines start shaking? - hard to brake - no power even if you pedal is at the max - cruise control stop working my car has a malfunction with the electronic throttle module and I have been to the deal to get the software upgrade. Since the upgrade my check engine light came on and have had to replace my front 02 sensor. Now the car is undriveable because it will not go more than 20mph with the gas pedal floored. Volvo will not repair this know issue because the car is 10 1/2 years old. They state if the car was less than 10years old or under 200k in mileage they would repair it. This is not fair. They could have replaced this etm when I came for the software upgrade but they did not.

Filed Oct 20, 2005 · Acceleration · 70,000 miles · CA

Dt: the throttle will flutter and the accelerator will cut out when pressing the accelerator pedal as well as vibrate. The vehicle stalled/died and lost power. The problem was fixed in february 2004, but it recurred. *ak *mr when the cruise control fails the odometer fails as well. The ABS and brake light illuminated as well.

Filed Sep 22, 2005 · Electrical, Fuel system · 22,600 miles · NC

Regarding volvo throttle control july 2001-purchased 1999 s70 with 22,600 miles; cruise control quit, warning lights lit, car began decelerating. Dealership said check gas cap securely-fitting. After restarting, cruise control worked and warning lights off. 30,000 mile service- told again to check gas cap whenever cruise problem occurred. August 2002-using cruise control, acceleration without reason. Immediately, cruise control quit, car decelerated, warning lights on. Normal function with manual acceleration. By this time, I had "learned" to restart car to get warning lights to turn off or to get cruise control to start working. At destination, car wouldn't restart. Tow truck driver jump-started battery. Ets warning light still on. Wrote to dealership october 28, 2003, regarding ets warning light. At 37,500 mile check-up, I was told car required only normal servicing. When I left dealership, ets light no longer on. Later car began idling roughly and didn't accelerate as smoothly. After 37,500 mile service, car operated more as expected. Within weeks, again idling roughly and not accelerating properly after turning corners. Dec. 31, 2003 (38,695 miles), volvo towed to dealership because unsafe to drive. When turning, car barely moved forward. Also, motor stalling out during acceleration after turning. Noise sounded like it emanated from power steering. Power steering rack replaced. After servicing, engine's acceleration better for few months. (did dealership cleaned throttle during service?) rest of this sent in separate description due to space limitations.

Filed Sep 22, 2005 · Electrical · 22,600 miles · NC

This is the second submission (part two, actually) of complaint # 10137311, regarding volvo throttle control module and cruise control. I had to divide the description into two sections due to space limitations. Part two of odi # 10137311: may 2004 (45,000 mile service) -car idling roughly, not accelerating smoothly, and clunking sound when accelerating. Upper engine torque mount. Clunking noise disappeared. Car seemed to accelerate more normally after servicing. Summer 2004- car cutting off when accelerating after turning and warning light(s) on. Cruise control continues cutting off, causing deceleration; car continues to idle roughly and accelerate un-smoothly. When it is time for engine to automatically be given a little more gas (such as going up a hill), the cruise control shuts off and the "ABS" light comes on. Sometimes "check engine" light comes on, either alone or in addition to the ABS warning light. September 20, 2005--warranty expired--67,500 mile service- again reported cruise control/warning light problem to dealership,supposedly need new control module, costing $1,000. Problem was reported repeatedly while car under warranty; don't repair at my expense because problem developed while under warranty. Using cell phone while conversing with dealership. Woman in same store overheard conversation, told me of similar problems with sudden deceleration, and gave me your url. [xxx]. Vin [xxx] (1999 s70) throttle control not yet replaced. *jb updated 07/18/2012 *js information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6)

Filed Aug 19, 2005 · Acceleration · 88,220 miles · PA

1) I was driving alone along state highway 283 in pa, which is a 4 lane (2 each direction) highway in a rural area with a posted speed limit of 65, between lancaster and harrisburg. Most traffic was trucks (tracter trailers). 2) the car (volvo s70 awd), travelling smoothly on cruise control at about the speed limit, suddenly lost power. Engine was still running, but at a much lower RPM, and running badly. Fortunately I was in the far right lane. I pulled off the road almost immediately to avoid being hit by the truck behind me. I noticed the ets yellow warning light was on. The vehicle seemed able to operate, albeit roughly, at about 30-35mph. Being in a rural area, I drove in this off the highway lane up to the next exit. I took the ramp off the highway, got to the top of the ramp, and the car seemed to be reasonable. Being in a rural area with nowhere seen for reparirs, I accelerated down the ramp to the highway, with the car seeming a bit sluggish, but otherwise ok. Then it lost power again at the bottom of the exit ramp. I pulled over, to the sound of the horn of another truck which was behind me. I shut off the car; waited a few seconds; and restarted the car. It ran much better, but the ets light was still on. After pulling back onto the highway, everything was ok for awhile, but I ran into problems when I hit some slowing traffic. When I tried to accelerate from the slowdown the car did not respond. It was as if I hadn't just pressed the pedal. I nursed it to a volvo dealership as soon as possible that day. 3) the throttle body was replaced after dealership first performed a diagnostic on the engine. The diagnostic showed 5 line items for the "throttle unit, internal fault..." I have a copy of the print out of this report. I have driven the car about 150 highway miles since the repar. The problem has not been observed during this time.

Filed Aug 9, 2005 · Acceleration · 80,968 miles · IN

On vacation in october of 2004,our 1999 volvo s70 started to experience sudden loss of speed and then resume at highway speeds, with or without cruise control engaged. We took it to a volvo dealer and had to have the electronic throttle module replaced. As a result of your investigation number pe05041 I wanted to record my problem with you as well.

Filed Aug 4, 2005 · Fuel system · 122,000 miles · MS

I own a 1999 volvo s70 front wheel drive. The electronic throttle control system (ets) has failed, and I understand that this is a huge problem that volvo does know about. They do nothing about it because of the high repair bill ( $800.00 - $900.00). I am a member of a volvo website, and many, many others on the site know of the problem. The ets fails on the vehicle, and the driver is left unable to control the vehicles speed, and sometimes direction ( if the car quits) when mine failed, I was on the interstate with my cruise control on about 72 MPH. I almost completely lost control of the car, was unable to stop the car effectively, and also unable to steer the car easily because the engine went dead. I wish someone would look into this problem, because it is a very dangerous problem. It is about the same as a throttle cable breaking while driving, and the car just going dead. Volvo knows about the problem, but refuses to issue a recall for the ets. This is a safety issue. It needs to be recalled.