engine stall on Highway
#1
Join Date: Jan 2018
Location: on the road in NE Oklahoma
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engine stall on Highway
2002 XKR with 130,000 miles:
after about a 4 hour fabulous drive, coming down a long decent the engine died.
Followed by a rapid beep beep beep. No warning messages on the dash. Still had full brakes and steering.
Engine coolant temperature was normal @ 197 F & oil temperature was the 215 F (highway normal oil temp seems to be 210 - 219). fuel tank was about half full
Pulling over to the shoulder I shifted into neutral and the car instantly restarted. It would not engage drive gear until I'd slowed to under 10 mph. Once drive was engaged, the car accelerated smoothly and normally to my usual highway speed of 80 mph. Drove the final 20 miles into town without incident as if nothing had happened.
checked with code reader for stored codes, none found. Fuel trim readings were in the normal range. No loose plugs under the hood.
any ideas ? I did a forum search but came up blank
thanks,
Z.
PS Battery is new-ish ( 10 months old) and charging system seems to be fine, always showing 13-7 to 14.2v. Battery Tender + in use when car sits overnight or longer.
after about a 4 hour fabulous drive, coming down a long decent the engine died.
Followed by a rapid beep beep beep. No warning messages on the dash. Still had full brakes and steering.
Engine coolant temperature was normal @ 197 F & oil temperature was the 215 F (highway normal oil temp seems to be 210 - 219). fuel tank was about half full
Pulling over to the shoulder I shifted into neutral and the car instantly restarted. It would not engage drive gear until I'd slowed to under 10 mph. Once drive was engaged, the car accelerated smoothly and normally to my usual highway speed of 80 mph. Drove the final 20 miles into town without incident as if nothing had happened.
checked with code reader for stored codes, none found. Fuel trim readings were in the normal range. No loose plugs under the hood.
any ideas ? I did a forum search but came up blank
thanks,
Z.
PS Battery is new-ish ( 10 months old) and charging system seems to be fine, always showing 13-7 to 14.2v. Battery Tender + in use when car sits overnight or longer.
Last edited by zray; 11-24-2018 at 06:01 PM.
#2
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zray (11-24-2018)
#3
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zray (11-24-2018)
#4
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Install your OBDII reader and drive the car it should capture any temporary code that comes in.
Gus
JagRepair.com - Jaguar Repair Information Resource
Gus
JagRepair.com - Jaguar Repair Information Resource
( https://www.jaguarforums.com/forum/x...-gauge-210411/ )
....which doe read codes, was plugged in at the time, but recorded nothing. Tried checking with the icarsoft LR-1 when I got home. but no hits. Tomorrow I'll give it another try on the go.
no idea. will report back on that...
thanks for the suggestions.
Z
#5
this sounds a lot like an intermittent failure of the ignition switch or its anti-theft module. when these switches get worn and erratic they can be set off by other items dangling from the key or by being bumped by the driver's knee. the way to check it is to open the lower column cover and with the vehicle running apply some rotational pressure to the switch. in some cars this shows the problem. if it is the anti-theft signal ring, it might be as simple as a poor connection.
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zray (11-24-2018)
#6
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#8
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Cor reminded me. While reading your description reminded me (flashback) of hitting my key in ignition with my knee, causing a stall. Trying to start her in neutral while rolling caused error message (s?) To display. Restart from stop = all ok.
I hope yours is that simple.
John
I hope yours is that simple.
John
From that point on, the car acted normally.
Z
tomorrow I'll pull the lower steering column cover and take a look at the ign switch and assorted wiring.
#10
yes, when that ridge of carbon forms just where the throttle blade meets the throat the engine starves for air while coasting and just shuts down the fuel which it will do anyway under no throttle input. the problem is that once coasting slowly enough or stopped where the engine is not being spun by the transmission, it cannot turn on the fuel due to not enough air reading at the 02 sensor.
Last edited by CorStevens; 11-25-2018 at 01:28 PM.
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zray (11-26-2018)
#11
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yes, when that ridge of carbon forms just where the throttle blade meets the throat the engine starves for air while coasting and just shuts down the fuel which it will do anyway under no throttle input. the problem is that once coasting slowly enough or stopped where the engine is not being spun by the transmission, it cannot turn on the fuel due to not enough air reading at the 02 sensor.
I don't have any receipts from previous owners showing the O2 sensors were ever changed. FWIW, Fuel trims appear normal to me.
Z
#12
i cleaned the throttle body about 3,000 miles ago (2 months) and replaced the air filter at the same time. Did a hard reset at the same time. I wouldn't mind replacing the MAF sensor if I could get a consensus referral of a reasonable priced replacement that is known to work in a 2002 XKR. Would that be the same as the XK8 version ? Maybe those are ?'s for a new topic.
I don't have any receipts from previous owners showing the O2 sensors were ever changed. FWIW, Fuel trims appear normal to me.
Z
#13
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affirmative on the O2's, just mentioned them in passing .
When I cleaned the throttle body 3,000 miles / 2 months ago, I also cleaned the mass air sensor as best I could with the CRC brand spray made to clean those. It's my uunderstanding that, the heated wire is not to be touched, is that correct ???
This ''02 XKR is my first modern car. Prior to its purchase in January 2018 I had only owned 1960's & 1970's era cars.
So fuel injection, electronics, etc is all new to me despite being a mechanic off and on (1969.to '79 and again 2009 to 2012) . I am well versed on modern Ducati's, but that's about it. I primarily have consentrated on classic car and motorcycle restorations.
But I couldn't be happier with the car, it's the best looking car since my e types 45 years ago. And goes fast enough for my 67 year old reflexes.
Z
Last edited by zray; 11-25-2018 at 09:42 PM.
#14
This page has a fairly generic pic of V-engined "modern" (since about 1985) cars with OBD II:
OnBoardDiagnostics.com - Engine Basics
It may help to realise the PCM (powertrain control module) goes around a loop reading the sensors and tweaking the actuators many times a second. It can even see the little exhaust puffs as each cylinder fires and knows which puff is which cylinder, so can do all manner of adjustments and error detection.
OnBoardDiagnostics.com - Engine Basics
It may help to realise the PCM (powertrain control module) goes around a loop reading the sensors and tweaking the actuators many times a second. It can even see the little exhaust puffs as each cylinder fires and knows which puff is which cylinder, so can do all manner of adjustments and error detection.
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#15
right, the heated wires should not be touched, but definitely rinse them well with the cleaning spray. please note that the sensor wires are up in the top of the unit. some people see the little temperature ball lower down on the shaft and think that is the main part. also use the same cleaner for the exterior connections to the sensor.
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zray (11-26-2018)
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