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Car Forum / Toyota / Camry / July 2006RANDOM no spark / start 1993 Toyota Camry 2.2
My 1993 Toyota Camry 2.2L has an intermittent, no spark / start problem. Sometime it starts and runs with no problem, other times it will crank with no spark at all. I've seen more than once when I use a spark tool to "see" if there's spark, it will change from no spark to full and the car will start right up. I've tried wiggling wires, bench tested all components by the manual etc. etc. I even stopped by the Toyota dealer for some insight and they agreed that the car must stay "broken" long enough to diagnose. Just a few minutes ago, I pushed it into the garage, put it on the lift and it started right up. I have replaced the distributor/coil assembly (new unit), ignitor, ECM, charcoal canister and spark plugs to no avail. ANY ideas would be greatly appreciated. > My 1993 Toyota Camry 2.2L has an intermittent, no spark / start problem. > Sometime it starts and runs with no problem, other times it will crank with > no spark at all. > I have replaced the distributor/coil assembly (new unit), ignitor, ECM, > charcoal canister and spark plugs to no avail. > > ANY ideas would be greatly appreciated. I've seen similar problems if an engine ground strap, or other grounding connection in the circuits, is faulty. Have you checked that the strap(s) are okay, and the contact points clean? The ground at the transaxle/engine was a little "iffy" and it's spotless now. I does start up now and I'll keep checking it... *Thanks >> My 1993 Toyota Camry 2.2L has an intermittent, no spark / start problem. >> Sometime it starts and runs with no problem, other times it will crank [quoted text clipped - 15 lines] > ----= East and West-Coast Server Farms - Total Privacy via Encryption > =---- Did you replace plug wires, do all plug wires show no spark. Is this the reason you replaced the coil? I didn't replace the plug wires as they are either all firing or non firing. > Did you replace plug wires, do all plug wires show no spark. Is this the > reason you replaced the coil? > I didn't replace the plug wires as they are either all firing or non firing. ============== Not necessarily true. They could be only supplying marginal or intermittent or weak spark. So far so good Larry - I think your ground suggestion nailed it. > The ground at the transaxle/engine was a little "iffy" and it's spotless > now. I does start up now and I'll keep checking it... [quoted text clipped - 20 lines] >> ----= East and West-Coast Server Farms - Total Privacy via Encryption >> =---- > So far so good Larry - I think your ground suggestion nailed it. =============== So where did you find the questionable ground? Battery? Frame? There's two grounds that leave the battery. One runs to the body (and was OK). The one that grounds the engine is on the transmission. It was the questionable one and the car is still running fine. >> So far so good Larry - I think your ground suggestion nailed it. > =============== > So where did you find the questionable ground? > Battery? > Frame? Nuts. It happened again this morning after 3-4 days of working great. Stopped about an hour and the car cranks but won't start. On about the 5th try, it starts right up and drives away, no problem at all. Again, I'd appreciate any suggestions on items that I can check out to diagnose this random, no starting condition. > So far so good Larry - I think your ground suggestion nailed it. > [quoted text clipped - 22 lines] >>> ----= East and West-Coast Server Farms - Total Privacy via Encryption >>> =---- > Nuts. It happened again this morning after 3-4 days of working great. > [quoted text clipped - 3 lines] > Again, I'd appreciate any suggestions on items that I can check out to > diagnose this random, no starting condition. Nuts indeed! Thought it was fixed. Do you have a voltmeter to confirm whether or not power is being supplied to the ignition? If 12V is indeed always available, then it's the ignition system itself that's at fault. A CD of the repair manual, with wiring diagrams, is likely available on eBay... Larry Van Wormer Yes, 12v is available to the system. When the car won't start, I've also noticed that the gas tank appears to be under a significant amount of vacuum. When you release the gas cap, there's a distinct "whoosh" as air rushes in. After doing this, the car restarts and you can drive away. It happened like this twice today (a very warm day) in San Diego. I expect that this might be as meaningful as sprinkling holy water on the hood but it does seem to have an impact. Does anyone in the group know of a fuel system switch that would shut off the ECM or spark? >> Nuts. It happened again this morning after 3-4 days of working great. >> [quoted text clipped - 21 lines] > ----= East and West-Coast Server Farms - Total Privacy via Encryption > =---- Try Igition Coil Yeah, I replaced that with the new distributor assembly. Thanks though. > Try Igition Coil Well the problem is still there and I could use any help that the group could provide. It seems now that the fuel tank thing was a red herring and had nothing to do with the actual problem. The canister, purge, lines etc. have all been checked and they're working fine. To be safe, I put on a new Toyota gas cap as well. I've tried the "wiggle test" on the wires and harnesses when it wouldn't / would start and that seems to have no affect. The spark / no spark will be at random and affects all cylinders. There seems to be no pattern in the condition so I'm definitely guessing here. Any new ideas out there? > Nuts. It happened again this morning after 3-4 days of working great. > [quoted text clipped - 30 lines] >>>> ----= East and West-Coast Server Farms - Total Privacy via Encryption >>>> =---- > Any new ideas out there? ============================ See Toyota factory service manual here: http://www.turboninjas.com/camry/ Go to the "ignition" section, and follow the flow chart for trouble shooting to isolate the problem area. All, I have enjoyed reading the troubleshooting tips here and wanted to share how I fixed my problem. I have noticed a lot of information on problems but not a lot of "how did you fix it". I too have a 1993 Toyota Camry that would not start. I purchased a "clicker fixer" kit off ebay. This kit is the contact points for the starter solenoid. I would turn the key and I would only get a clicking sound. After 20-30 turns the Camry would start. I removed the starter and replaced the plunger and contact points in the starter. I had to move some of the ignition wires to remove/replace the starter. After I reinstalled the starter, the starter would start fine but the car would not run. I towed the car to the shop where they discovered corrosion on the pins to the wire that goes to the top of the distributor. The car ran fine for two days. I went outside in the morning and the car started. I turned on the a/c and the car quit. I checked the distributor wires and could find no problems. I replaced all four spark plug wires, the rotor, and the distributor cap. Still no love!!! I asked the mechanic at my local shop what would he do next? He stated pull the distributor and inspect it. I read the ignition troubleshooting tips in the shop manual and decided to get the multimeter out before pulling the distributor. I started on the right side of the car at the igniter. I pulled both connectors off the igniter and I noticed on the larger connector the middle pin had green stuff on it. I cleaned it with a sharp thin knife, tooth pick, and a razor blade. I replaced both connectors on the igniter and tried to start the car. The car started!!!!!! I again tried to clean the pin better and then put dielectric grease on all the pins. The car seems to be running like a champ! On a side note: A year ago I took the BOSCH challenge. I installed new BOSCH platinum spark plugs in my Camry. The challenge was if you purchase a set of BOSCH platinum spark plugs and you aren't happy you can bring them back for a full refund. I did nothing to my Camry other than change the spark plugs. I usually would get 365 miles to a tank of gas. After the change in plugs only, I now get 455 miles to a tank. The plugs paid for themselves in just two tanks of gas. I'm not trying to sell spark plugs and I don't work for BOSCH, but I wanted to share my experiences with the group. Thanks, Andrew > > Any new ideas out there? > ============================ [quoted text clipped - 4 lines] > Go to the "ignition" section, and follow the flow chart for trouble > shooting to isolate the problem area. Did you use toyota parts, is this the reason you replaced the coil, coils are known camry issues and aftermarket electronics have a high defect rate. Yes, I used Toyota parts. > Did you use toyota parts, is this the reason you replaced the coil, > coils are known camry issues and aftermarket electronics have a high > defect rate. |
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