Technical

P0171/P0174 Help!
'97 Chev K3500 7.4L Been chasing after the source of intermittent P0171/P0174 (always both set) for some time without success. I'm running out of ideas on what to check now, I don't have a full feature scan tool so I can't perform all the possible checks. Some of the possible items seem to not be applicable du... 20 Jul 2008 16:35

Battery group size codes?
Just curious as to what the letters in a battery group size code means. For example, for my van I see the following size: - 75 - 75DT - 75DTO The van uses side terminals. I assume that DT = both posts and side terminals, but what does DTO signify? ... 11 Jul 2008 19:14

1996 Subaru Legacy starting problem
I have a 96 Subaru Legacy. Occasionally, when starting, I turn the key, the dash warning lights come on (lamp check function, I guess) but the starter doesn't turn. Then, if I press in on the key or push up on it while turning, the starter cranks just fine and the car starts. I'm thinking the ignition switch ... 13 Jul 2008 00:50

Repair Manual For 1994 GMC Sierra 1500
I have the Haynes manual. Don't like it. The truck has a V6. Any suggestions? ... 15 Jul 2008 02:04

Mercon 5 = Honda ATF Z1 ?
Hello I have a 2004 Honda Civic and would like to change the ATF fluid. The owners manual lists Honda ATF Z1, so I guess I need to go to the dealer? I was at Walmart today and I saw Mercon V ATF and on the bottle it mentioned that it meets Honda Z1 Is this ok? Or do I need to use the Honda fluid? Is t... 5 Jul 2008 09:28

Survey: Dealer's Badges
I'm trying to get an idea of how common a practice it is for auto dealers to affix permanent badges or plaques to the vehicles that they sell. Where I live (Washington State) the practice is rare. More like nonexistent. License plate trim rings with dealer's names and adverts are common. But nothing one can't re... 22 Jun 2008 18:21

Remote start not responding after battery change
I've installed a new battery in my '93 Mazda 626. Car starts up great now. For some reason, my remote door locks/starter is no longer functioning. When I "flash" the hood pin the parking lights blink normally. When I press Start or Lock/Unlock nothing happens at all - no click, etc. I've tried the programming ... 1 Feb 2008 01:13

Subaru thermostat operation
I have been frustrated by the number of cases of overheating in subaru legacy and outbacks that relate to thermostat malfunction. In a lot of cases the thermostat will test ok and there does not seem to be trapped air or any faulty components . I had the same issues and found an answer. The subaru thermostat open... 14 Jan 2008 03:53

P0420 code from check engine light 2000 Mazda Protege?
Got this code and it says something abt catalytic converter system. God I hope not cause that's expensive to replace? Do cat system even wear out? Car has 140k on it and was bought new. ... 20 Jan 2008 10:48

10% Ethanol in Gas
I hear a lot of people up in arms about the addition of Ethanol to gasoline. Many places do it just in the wintertime, others do it year round. One of the gas stations in my little town even has a bunch of "100% REAL GAS - NO ETHANOL" signs up all over the place. With all the whining and crying about "people pu... 5 Jan 2008 13:26